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Re: Ham HT
by John Mock KD6PAG 26 Feb '07

26 Feb '07

At this point, unless one is going to use a separate radio for transmit and receive, the only new HT i can recommend is the Kenwood TH-D7A[G]. Right now, it's the only rig which can still operate in full-duplex. Full-duplex operation is essential in mode J-FM or you are likely to either cause QRM or waste valuable satellite transponder time. To test a radio for full duplex operation, make sure you bring headphones when you test a radio. Listen to a weather service station on one band (with headphones) and transmit briefly on 446.0 MHz (or other suitable UHF channel). If the weather service broadcast is uninterrupted while you transmit, then you have a radio suitable for mode J-FM. This should be helpful in evaluating a used HT. If you're going to use two radios, then the TH-F6A is a decent choice. I found it to be adequately sensitive if i gave it a good antenna, and with an unmodified downconverter, i used it as the receive side to work AO-40. With an antenna similar in gain to an Arrow satellite antenna, i've also heard FO-29, AO-7 and VO-52 well enough to work people given a suitable up-link radio. -- KD6PAG (Networking Old-Timer, Satellite QRPer)

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Can D-Star work on VO-52?
by Patrick Green 26 Feb '07

26 Feb '07

Hi All, I'm wondering if the GMSK modulation scheme in D-Star can be inverted and whether the Icom 91AD dualband HT can work full duplex for satellite work. D-Star uses a 6.25kc channel which is way better than the 15kc needed for standard FM but not as friendly as SSB and CW. Let me know. I haven't purchased this equipment but it's worth at least a debate. 73 de Pat --- KA9SCF.

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new satellite
by nader omer 26 Feb '07

26 Feb '07

hello all i found this link to a new satellite with amateur frequency http://www.bluesat.unsw.edu.au/?setMain=http://www.bluesat.unsw.edu.au/cont… any more information ? --------------------------------- Don't pick lemons. See all the new 2007 cars at Yahoo! Autos.

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EME signals ? with WSJT
by Joe Leikhim 25 Feb '07

25 Feb '07

Spacecraft telemetry?? Any recent launches? -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P

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AMSAT Journal
by Jeff Davis 25 Feb '07

25 Feb '07

I have been traveling for almost all of 2007 and just have not had time to catch up on the backlog of magazines and many other publications received. Last night I was able to kick back with a cup of coffee and the latest AMSAT Journal (Jan/Feb 2007) and just couldn't put it down until I had consumed every word. The topics covered seemed a good mix of technical and anecdotal account; the writing and editing work is excellent. As AMSAT-NA members, we are fortunate to have such talented people creating a publication that links us all together with the information required to take full advantage of those assets on orbit or under construction. AMSAT-BB can be an interesting place if you are willing to sift through the noise to find a little signal. On the other hand, the Journal is a clear source of concise information and for anyone who is either active or has an interest in satellite operation, it alone is worth the price of membership. How many messages do we see here every month asking the same questions over and over? Those questions are answered, and in detail in the Journal. One example, "Why Can't I Hear AO-51?" by Mark Spencer, WA8SME is a short but definitive treatise on the subject and it really gets to the heart of that same old question asked here many times and in many ways. You want opinions, toss your question out on the -BB and you'll get plenty. You want answers. join AMSAT and get the Journal. "Bravo" and "Kudos" to Ed Long, Bill Hook and all those whose hard work on the Journal is so obviously visible in the end product. Thanks, 73 -- Jeff Davis, KE9V AMSAT-NA | AMSAT-DL ke9v(a)mac.com

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FalconSat3
by Wayne Estes 25 Feb '07

25 Feb '07

I am VERY impressed with the description of FalconSat3 in the AMSAT News Service special bulletin ANS-056.07. With a frame that is roughly 24 inches on a side, it should get enough solar energy for powerful downlinks. Perhaps the downlink will be similar to UO-14. Has anybody heard an estimate of the time duration of the science mission? That is, how long might we have to wait for the amateur payload to be open to the public? Also encouraging is the final statement that FalconSats 4 and 5 will also have amateur payloads. This could return us to the "LEO glory days" when RS-10, RS-12, and UO-14 were all operational with strong downlinks. I wonder if they would consider a Mode A or Mode B linear transponder in one of the future FalconSats... The global shift to code-free HF licenses could result in renewed interest in Mode A. I've always felt that it makes the most sense for AMSAT-NA and AMSAT-DL to focus exclusively on HEO satellites and let universities and smaller AMSAT groups focus on LEO satellites. This is happening in a big way now, thanks to King Abdulaziz University (SaudiSats), US Naval Academy (PCsats), US Air Force Academy (FalconSats), AMSAT-VU (VO-52), and AMSAT-ZL (KiwiSat). Wayne Estes W9AE Oakland, Oregon, USA, CN83ik

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AO-51 tests planned 2-26 and 27
by Jim White 25 Feb '07

25 Feb '07

February 26 and possibly February 27 during the local AM passes over Colorado the AO-51 U band voice transmitter will be off and the S band will be on in digital mode at 38k4 and 78k4. These mode changes are to facilitate the testing of the US Air Force Academy satellite ground station in preparation for the launch of Falconsat-3. Falconsat-3 (FS-3) is another in the series of satellites built at the US Air Force Academy. It is presently scheduled to launch March 8 from Cape Canaveral on an Atlas-V (mission STP-01). USAFA Space Systems Research Center satellites are science oriented and university class. FS-3 carries two space weather plasma detection experiments along with a micro pulse plasma thruster attitude control experiment. The objectives of the program are to do real science and educate USAFA cadets about space systems design, construction, testing, and operations. About 40 senior cadets are in the program each year. Falconsats are operated from the ground station at USAFA near Colorado Springs, Colorado. Once in orbit FS-3’s mission is to collect data from its experiments and provide cadets in the Space Operations major an actual space ops experience. Additionally Astronautics major cadets will analyze telemetry and make operations decisions. FS-3 will perform its primary mission on DOD frequencies with a downlink at 2.220 GHz. Modulation is GMSK at 38k4 or 76k8 bps. All transmissions are in the clear and are AX.25. Additionally FS-3 carries an Amateur transmitter and receiver with a downlink at 435.100 Mhz. Modulation is GMSK at 9k6 with faster bit rates available. The Amateur uplink is in VHF and the frequency will be made available when FS-3 reverts to Amateur mode. After the primary science mission is completed the satellite will be transferred to the USAFA Amateur Radio Club and operated as an Amateur satellite. It can function much like AO-51 in either an FM voice or digital store and forward configurations. During the first few weeks on orbit FS-3 will be commissioned, which includes uploading software and testing all functions. During that time the Amateur payload will be exercised. The primary avionics in FS-3 are from SpaceQuest with additional modules built by cadets and faculty at USAFA and contractors. Software modules are from BekTek, SSTL, and Colorado Satellite Services, with additional software by cadets and faculty at USAFA. The satellite is ‘ESPA class’. The basic structure is a cube about 24” on a side. There is a 3 meter gravity gradient boom that will be extended from the ‘top’ on orbit. On the ‘bottom’ are the pulse plasma thrusters and various antennas including an array of S band patch antennas provided by S&L Technologies of Orlando along with omni antennas for S, V and U bands. The USAFA ground station consists of two complete units with individual masts on the roof of the classroom annex building. Antennas include 6’ and 10’ dishes and Yagis. Rotators are the heavy duty MT-3000 and MT-1000 from M2. The first USAFA satellite, Falcon Gold, went into GTO and measured the strength of GPS signals from well above the constellation. The results showed signal levels were adequate to warrant further experiments and in part lead to the GPS experiment on AO-40 and other satellites. Falconsat 4 and 5 are in the design stages now. Each is expected to carry an Amateur transmitter and receiver in addition to their primary payloads. After launch reception reports will be appreciated. Reports may be sent to: fs3reports(a)coloradosatellite.com Jim White css(a)coloradosatellite.com

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EME signals ? with WSJT
by Mineo Wakita 25 Feb '07

25 Feb '07

EME signals ? 144.104 MHz JT65B mode Feb 25, 21:53 JST, 2007 Feb 25, 12:53 UTC, 2007 http://www.ne.jp/asahi/hamradio/je9pel/70225eme.mp3 (199kB) http://www.ne.jp/asahi/hamradio/je9pel/70225eme.wav (877kB) Equipment ZQ-81 (LAMBDA): 144 Cubical Quad, 8ele x 1, 13.0dBd GPA-2020 (ANTEN): 144 PreAmp, RFgain 20dB 8D-FB (Fujikura): 12m WSJT 5.9.6 http://pulsar.princeton.edu/~joe/K1JT/ http://www.vhfdx.de/wsjt/ JARL http://www.jarl.or.jp/Japanese/2_Joho/2-6_stations/sked.pdf --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: Feb 26, 2007 ---------------------------------------------

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Re: AMSAT-BB Digest, Vol 2, Issue 135
by Gary McKelvie 25 Feb '07

25 Feb '07

Hi to John and the List, I'm certainly taking onboard what people are suggesting :) I think I also have said that I have a crossed 70 cm 19 element Yagi from before, as well as rotators to enable both azimuth and elevation control of the antennas so i'm starting to think even with the fixed polarization of the 9/19 element Tonna i will need to use the elevation rotator. Now to my next though If I have this right the LEO's use 70cm as the down link and the 2m side as the uplink, so to my way of thinking I need the most gain really on the down link side. So would it be better to have a small 2m Yagi crossed about 4-5 elements. The 847 output on 2 and 70 is variable 5 - 50 watts on both bands all modes. If I was to go this way I would also look at circular polarization on the antennas. I would also be looking at using a duplexer to enable me to use one feed line which again would make the XYL happier as where the antennas will have to go when up is across the back lawn. I understand that will impact on the performance of the system but I willing to accept that :) So the question is RHCP or LHCP? Which is best or do I need to be able to switch from one to another? As you can see I don't have a fixed idea on the station as yet. I find it easier to talk it through with people first then go get it up and running :) So thank you all for listening to me and the help as well. 73 Gary At 01:45 23/02/2007, John Kopala wrote : >The beams with their inherent gain will enable working satellites on more >passes and lower elevations. You may experience some fading with fixed >polarization, but the gain of the antennas may compensate for that. Some of >the satellites do require a little more power to get into, but your setup >should be more than adequate. Gary McKelvie G7USC Web : www.garym.org.uk Mobile : +447968501863 MSN Messenger : gm7usc(a)hotmail.com So Long and Thanks for all the Fish

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Next P-POD CubeSat launch scheduled for 27Mar07
by Ralph Wallio, W0RPK 25 Feb '07

25 Feb '07

Kosmotras has advised CalPoly CubeSat Management that their next DNEPR launch is scheduled for 27Mar07. Payloads will include CubeSats, EgyptSat and SaudiSats. The launch will include 3 CubeSat P-PODs with assignments as follows: P-POD A CalPoly PolySat CP4 (OSCAR) AeroSpace AeroCube-2 Boeing CSTB-1 P-POD B CalPoly PolySat CP3 (OSCAR) University of Louisiana CAPE-1 (OSCAR) Universidad Sergio Arboleda (Colombia) Libertad-1 (OSCAR) P-POD C Tethers Unlimited MAST (triple-cube) More information including OSCAR frequencies and modes will be updated at http://showcase.netins.net/web/wallio/CubeSat.htm. CalPoly's CubeSat web page is available via http://cubesat.atl.calpoly.edu/ (updates expected). TNX es 73 de Ralph Wallio, WØRPK W0RPK(a)netINS.net http://showcase.netins.net/web/wallio/ Hubbert's Peak - The Mother of all Perfect Storms

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status reports
by john heath 25 Feb '07

25 Feb '07

Hi, If you havn't yet found this site then its worth a look. http://oscar.dcarr.org/index.php You can see up to date reports on a whole range of Oscars and upload your own reception reports. If KD5QGR is monitoring this list I have a request please. Can you add Peheunsat-1 and Genesat-1 73 John G7HIA

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ISM question
by Dan Kuester 24 Feb '07

24 Feb '07

Hi all, I'm part of a team looking at building a cubesat using an MHX-2400 modem, the same 2.4GHz ISM-band modem used in the cube sat kit. We're building both a new Earth station and a satellite - both are using a matching pair of these modems. We've got the technical logistics worked out, but we've had some difficulty understanding how the regulations work. Unfortunately I'm not experienced enough yet to understand how FCC sections 15 and 25 interact with one another. Can anyone offer any advice on this? What kind of regulatory paperwork do will need to fill out, and with who? Cheers, Dan Kuester

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help with satpc32
by Nick Pugh 24 Feb '07

24 Feb '07

Hi All I am running satpc32 under xp ,1.3 ghz processor and a 512 meg of ram. When I have 2 or 3 other programs running in the back gourd I get error 105 on satps every 15 to 20 seconds. help thanks nick

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Re: new satellite
by GW1FKY＠aol.com 24 Feb '07

24 Feb '07

In a message dated 24/02/2007 03:04:52 GMT Standard Time, st2nh(a)yahoo.com writes: http://www.bluesat.unsw.edu.au/ Hi thanks for the information, Its nice to see another project which develops the skills for satellites and associated construction, engineering and electronics. Pleased also to see how they are marketing the awareness of amateur radio through the web pages and press reports. I wish them and others good luck in this respect -The project seems to be at a point of about in its construction (fully funded for that aspect) but have yet to raise the funding for the launch Regards Ken Eeaton GW!FKY Amsat

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RAFT and ANDE keps
by Sion Chow Q. C. (9W2QC) 24 Feb '07

24 Feb '07

Dear All, I would be glad if someone can advice me what are the latest catalogue numbers for RAFT, ANDE, FCAL and NMARS? It has been some time since I last worked the satellites, and would like to try out the packet to voice synthesizer onboard RAFT. I also note that for ANDE, it requires a command station to first activate it. Are there any command stations around south east Asia? Thanks a lot in advance. 73, Sion Chow Q. C., 9W2QC. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.18.3/694 - Release Date: 2/20/2007 1:44 PM

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TM-D700A
by Bruce 24 Feb '07

24 Feb '07

BB Just received my new Kenwood TM-D700A. I'am sure someone on the bb has mounted one in their 2005 F-150. Looking for pointers on to install, type antenna used, etc. 73 Bruce KG4YEV .

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Anybody need an ARR MMLXXXVDG schematic/manual?
by Alan P. Biddle 23 Feb '07

23 Feb '07

Hi, In cleaning out some old files, I came across the docs for the older ARR GasFet mast mounted preamps. It is good for the 50, 144, 220, and 440 MHz versions. Before I toss them, I wondered if by any chance anybody needs, or want one? I can scan as many as needed. Alan WA4SCA

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SatPC32 with Labjack U3
by Wayne Estes 23 Feb '07

23 Feb '07

There is a new driver for SatPC32 to support the new (cheaper) Labjack U3 USB rotor controller. For details about downloading and installing the driver, look at the bottom of DK1TB's "Downloads" page. www.dk1tb.de/downloadeng.htm NLSA no longer sells the "piggyback" PCB that interfaces a Labjack USB controller to a Yaesu az/el rotor. But Erich Eichmann DK1TB reports that it's easy to build the interface on a perfboard. At the bottom of the Downloads page are links to schematic drawings of Labjack U3 and U12 Yaesu rotor interfaces. And a link to a photo of his homebrew U3 interface. Wayne Estes W9AE Oakland, Oregon, USA, CN83ik

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2M1EUB/P IO86OK NE.SCOTLAND
by paul robinson 23 Feb '07

23 Feb '07

Hi sat friends, i will be active again from NE.SCOTLAND from 3/3/07 for 9 days on all sats! Should any one be interested in the square?.This will be my 3rd visit to this qth ,a large cottage in the middle of know where! plenty of land etc,but difficult to work the birds from as its surrounded by mountains! hence this time i will be trying out a much improved antena set up....and 50w on tap.I intend to visit this qth again another twice this year,and may be some islands off the coast of scotland next year! I will be qrv on day and evening passes (gmt) the locator is io860k ill be using the call 2M1EUB/P any one wishing to qsl ,is via my home call 2e1eub. AO7 will be the best bet for any one stateside wishing to work me,europe will be ok on any bird! Thanks again to anyone who does try and work me! ill be also qrv on hf and lf...73 de paul --------------------------------- New Yahoo! Mail is the ultimate force in competitive emailing. Find out more at the Yahoo! Mail Championships. Plus: play games and win prizes.

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ANDE-1 and File RAFT speak Sa Wad Dee Pa Ted Thai and Long Live the King
by Tanan Rangseeprom 23 Feb '07

23 Feb '07

Hello PA3GUO , 9W2QC and All HAM Could you please advice me step by step for command control to speak of ANDE. I will control RAFT and ANDE speak message of my send to command talk to satellites. Best Regards, Tanan Rangseeprom HS1JAN , XU7ADN - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This is meaasge on Hyper Terminal link to TNC2 PacComm TINY-2 MARK-2 Packet Controller (c) Copyright 1985-1994 PacComm Technical Support - (813) 875-6417 AX.25 Level 2 Version 2.0 Features: KISS PERSONAL MESSAGE SYSTEM CLOCK CHIP SUPPORT Expanded NMEA 183 (GPS) SUPPORT Release 3.2 April 15, 1994 cmd:c ande-1 *** ANDE-1 busy *** DISCONNECTED HS1JAN>APRS,ANDE-1*::TALK : Long Live Majesty the King Bhumibol Adulyadej King of Thailand. cmd:c ande-1 *** ANDE-1 busy *** DISCONNECTED cmd:c ande-1 *** ANDE-1 busy *** DISCONNECTED PacComm TINY-2 MARK-2 Packet Controller (c) Copyright 1985-1994 PacComm Technical Support - (813) 875-6417 AX.25 Level 2 Version 2.0 Features: KISS PERSONAL MESSAGE SYSTEM CLOCK CHIP SUPPORT Expanded NMEA 183 (GPS) SUPPORT Release 3.2 April 15, 1994 cmd:c raft *** retry count exceeded *** DISCONNECTED cmd:c raft *** CONNECTED to RAFT cmd:k :talk : Sa wad dee pa ted thai :talk : long live the king :talk : Long live the king bhumibol HS1A :Talk : CQ CQ DE HS1JAN *** retry count exceeded *** DISCONNECTED ____________________________________________________________________________________ Need a quick answer? Get one in minutes from people who know. Ask your question on www.Answers.yahoo.com

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SatPC32 with Windows Vista 32
by Wayne Estes 23 Feb '07

23 Feb '07

Please let me know if you have tested SatPC32 on the new Windows Vista 32 operating system. Especially with CAT and rotor control. Thanks! Wayne Estes W9AE Oakland, Oregon, USA, CN83ik

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RAFT synthesizer speaks!
by Mineo Wakita 23 Feb '07

23 Feb '07

Today, 12:26 UTC 23 Feb, RAFT speaks ! http://www.ne.jp/asahi/hamradio/je9pel/70223raf.wav (Voice: This is JE9PEL via RAFT.) --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: Feb 23, 2007 ---------------------------------------------

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Re : Ham HT
by TOFFY 23 Feb '07

23 Feb '07

>I am working on my Canadian HAM ticket and I am looking at starting off >with a HT. I am looking at the IC-T90, IC-T60 and the VX-7R. >I was wondering if anyone can point out any issues and/or benefits of >either. >Thanks.. >Dave... If your licence hold 220 Mhz. add TH-F6A to your list. TH-F6A can receive CW,SSB,AM from LF through 70cm.Band . I am not sure in 9600bps usage ,but have 9600 bps in MENU. Defect : not support full-duplex (sometime require in satellite communication) 73s de Toff HS0NNU ____________________________________________________________________________________ TV dinner still cooling? Check out "Tonight's Picks" on Yahoo! TV. http://tv.yahoo.com/

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Re: Advice on antennas for working the LEO's
by Gary McKelvie 23 Feb '07

23 Feb '07

Hi John and others, Thanks for the picture lovely set up. If only I could get the XYL to let me stick something similar on the roof :) I do have an elevation rotator already :) IIRC a Kenpro 550 or 450. I have played about in the past with satellites, at that time I had a 11 element 2 meter RHCP and a 19 element 70 RHCP (Hence the elevation rotator). I mainly listened rather than transmitted. So really I have all the equipment except for a way to automate the antenna control, which as you say isn't too difficult to do manually and an antenna. I really don't thing the XYL will let me put up the 11 and 19 element antennas which I still have, as she thinks I have enough antennas in the air already <g> As you can see the sats aren't a passing fad with me, it's just that I will be on LEO's as a way of compromise. It has taken me a while to get back to them, but i bought the 847 recently to motivate me to actually put my words into action rather than just wishing on a star :P Several people have suggested using a vertical antenna such as a colinear. I have actually already tried this and the results are very disappointing, which I put down to my location rather than anything else as where I am is not particularly that good certainly form a VHF/UHF point of view. Other things I was wondering about was the ERP at the satellite, would it be too high causing me to be an alligator? Roughly the ERP on 2 would be about 50 watts and higher on 70 as the gain would be about 13 dBd plus whatever 5 watts equals. losses should be very small as the run of coax would be less than 30 feet, most of that being Westflex 103 and just the a very short length of RG 213 for getting the antenna hooked up and round the rotator/s. I'm not sure how to work out the path loss from my location (is there a standard figure or equation to use?) so at present I'm still very tempted to go with the Tonna, as it certainly seems to be better than the arrow antennas in that it has a higher gain figure. Please note I am not commenting on the quality of the construction of the Arrow. The other aspect I'm wondering about is cross polarization losses, the way that I plan to have it configured is with the 2 meter section horizontal and the 70 cm vertical. So would that be significant for the LEO's? 73 Gary G7USC At 23:12 21/02/2007, you wrote: >The antenna by Tonna with 13 DBi on 2 and 16 DBi on 70 is going to have a >fairly narrow beamwidth and is obviously a fairly long antenna. It will >need to be pointed with reasonable accuracy. If you are 30 degrees off you >might as well be pointed the other way. With that much gain, you should be >able to work most satellites without the preamps. The problem is aiming the >antennas. I recommend using azimuth and elevation rotors. Azimuth alone >won't do it with narrow beamwidth antennas if the satellite pass reaches a >significant elevation. Gary McKelvie G7USC Web : www.garym.org.uk Mobile : +447968501863 MSN Messenger : gm7usc(a)hotmail.com So Long and Thanks for all the Fish

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Re: DE-xpedition
by melachri＠speakeasy.net 23 Feb '07

23 Feb '07

For those interested, my trip to Delaware this Saturday is still on schedule. And since AO-51 is back online, I plan to work all three satellites per the original schedule. 73, Steve W3HF ---Forwarded Message Follows----- I am planning a short trip to Delaware (a DE-xpedition, so to speak) to operate the FM satellites, and give others a chance to work this state. The trip is tentatively planned for 24 February 2007, during the local afternoon and early evening. My location is going to be close to 39.82N-75.55W, in the northwest corner of FM29. This is where I was for a previous DE-xpedition on PSK31. Equipment will be a Yaesu VX5R with a handheld Arrow dual-yagi and an MP3 recorder. Thanks to Patrick WD9EWK, I have some predictions of satellite passes from this location, and have selected the following: AO-27 2003z-2019z AO-27 2145z-2157z (dinner break) SO-50 2318z-2329z AO-51 2333z-2346z SO-50 0057z-0110z (UTC 25 Feb) AO-51 0111z-0125z (UTC 25 Feb) This schedule is subject to change, based on weather or other logistical issues. I hope this trip will be of interest to the satellite community. I do have two requests: 1. Since I will be operating half-duplex (due to radio limitations), I would appreciate it if anyone who is able to record these passes would email the recordings to me afterwards. 2. I'd also like to gauge interest in this trip, so if you are specifically interested in working me (for either the state or the grid), please let me know via direct email. Thanks. 73, Steve Melachrinos W3HF (@arrl.net)

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Ham HT
by David Bate 23 Feb '07

23 Feb '07

I am working on my Canadian HAM ticket and I am looking at starting off with a HT. I am looking at the IC-T90, IC-T60 and the VX-7R. I was wondering if anyone can point out any issues and/or benefits of either. Thanks.. Dave...

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IT time
by w7lrd＠comcast.net 22 Feb '07

22 Feb '07

Hello I'm running Insant Track on a P4 xp computer. The time is way wacked out, IT time goes way ahead the computer time. Any fixes? 73 Bob W7LRD Seattle

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AMSAT-BB
by Joe Leikhim 22 Feb '07

22 Feb '07

I think the Motto is: ITS ONLY A HOBBY! Message: 5 Date: Wed, 21 Feb 2007 22:04:07 -0500 From: "Mr Jeffrey Ross" <radiooperator(a)comcast.net> Subject: [amsat-bb] AMSAT-BB To: <AMSAT-BB(a)amsat.org> Message-ID: <003f01c7562e$1e118ee0$6401a8c0@hamshack> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original HI ALL, OK GREAT NOW BACK TO THE SATS I SEE GREAT, HI WHATS THE HAM MOTTO AGAIN? MAYBE THAT SHOULD BE POSTED HERE ONCE IN AWHILE. KC8GKF ------------------------------ -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P

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Re: Advice on antennas for working the LEO's
by Daniel Schultz 22 Feb '07

22 Feb '07

Try this address: http://www.ew.usna.edu/~bruninga/rotator1.html It was missing the last "L" on the end. Dan Schultz N8FGV ------------------------------------------------------------------- > I was unable to access Bob's rotator site. Is it just me? >http://web.usna.navy.mil/~bruninga/rotator1.htm >Use the EDU version instead: >http://www.ew.usna.edu/~bruninga/rotator1.htm

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Good old time
by Luc Leblanc 22 Feb '07

22 Feb '07

I remember playing with some of them. I even managed to keep a couple of them Hammarlund HQ-100C and twins Heatkit DX-100. The effects of aging is unfortunatly very noticeable on all of them but i still enjoy playing with their knobs even if they are a bit scratchy. Here is a link who will make's remembered theses old good old time where the manufacturers does not bother too much with marketing ideas they use the KISS system and it was pretty effective. http://mywebpages.comcast.net/KB8GPO/shack.html "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Re: ANDE-1 and File RAFT speak
by PA3GUO 22 Feb '07

22 Feb '07

Hi Tanan, ANDE: ************************************* VOICE Mode activation: Requires a command station in your footprint to activite VOICE for each pass. In Europe we have two stations doing this often, but other continents have less VOICE activity. First watch the telemetry at http://www.findu.com/cgi-bin/pcsat.cgi to see if it has been enabled. It's rare outside Europe. VOICE Mode usage: Once a command station has activated VOICE on ANDE you do not need to (=must not!) connect ANDE. Just enter in Hyperterminal as CONV: :TALK :Hello (mind the 5 spaces are TALK!) and it will say "HS1JAN says Hello" RAFT: *************************************1. VOICE Mode activation: Anyone can activate VOICE in by C RAFT. RAFT will say: "Welcome to TextSpeak" After you get connected, disconnect from RAFT without RAFT seeing that (go off frequency and force your TNC to disconnect). VOICE Mode usage: Once someone has activated VOICE on RAFT you do not need to (=must not!) connect RAFT. Just enter in Hyperterminal as CONV: :TALK :Hello (mind the 5 spaces are TALK!) and it will say "HS1JAN says Hello" More examples and details are at: http://home.vianetworks.nl/users/hamoen/pa3guo/voice.html or of course at: http://www.ew.usna.edu/~bruninga/ande-raft-ops.html or see my weblog of Jan 5th at: http://home.vianetworks.nl/users/hamoen/pa3guo/ >From the above you see that a simple "C RAFT" should provide already a spoken word out of space ! Please share the results. I am still waiting for the first mp3's from outside Europe ! Success, Henk, PA3GUO ps: I personally find RAFT much easier, I use a 10 element beam, without preamplifier. >Hello PA3GUO , 9W2QC and All HAM > >Could you please advice me step by step for command >control to speak of ANDE. I will control RAFT and >ANDE speak message of my send to command talk to >satellites. > >Best Regards, > >Tanan Rangseeprom HS1JAN , XU7ADN

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Re: Advice on antennas for working the LEO's (Gary McKelvie)
by John Kopala 22 Feb '07

22 Feb '07

Gary, My XYL is not fond of my antennas either. But we are also redoing the kitchen with new appliances, new counter top, and having the cabinets refinished with new doors. Then there is the upcoming vacation to Greece.... Not sure if that gives any leverage, but it certainly doesn't hurt. I'll still hear plenty about how ugly the antennas are after they go up. The problem is that beauty is in the eyes of the beholder. A Ham and the XYL certainly have different perceptions of beauty. I have interfaced a TAPR TrakBox kit that I "inherited" to my rotors. So I will have that part pretty well automated. There are a fairly significant number of interfaces that can be used with computer software to track satellites. Take a look at Nova for windows on the AMSAT site. There is a list of the different interfaces that it is compatible with. Makes a good research and shopping list if you plan to go that way. As far as the ERP goes, does the FT-847 allow you to smoothly control the power output? I have been experimenting using an IC-706MKII-G and a Yaesu Mobile FM radio. The Mobile radio radio has the disadvantage of only having high and low power so it is less than ideal for satellite work but it does provide duplex FM operation. You are still working on the antenna setup and an automated interface. In my case, I still need to get the radio to complete the setup. That will wait until I finish the antenna installation. I am planning on using an Icom IC-910H. I believe its power output is continuously variable. I"m also planning to use the matching preamps for weak signals. The beams with their inherent gain will enable working satellites on more passes and lower elevations. You may experience some fading with fixed polarization, but the gain of the antennas may compensate for that. Some of the satellites do require a little more power to get into, but your setup should be more than adequate. Toff; HS0NNU has some good alternatives. I'm sure you have already read his posting. A friend of mine suggested a similar approach for working without an elevation rotor. Most satellite passes don't reach particularly high elevations. Since you already have an elevation rotor, I would take advantage of that. You can track the satellite for the entire pass without having to switch antennas when the satellite elevation is high. That about covers everything that I can think of. Sounds like you'll have a really good setup when you finish. John Kopala N7JK Date: Thu, 22 Feb 2007 00:23:48 +0000 From: Gary McKelvie <garym(a)garym.org.uk> Subject: [amsat-bb] Re: Advice on antennas for working the LEO's To: amsat-bb(a)amsat.org Message-ID: <6.2.3.4.2.20070221234551.023d58c0(a)mail.btinternet.com> Content-Type: text/plain; charset="us-ascii"; format=flowed Hi John and others, Thanks for the picture lovely set up. If only I could get the XYL to let me stick something similar on the roof :) I do have an elevation rotator already :) IIRC a Kenpro 550 or 450. I have played about in the past with satellites, at that time I had a 11 element 2 meter RHCP and a 19 element 70 RHCP (Hence the elevation rotator). I mainly listened rather than transmitted. So really I have all the equipment except for a way to automate the antenna control, which as you say isn't too difficult to do manually and an antenna. I really don't thing the XYL will let me put up the 11 and 19 element antennas which I still have, as she thinks I have enough antennas in the air already <g> As you can see the sats aren't a passing fad with me, it's just that I will be on LEO's as a way of compromise. It has taken me a while to get back to them, but i bought the 847 recently to motivate me to actually put my words into action rather than just wishing on a star :P Several people have suggested using a vertical antenna such as a colinear. I have actually already tried this and the results are very disappointing, which I put down to my location rather than anything else as where I am is not particularly that good certainly form a VHF/UHF point of view. Other things I was wondering about was the ERP at the satellite, would it be too high causing me to be an alligator? Roughly the ERP on 2 would be about 50 watts and higher on 70 as the gain would be about 13 dBd plus whatever 5 watts equals. losses should be very small as the run of coax would be less than 30 feet, most of that being Westflex 103 and just the a very short length of RG 213 for getting the antenna hooked up and round the rotator/s. I'm not sure how to work out the path loss from my location (is there a standard figure or equation to use?) so at present I'm still very tempted to go with the Tonna, as it certainly seems to be better than the arrow antennas in that it has a higher gain figure. Please note I am not commenting on the quality of the construction of the Arrow. The other aspect I'm wondering about is cross polarization losses, the way that I plan to have it configured is with the 2 meter section horizontal and the 70 cm vertical. So would that be significant for the LEO's? 73 Gary G7USC

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Re: TS790E mod
by Marc Vermeersch 22 Feb '07

22 Feb '07

Hi Bill, http://www.symek.com/pdf/ts790.pdf may have what you are looking for. BR, -- /\/\arc, ON4AMV -----Original Message----- From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On Behalf Of Bill Ward Sent: Thursday, February 22, 2007 3:27 PM To: amsat-bb(a)amsat.org Subject: [amsat-bb] TS790E mod Dear All, Does anyone have any photographs/images (or a diagram) of the location of IC8 (for main RX) and IC1 (for sub RX) for 9600 baud modification of the Trio TS790. I don't have a complete set of circuit diagrams and don't want to mess it up! Thanks for your help. Regards, Bill. GM0ICF. _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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ISS suit comms copied
by john heath 22 Feb '07

22 Feb '07

Hi, Listen on 130.167MHz FM (on old MIR frequency) for the suit comms during the Russian EVA. Good strong copy here over the UK at 15:30 UTC. Worth going onto the net and looking at NASA TV to check that the space walkers are still active before trying it. Good luck 73 John G7HIA

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Memorandum of Understanding
by Luc Leblanc 22 Feb '07

22 Feb '07

I remember a Post with this title "TOWARDS A TRUE INTERNATIONAL AMSAT" unfortunatly i lost the copy of it if someone can found this post and the author i will be glad to received a copy of it. Look like i speaking to myself again here but it's often the way i get the best answers Memorandum of Understanding between AMSAT-DL, AMSAT-UK and AMSAT-NA AMSAT-DL for the last five years has been building the P3-E spacecraft to be launched into a HEO and intended as a replacement for previous P3 satellites. It's purpose is to facilitate communication between radio-amateurs worldwide and at the same time to test and verify technologies and procedures needed for the P5-A mission to Mars. AMSAT-DL to this day has invested about 500,000 Euro into this project. AMSAT-NA and AMSAT-UK wish to contribute to the P3-E project, primarily with the goal to have the launch of P3-E as early as possible in order to give to their respective members the use of the communication services provided by P3- E. It is recognized that the capability of AMSAT-DL to raise funds limits the speed of the development of P3-E. In order to make a launch possible in 2008, AMSAT-DL has an immediate need of 40,000 Euro and an estimated need of ~200,000 Euro prior to the actual launch-date. AMSAT-NA and AMSAT-UK wish to help with the raising of these requirements by providing 30,000 Euro (AMSAT-NA) and 10,000 Euro (AMSAT-UK) in the near future. Furthermore, they wish to contribute by raising additional funding as the actual launch arrangements materialize. In order to achieve an effective cooperation in the funding effort and the construction and launching of P3-E, the following details to implement the cooperation are agreed: 1. The three AMSAT organizations will closely coordinate their activities and monitor progress of the project by frequent mutual consultations on the telephone. To this end the three parties will hold nominally a monthly telephone conference to review the status of the project and to identify problem areas. At this time the three organizations will be represented by Rick, Jim and Peter at these telephone-conferences. 2. According to need, the three organizations agree to hold sufficiently frequent meetings in person to review the project status. These meetings are assumed to be desirable with a frequency of 6-12 month between them. 3. It is understood by all three organizations that procuring a timely launch for P3-E is one of the bigger challenges of the project. AMSAT-DL is concentrating major efforts of procuring a launch with Arianespace, while AMSAT- NA is trying to develop a launch opportunity within the USA. All parties recognize that major progress in funding is contingent on a firm launch agreement. All parties further recognize that a timely construction and integration of P3-E is critically dependent on all parties giving highest priority to fulfilling their respective commitments. 4. All three organizations understand that funding progress is dependent on effective information dissemination worldwide. To this end the three organizations reiterate their mutual agreement that each organization can publish all P3-E related publications of the other two organizations in their respective public organs without special permission. Furthermore, each organization is free to prepare 'official' statements about the project, but these publications must be agreed with the project management of P3-E (AMSAT- DL) prior to publication. Requests for agreement to publish will be sent to Peter (or another person chosen by him), who will use best efforts to respond within 7 days with an answer. With other publications by individual authors no such agreement is necessary provided that the context makes it is clear that the publication is not an official declaration by the project management or AMSAT-DL. 5. AMSAT-DL reiterates that the operational use of P3-E will be primarily to provide amateur radio communication services. But all parties also understand that the spacecraft is a dual service satellite, and that AMSAT-DL retains the right to occasionally reduce the provision of amateur radio services if work towards P5-A requires this. A-DL will use due diligence to minimize the impact of the P5-A requirements on the provision of amateur services. For AMSAT-DL For AMSAT-NA For AMSAT-UK Peter DB2OS Rick W2GPS J Jim G3WGM "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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TS790E mod
by Bill Ward 22 Feb '07

22 Feb '07

Dear All, Does anyone have any photographs/images (or a diagram) of the location of IC8 (for main RX) and IC1 (for sub RX) for 9600 baud modification of the Trio TS790. I don't have a complete set of circuit diagrams and don't want to mess it up! Thanks for your help. Regards, Bill. GM0ICF.

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Re: RAFT and ANDE speech callsigns
by Robert Bruninga 22 Feb '07

22 Feb '07

> How late will the command stations stay up at night > to activate the voice synthesizer on Ande? I have a > very timely and high EL pass over my location > (Southern CA) at 9:40 PM PST on 2/22 that I'd like to try... We only had one west coast command station, but he is on a long temporary assignment out of area, so we have command stations in California at this time. But I think I know of one I can ask and see if he is willing to operate these west caost passes when convenient. Command station needs a good OSCAR array on 2 meters for commanding. Bob, WB4APR > Robert Bruninga <bruninga(a)usna.edu> wrote: > > Now that ANDE and RAFT are both speaking, here are the > packet-to-voice synthesizer rules: > > 1) it turns the packet header into "XXXXXX says" > 2) it then speaks normal english and normal spellings.. > 3) It tries to spell CAPS, but we found that to force it to > speak a callsign correctly independent of starting character if > you make the second character a "!" then it will always speak > properly. Such as W!B4APR will be spoken as wb4apr as expected. > > Here are DK3WN and PE1ITR in packet-to-voice QSO: > > http://www.ew.usna.edu/~bruninga/ande/ande_11022007_2238.mp3 > > WB4APR, Bob > > ----original message----------------------------------------- > > RAFT is weaker, but speaks... > * if ANYONE has CONNECTED RAFT > * Then any APRS MSG to TALK will be spoken > > ANDE is stronger, but is lazy and sleeps unless woken up. > * ANDE must be awakened by 145.825 activity > * ANDE voice must be activated by command station each pass > * Then any APRS MSG to TALK will be spoken > > ANDE has better link performance for users, but needs command > stations, but you get more workable passses due to its better > links. > > For more info, see the ANDE-RAFT-OPS web page. > http://www.ew.usna.edu/~bruninga/ande-raft-ops.html > > Enjoy! > > Bob Bruninga, WB4APR > US Naval Academy Satellite Lab > > > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are > those of the author. > Not an AMSAT-NA member? Join now to support the amateur > satellite program! > Subscription settings: > http://amsat.org/mailman/listinfo/amsat-bb > > > > ________________________________ > > TV dinner still cooling? > Check out "Tonight's Picks" > <http://us.rd.yahoo.com/evt=49979/*http://tv.yahoo.com/> on > Yahoo! TV. >

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Memorandum of Understanding
by Luc Leblanc 22 Feb '07

22 Feb '07

I remember a Post with this title "TOWARS A TRUE INTERNATIONAL AMSAT" unfortunatly i lost the copy of it if someone can found this post and the author i will be glad to received a copy of it. Look like i speaking to myself again here but it's often the way i get the best answers Memorandum of Understanding between AMSAT-DL, AMSAT-UK and AMSAT-NA AMSAT-DL for the last five years has been building the P3-E spacecraft to be launched into a HEO and intended as a replacement for previous P3 satellites. It's purpose is to facilitate communication between radio-amateurs worldwide and at the same time to test and verify technologies and procedures needed for the P5-A mission to Mars. AMSAT-DL to this day has invested about 500,000 Euro into this project. AMSAT-NA and AMSAT-UK wish to contribute to the P3-E project, primarily with the goal to have the launch of P3-E as early as possible in order to give to their respective members the use of the communication services provided by P3- E. It is recognized that the capability of AMSAT-DL to raise funds limits the speed of the development of P3-E. In order to make a launch possible in 2008, AMSAT-DL has an immediate need of 40,000 Euro and an estimated need of ~200,000 Euro prior to the actual launch-date. AMSAT-NA and AMSAT-UK wish to help with the raising of these requirements by providing 30,000 Euro (AMSAT-NA) and 10,000 Euro (AMSAT-UK) in the near future. Furthermore, they wish to contribute by raising additional funding as the actual launch arrangements materialize. In order to achieve an effective cooperation in the funding effort and the construction and launching of P3-E, the following details to implement the cooperation are agreed: 1. The three AMSAT organizations will closely coordinate their activities and monitor progress of the project by frequent mutual consultations on the telephone. To this end the three parties will hold nominally a monthly telephone conference to review the status of the project and to identify problem areas. At this time the three organizations will be represented by Rick, Jim and Peter at these telephone-conferences. 2. According to need, the three organizations agree to hold sufficiently frequent meetings in person to review the project status. These meetings are assumed to be desirable with a frequency of 6-12 month between them. 3. It is understood by all three organizations that procuring a timely launch for P3-E is one of the bigger challenges of the project. AMSAT-DL is concentrating major efforts of procuring a launch with Arianespace, while AMSAT- NA is trying to develop a launch opportunity within the USA. All parties recognize that major progress in funding is contingent on a firm launch agreement. All parties further recognize that a timely construction and integration of P3-E is critically dependent on all parties giving highest priority to fulfilling their respective commitments. 4. All three organizations understand that funding progress is dependent on effective information dissemination worldwide. To this end the three organizations reiterate their mutual agreement that each organization can publish all P3-E related publications of the other two organizations in their respective public organs without special permission. Furthermore, each organization is free to prepare 'official' statements about the project, but these publications must be agreed with the project management of P3-E (AMSAT- DL) prior to publication. Requests for agreement to publish will be sent to Peter (or another person chosen by him), who will use best efforts to respond within 7 days with an answer. With other publications by individual authors no such agreement is necessary provided that the context makes it is clear that the publication is not an official declaration by the project management or AMSAT-DL. 5. AMSAT-DL reiterates that the operational use of P3-E will be primarily to provide amateur radio communication services. But all parties also understand that the spacecraft is a dual service satellite, and that AMSAT-DL retains the right to occasionally reduce the provision of amateur radio services if work towards P5-A requires this. A-DL will use due diligence to minimize the impact of the P5-A requirements on the provision of amateur services. For AMSAT-DL For AMSAT-NA For AMSAT-UK Peter DB2OS Rick W2GPS J Jim G3WGM "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Effects of ionosphere in sat comms
by Paulo Pinto 22 Feb '07

22 Feb '07

Hi, I've been active in VHF/UHF LEO satellites for a couple of years now, after having spend many years around HF DX'ing. I always enjoyed sat operation since my first sat qso back in 1993 on RS-12 Mode K. One of my favorite subjects is propagation phenomena and I pay special attention to the VHF/UHF freqs. I pick as an example VO-52 satellite. The day before yesterday, on a 52 degree pass, I got very good downlink signals with my narrow and limited antenna setup: a fixed 9 elem TONNA at abt 30 deg. El. and 10 deg. Az. Yesterday, the same pass conditions gave me very poor reception. I understand that lack of satellite axis stabilization can be a high factor for this behavior, as the antennas may be turned around. But my question is: How severe earth's magnetic field and ionization of the atmosphere can affect Satellite Communications? If we must apply same theory as for ground communication, as logic suggests, what kind of refraction or dispersion may be associated with this epoch ? If don't know if this is a dummy question, but I would like to hear from those of you interested in this matters. 73 CT1ETE, Paulo

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Re: Could we raise orbit thru magnetorque?
by G0MRF＠aol.com 22 Feb '07

22 Feb '07

Hi all. I think we have all had fun looking at ways to raise an orbit and the answer seems to be, from the basic physics, that you will exert an extremely small force the effectiveness of which is dependant on the distance between the poles and the strength of the magnet, and some other things too However, to put this into perspective...........AO-51, which we all know and love, uses a similar principle for attitude stabilisation. Instead of repelling the space craft into outer space the magnet on board causes the spacecraft to rotate one turn per orbit. This ensures that over the northen 'pole' the antenna end of the spacecraft points straight down. Over the southern pole the antennas point in the other direction. (sorry southern hemisphere) - for those of us living between 50N and 50S it also allows us to predict whether we will get better signals (particually on 2.4G) as the spacecraft approaches or moves away from us. By knowing the attitude we know if the antennas are pointing towards us or not. Of course, what does not happen with AO-51 is that force of attraction from its magnet does not cause any measurable deteroration in the orbit. i.e. AO-51 does not show any tendancy to dramtically spiral down and crash into the earth. why? well imagine the forces involved. 1) you have the kinetic energy of a 20kg (?) spacecraft travelling at 18,000MPH. That's a lot of energy. - difficult to imagine....OK Just imagine 20kg hitting the side of your house at that speed....Yes, thats a lot of energy! compared to. 2) The force of a magnet with the poles 1 foot apart 1.5 million feet from the ground. Not sure if that helps. But it did make me understand how something with so much energy due to its velocity can be easily rotated on its own axis by a magnet, but not have its direction of motion changed by a that magnet. tnx David G0MRF In a message dated 22/02/2007 07:32:52 GMT Standard Time, ojwanga2(a)asme.org writes: The craft could push-off the magnetic field of the planet, using it as a rail. Andrew. KI4LTH/5Z4FT.

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Re: Could we raise orbit thru magnetorque?
by Marc Vermeersch 22 Feb '07

22 Feb '07

All, So why is the maglev principle (magnetic levitation) http://www.google.be/search?hl=nl&q=maglev&meta= not applicable in space? Magnetic levitation applied to trains generates an upward force equal and opposite to the earth's gravitation. BR, -- /\/\arc -----Original Message----- From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On Behalf Of Bruce Bostwick Sent: Wednesday, February 21, 2007 6:51 PM To: amsat-bb(a)amsat.org Subject: [amsat-bb] Re: Could we raise orbit thru magnetorque? That's been my understanding as well. Magnetorquing by itself can drive rotation but not translation. Its main benefit is that it saves propellant, weight, and complexity, as well as moving parts and the risk of a hypergolic plumbing assembly exploding and taking out half the spacecraft's systems, by allowing the spacecraft to handle rotation with more reliable torquing coils and get its energy for that from the PV panels. Changing orbits still requires firing a reaction thruster of some sort. On Feb 20, 2007, at 9:47 AM, John Mock KD6PAG wrote: >> Argument is: if when satellite is in the north, a north magnetic >> field is >> applied on z plane, will satellite raise orbit ? Same but opposite >> on south. >> Considering limited energy available could this raise be >> significant if >> applied on all orbits ?. > > I believe magnetorquing can only change the orientation of a > satellite and > not its orbit. It is certainly used in the process of changing an > orbit, > in order to get a thrusting device pointing in a direction where it > will > do something useful. But by itself, it can't change an orbit. It > can help > point antennas in the proper direction, etc. > > -- KD6PAG (Networking Old-Timer, Satellite QRPer) "People don't like to be meddled with. We tell them what to do, what to think, don't run, don't walk. We're in their homes and in their heads and we haven't the right. We're meddlesome." -- River Tam, "Serenity" _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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Re: Advice on antennas for working the LEO's
by TOFFY 22 Feb '07

22 Feb '07

>The other aspect I'm wondering about is cross polarization losses, >the way that I plan to have it configured is with the 2 meter section >horizontal and the 70 cm vertical. So would that be significant for the LEO's? Dear Gary and All I have use . A homebrew antenna 2 Band on same boom. 2m. band is 5ele. Horizontal and the 70 cm. 9ele. vertical on boom length about 1.7 m. Have distance 0.5m. between 2 Driven element.(1/4 lamda on TX band) Base Design each band from DK7ZB Yagi antenna. A boom is elevation-Lock at 15 degree and use only azimuth rotator. antenna height about 5 m. I can use AO-51,FO-29,ISS,RAFT,ANDE,AO-7(mode-A only) ,VO52(RX only) and monitor all CW Cube-sat at NOT over 40 degree elevation. Signal have QSB on FM satallite. Sometime can work low to 3 degree elevation. At high elevation I switch to use Moxon on 2m. and Quadrifilar Helicol on 70cm. 73s de Toff HS0NNU ____________________________________________________________________________________ Yahoo! Music Unlimited Access over 1 million songs. http://music.yahoo.com/unlimited

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AMSAT-BB
by Mr Jeffrey Ross 22 Feb '07

22 Feb '07

HI ALL, OK GREAT NOW BACK TO THE SATS I SEE GREAT, HI WHATS THE HAM MOTTO AGAIN? MAYBE THAT SHOULD BE POSTED HERE ONCE IN AWHILE. KC8GKF

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Celestrak Keps
by kromestars＠frontiernet.net 22 Feb '07

22 Feb '07

Hi All: What does the brackets [-] [+] [P] mean beside each amsat on Celestrak's website. My sat database has AO51 listed twice as a [-] and [+]. The epoch time for each AO51 I have listed is not the same. Which bracket sign should I use. Thanks, Ron

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Re: Could we raise orbit thru magnetorque?
by Marc Vermeersch 22 Feb '07

22 Feb '07

Hi Jim, Is this the same principle? I believe this has to do with the gravitational field not the magnetic field. -----Original Message----- From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On Behalf Of James C. Mankin Sent: Wednesday, February 21, 2007 7:16 PM To: Bruce Bostwick Cc: amsat-bb(a)amsat.org Subject: [amsat-bb] Re: Could we raise orbit thru magnetorque? I seem to remember back when they were testing tethered satellites from the Shuttle that one of the possible applications being discussed was that if you could deploy enough wire and put the right current through it that it was possible to change orbits. I dont see why it wouldnt work if a large loop of wire could be created say between three satellites in a triangle. Jim Mankin n5x(a)psu.edu Bruce Bostwick wrote: > That's been my understanding as well. Magnetorquing by itself can > drive rotation but not translation. Its main benefit is that it > saves propellant, weight, and complexity, as well as moving parts and > the risk of a hypergolic plumbing assembly exploding and taking out > half the spacecraft's systems, by allowing the spacecraft to handle > rotation with more reliable torquing coils and get its energy for > that from the PV panels. Changing orbits still requires firing a > reaction thruster of some sort. > > On Feb 20, 2007, at 9:47 AM, John Mock KD6PAG wrote: > > >>> Argument is: if when satellite is in the north, a north magnetic >>> field is >>> applied on z plane, will satellite raise orbit ? Same but opposite >>> on south. >>> Considering limited energy available could this raise be >>> significant if >>> applied on all orbits ?. >>> >> I believe magnetorquing can only change the orientation of a >> satellite and >> not its orbit. It is certainly used in the process of changing an >> orbit, >> in order to get a thrusting device pointing in a direction where it >> will >> do something useful. But by itself, it can't change an orbit. It >> can help >> point antennas in the proper direction, etc. >> >> -- KD6PAG (Networking Old-Timer, Satellite QRPer) >> > > "People don't like to be meddled with. We tell them what to do, what > to think, don't run, don't walk. We're in their homes and in their > heads and we haven't the right. We're meddlesome." -- River Tam, > "Serenity" > > > > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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Advice on antennas for working the LEO's
by John Kopala 21 Feb '07

21 Feb '07

Hi Gary, I just thought I'd throw in my 2 cents. I don't have a great deal of experience with satellites, but I will offer a few comments based upon my limited experience. The antenna by Tonna with 13 DBi on 2 and 16 DBi on 70 is going to have a fairly narrow beamwidth and is obviously a fairly long antenna. It will need to be pointed with reasonable accuracy. If you are 30 degrees off you might as well be pointed the other way. With that much gain, you should be able to work most satellites without the preamps. The problem is aiming the antennas. I recommend using azimuth and elevation rotors. Azimuth alone won't do it with narrow beamwidth antennas if the satellite pass reaches a significant elevation. The software programs will tell you where to aim the antenna and you can easily do that with the rotor control boxes while working stations on the radio. The adjustments are easy and don't take that much time away from operating. I tried an experiment with a tripod and a set of KLM antennas mounted on a cross boom. Aiming a large set of antennas manually can quickly turn into a full time job. I was testing this to see if it was practical to take to scout outings. After trying the tripod setup, I modified the setup and put in my rotors. Using the rotor controllers, made this very workable. I'll send you a picture separately of the setup. Basically, I had a stake in the ground, a 5 ft mast slipped over the stake with a rotor at the top end. The rotor is guyed with 3 additional stakes. Above the rotor is another 5 ft mast section, elevation rotor, crossboom, and VHF and UHF satellite antennas. Obviously, if you are using a single dual band antenna, the whole setup is somewhat simpler. What you see in the picture is destined for my roof plus additional antennas. If you use an antenna that is small enough to hold and point by hand, you will lose a lot of gain vs the big antenna, but it will be a lot easier to point. You still need real time data for the azimuth and elevation and some sort of azimuth and elevation aids would help. Some people enjoy working satellites with the Arrow antenna. Personally, I have not have a lot of luck with reading azimuth and elevation, manually aiming, talking on the radio all at the same time. John Kopala N7JK Date: Wed, 21 Feb 2007 09:44:00 +0000 From: Gary McKelvie <garym(a)garym.org.uk> Subject: [amsat-bb] Advice on antennas for working the LEO's To: amsat-bb(a)amsat.org Message-ID: <6.2.3.4.2.20070221092821.023911f8(a)mail.btinternet.com> Content-Type: text/plain; charset="us-ascii"; format=flowed Hi to the List, My names Gary, I'm just getting started in the sats, initially looking to work the LEO's with FO 29 in particular. The station is going to consist of a Yaesu FT 847 cat controlled by Ham Radio Delux to control the radio for Doppler. It's suitable antennas that I have a problem with from web pages etc a lot of people seem to use the arrow antenna, which unfortunately as far as I can see is not available here in the UK. There is an antenna by Tonna which is a 9 element on 2 and 19 element on 70 claimed gain is 13 dBi on 2 16 dBi on 70. The feed line I will be using to get to the antenna will be a short run of West Flex 103 (which is half the loss of RG 213) I'm hoping to avoid the use of pre amps if possible as getting power to them is a problem. This antenna set up will be temporary in nature, with it being set up each time it is in use. I will be able to rotate the antenna in azimuth by hand or using a azimuth rotator. So would this setup work? So really all I'm not sure is how effective this setup will be and am looking for ideas and suggestions. Regards Gary G7USC Gary McKelvie G7USC Web : www.garym.org.uk

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Re: Could we raise orbit thru magnetorque?
by lu7abf 21 Feb '07

21 Feb '07

I got positively excited reading the amount of wise and elaborate comments on BB regarding raising a bird's orbit thru magnetic fields. It is showing expertise and individuals capable and knowledgeable aimed to the future. Just to add some thoughts will like to comment experience on recent satellites. It is amazing what recent CO Japanese Cubesats are doing with magnetorquers. They can keep a 1 degree Z plane accuracy pointing to earth !! . It is also amazing I can copy 80mw CW from these birds quite strong and readable, due their antennas are pointing right to earth. These sats have magnetometers able to resolve a small fraction of a Gauss in three planes, so they know where they are, and which direction is pointing the earth magnetic field. So at the right point at the right satellite position these birds could send controlled pulses to one or more magnetorque coils with objective of producing a repelling force against earth magnetic field. Being satellite in stable and known attitude, then a small force can do things and perhaps raise her orbit. Their small keps decay rate possibly could be overcomed thus keeping a healthy and longer life for the bird. This could be useful for valuable satellites endangered by low orbit as those launched from the ISS. Just dreaming on possibilities. Thanks much for time and comments ! > > All, > > So why is the maglev principle (magnetic levitation) > http://www.google.be/search?hl=nl&q=maglev&meta= > not applicable in space? > > Magnetic levitation applied to trains generates an upward force equal and > opposite to the earth's gravitation. > > BR, > -- There are no steel rails up in the sky... ;-) -jari oh3uw

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Re: Earths Magnetic Field strength
by lu7abf 21 Feb '07

21 Feb '07

Tks Tony for comment, What I was trying to explain is that magnetic field is a dipole, with each pole pointing away of the magnet. Rotation in the compass needle is caused by rejection of alike poles and attraction of different poles, and as such is producing a force. So the needle moves and in fact does receive energy otherwise it will not be moving. I was not speaking on using an speaker magnet, we have a free magnet that is mother earth. This marvelous magnet is causing auroras as one demonstration of its energy. Why not use this magnet by opposing a magnet created at the satellite at the right earth spot where magnetic lines are pointing straight away from earth?. It is amazing what recent CO Japanese Cubesats are doing with magnetorquers. They can keep a 1 degree Z plane accuracy pointing to earth !! . It is also amazing I can copy 80mw CW from these birds quite strong and readable, due their antennas are pointing right to earth. These sats have magnetometers able to resolve a small fraction of a Gauss in three planes, so they know where they are, and which direction is pointing the earth magnetic field. So at the right point at the right satellite position these birds can send a controlled PWM pulse to one or more magnetorque coils with objective of producing a repelling force against earth magnetic field. As satellite is at a stable height situation, then a small force can do things and perhaps raise her orbit. Their small keps decay possibly could be overcame thus keeping a healthy and longer life for the bird. This could be useful for satellites in orbit endangered by low orbit as those launched from the ISS. Just dreaming on possibilities. Thanks much for time and comments ! Best 73, Pedro Converso lu7abf(a)amsat.org.ar www.amsat.org.ar ============================ Tony Langdon wrote: Subject: [amsat-bb] Re: Earths Magnetic Field strength From: Tony Langdon <vk3jed@xxxxxxxxx> Date: Thu, 22 Feb 2007 07:12:15 +1100 At 03:00 AM 2/22/2007, lu7abf wrote: >If the separation between poles of a small magnet defines strength >of force, then a small separation as in a magnetic compass needle >only 1 inch long placed at equator, over 6000 miles from poles will >not move. Instead it does. But that is rotation, which is equivalent to magnetotorquing, and we all agree this works well. However, your compass for a rare earth speaker magnet doesn't actually move across the table top in Earth's magnetic field, does it? THAT would be equivalent to trying to move the satellite into a new orbit. 73 de VK3JED http://vkradio.comIf the separation between poles of a small magnet defines strength of force, then a small separation as in a magnetic compass needle only 1 inch long placed at equator, over 6000 miles from poles will not move. Instead it does. Also much smaller magnetic dipoles even molecular inside a melted ferrous material does orient and keep their mood if material crystallize. I think it is a matter of poles orientation i.e. on small needle, north pole is opposite to south, so it does not exert force in the same direction of the south pole, but opposite. (It's difficult to explain without using a sketch, and in a not my mother language, excuse me) Regards to everybody and thanks for lending some brain cells to the idea of trying control bird's height. 73, Pedro Converso lu7abf(a)amsat.org.ar www.amsat.org.ar Robert Bruninga wrote: >> I moved a handheld compass towards a heavy... speaker magnet. >> When the compass was a few inches away from the magnet, >> it changed direction from North to the direction of the magnet. > >As someone else pointed out earlier, that is because of the >gradient or difference in "force" on one end versus the other. >One end of the compass was an inch or so closer to one pole of >the magnet than the other end. > >But in space, the pole of your spacecraft magnet that you are >trying to repel, is only one foot closer to the Earths pole, >than the other pole which is attracted. So the difference in >distance of the force that is pulling to the one that is pushing >is only 1 foot out of say 21,120,000 feet to the Earth's pole. >Hence the net force difference is a 21 millionth SQUARED or >.00000000000004 of the force that you observed on the compass. > >Or something like that. >Bob

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Re: Could we raise orbit thru magnetorque?
by George Henry 21 Feb '07

21 Feb '07

In your example of the train, the force that overcomes gravity to levitate the train is not generated by magnetic repulsion of the train against the earth, but rather against the rail above which the train rides, which contains strong sequenced electromagnets to generate both the lifting force and the propelling force. In space, there's no nearby "rail" to push against. George, KA3HSW -----Original Message----- >From: Marc Vermeersch <amvm(a)skynet.be> >Sent: Feb 21, 2007 12:55 PM >To: amsat-bb(a)amsat.org >Subject: [amsat-bb] Re: Could we raise orbit thru magnetorque? > >All, > >So why is the maglev principle (magnetic levitation) >http://www.google.be/search?hl=nl&q=maglev&meta= >not applicable in space? > >Magnetic levitation applied to trains generates an upward force equal and >opposite to the earth's gravitation. > >BR, >-- >/\/\arc > >

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Re: Could we raise orbit thru magnetorque?
by Andrew O. Ojwang 21 Feb '07

21 Feb '07

The craft could push-off the magnetic field of the planet, using it as a rail. Andrew. KI4LTH/5Z4FT.

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Re: Earths Magnetic Field strength
by lu7abf 21 Feb '07

21 Feb '07

If the separation between poles of a small magnet defines strength of force, then a small separation as in a magnetic compass needle only 1 inch long placed at equator, over 6000 miles from poles will not move. Instead it does. Also much smaller magnetic dipoles even molecular inside a melted ferrous material does orient and keep their mood if material crystallize. I think it is a matter of poles orientation i.e. on small needle, north pole is opposite to south, so it does not exert force in the same direction of the south pole, but opposite. (It's difficult to explain without using a sketch, and in a not my mother language, excuse me) Regards to everybody and thanks for lending some brain cells to the idea of trying control bird's height. 73, Pedro Converso lu7abf(a)amsat.org.ar www.amsat.org.ar Robert Bruninga wrote: >> I moved a handheld compass towards a heavy... speaker magnet. >> When the compass was a few inches away from the magnet, >> it changed direction from North to the direction of the magnet. > >As someone else pointed out earlier, that is because of the >gradient or difference in "force" on one end versus the other. >One end of the compass was an inch or so closer to one pole of >the magnet than the other end. > >But in space, the pole of your spacecraft magnet that you are >trying to repel, is only one foot closer to the Earths pole, >than the other pole which is attracted. So the difference in >distance of the force that is pulling to the one that is pushing >is only 1 foot out of say 21,120,000 feet to the Earth's pole. >Hence the net force difference is a 21 millionth SQUARED or >.00000000000004 of the force that you observed on the compass. > >Or something like that. >Bob

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Re: Could we raise orbit thru magnetorque?
by John Mock KD6PAG 21 Feb '07

21 Feb '07

> Argument is: if when satellite is in the north, a north magnetic field is > applied on z plane, will satellite raise orbit ? Same but opposite on south. > Considering limited energy available could this raise be significant if > applied on all orbits ?. I believe magnetorquing can only change the orientation of a satellite and not its orbit. It is certainly used in the process of changing an orbit, in order to get a thrusting device pointing in a direction where it will do something useful. But by itself, it can't change an orbit. It can help point antennas in the proper direction, etc. -- KD6PAG (Networking Old-Timer, Satellite QRPer)

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recent thread
by Al Zoller 21 Feb '07

21 Feb '07

I know the recent thread has dwindled but I just received a news letter with these two quotes that are very germane: “In stirring up tumult and strife, the worst men can do the most, but peace and quiet cannot be established without virtue.” —Cornelius Tacitus “Speak when you are angry, and you will make the best speech you will ever regret.” —Ambrose Bierce If you'd like the source, email off list. 73 de N7UB, Al LM1505

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Re: Earths Magnetic Field strength
by Patrick McGrane 21 Feb '07

21 Feb '07

Greetings- I wont bother with your disinformation and please dont take my writings out of context. You must use a blackberry or something, your like a hawk on the BB. Bye Bye, pat n2oeq Everyone else; always look at the basic ideas or the "big picture" ------- Original Message ------- >From : Robert Bruninga[mailto:[email protected]] Sent : 2/21/2007 9:34:44 AM To : amsat-bb(a)amsat.org Cc : Subject : RE: [amsat-bb] Re: Earths Magnetic Field strength > I moved a handheld compass towards a heavy... speaker magnet. > When the compass was a few inches away from the magnet, > it changed direction from North to the direction of the magnet. As someone else pointed out earlier, that is because of the gradient or difference in "force" on one end versus the other. One end of the compass was an inch or so closer to one pole of the magnet than the other end. But in space, the pole of your spacecraft magnet that you are trying to repel, is only one foot closer to the Earths pole, than the other pole which is attracted. So the difference in distance of the force that is pulling to the one that is pushing is only 1 foot out of say 21,120,000 feet to the Earth's pole. Hence the net force difference is a 21 millionth SQUARED or .00000000000004 of the force that you observed on the compass. Or something like that. Bob _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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Report on Echo in the Middle School Classroom
by Bruce Robertson 21 Feb '07

21 Feb '07

Gang: After two mornings of teaching a total of three 50min classes, I can say that a presentation based around AMSAT activities (and Echo specifically) works very well at the 6th grade level. However, the students were already engaged in a science curriculum regarding basic aeronautics, astronomy and planets, and they were about to discuss satellites to a greater or lesser degree in the coming weeks. After an introduction to the idea of a satellite and their uses, the bulk of my presentation centered around the design, building and journey to launch of Echo. I'm afraid I pillaged Bill Greene's on-line photo archive. (Students always love the one of Echo strapped into its own seat aboard the plane to Kazakhstan.) Then I prepped them to listen to a short QSO between myself and David EB4DEH, who kindly sent me a mp3 a year ago. For today's class I arranged with a local ham to have them do an satellite-style contact over a local repeater (giving callsign and gridsquare). Unfortunately, I wasn't able to alert him that the schedule had changed. Nevertheless, the students were interested by the repeater's response, and I could show that it was much like the equipment on-board Echo. Finally, I talked about some Cubesat projects, including Genesat and the upcoming CanX-2, of special interested due to its Canadian origin. Surprisingly, to me at least, Cubesats seemed to resonate with them. (My daughter, who was in one of the classes, confirmed this impression by listening in to later conversations.) I think their simplicity appealed, as well as the fact that these were made by university students on a budget. I'd say these presentations went well, even though we never listened to a satellite live. Something to consider if the technical challenges of doing a live demo seem to daunting. In effect, your experience and enthusiasm will carry the event. It should be said that I am a university professor and used to working in the classroom (though my teaching is in the Humanities). Nevertheless, this age group warms quickly to the guest speaker and is easily impressed by the cool stuff. While the teachers involved thanked me profusely, I think I should pass on their gratitude to the AMSAT community for providing such an engaging basis for education. And to think that they never even spoke over the bird! I have some recommendations for AMSAT based on this experience. First, a more extensive set of free-to-use educational diagrams would be very useful and, I think, an excellent recruitment tool. They would probably find their way onto Wikipedia and other places, with a reference to AMSAT. There may be more than I think already available: the AMSAT website was briefly and uncharacteristically unavailable when I was working on the presentation on Sunday night. More ambitiously, I think we should consider establishing the infrastructure for a network of Middle or High Schools clubs or classrooms who are affiliated with the cubesat and APRS satellite initiatives and have stations that feed them data. What sort of infrastructure? There's two important components I can think of. To my mind what matters here from the school's and students' perspectives is kudos, recognition from a larger group. If this is so, CalPoly or some other institution could produce some certificates recognizing Ms. Smith's class in Podunk Hollow, NB as a "Member of the International Satellite Collective" or what-have-you. Make a website, and list the participating schools for each year. Ms. Smith feels (rightly, mind you) that she's done something to make her class part of the larger world, and her school administration has something to brag about, too. Participation would be determined by submitting telemetry, simple as that. If the CAPE people are thinking of engaging local schools, they might consider how much little greater effort it would take to globalize the effort, seeding cubesat stations around the world. Bob's Navy lab would also be a great place for this. The other component of such a job would be to streamline and automate the collection and dissemination of telemetry. I'm working on a Jabber project that does this; stay tuned for more. 73, Bruce VE9QRP

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Greetings from a new op - help me wet these feet
by Jonny 290 21 Feb '07

21 Feb '07

Hi, KC4YLV here and it's been a dream of mine ever since I was a young kid to get on the amateur satellites. Well, close to two decades later and I can finally start dabbling with it. Can anybody give me a primer as to what the hottest satellites are right now? It unfortunately seems as though a lot of the info on the amateur satellites is outdated or at least 2, more often 5 years ore older. Given the lifespan-limited nature of our precious birds, it's really tough for me to figure out just what's still operating and what's gone. The mailing list seems dynamic and gives me hope - I know Amateur Radio is declining somewhat and wanted to be reassured that the birds are still being used and experimented with. I have 40 watts of all-mode 2m TX, 55 watts of 2m/70cm FM TX, and extra receivers (unfortunately I do not have 435 SSB capability but am working on that angle presently). I'm also set up for packet via MixW and can build whatever interfaces I'd need for that angle - I am quite interested in playing with digital modes. I've found plans for 'eggbeaters' and 'texas potato mashers' and feel that I would like to get started with omni antennas before I worry about gain antennas and tracking. Am I going to have enough ERP to have fun, or will I just be disappointed? Also, can anybody clue me in to the status of any high orbit or molniya satellite projects? the phase 3e pages seem to be dormant, have conflicting, or sometimes incorrect info. 73, Matt KC4YLV em26

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Earths Magnetic Field strength
by Patrick McGrane 21 Feb '07

21 Feb '07

Greetings to the group. I Thought the argentinians idea of using the magnetic field for propulsion was a great one! Let me share a simple experiment with you; Back in the late 80's I tried a simple experiment, I moved a handheld compass towards a heavy 10 ounce speaker magnet. When the compass was a few inches away from the magnet , it changed direction from North to the direction of the magnet. I think this illustrates that the earth's magnetic field is very strong, not weak. Try it yourself, then use your imagination. 73, pat N2OEQ

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Advice on antennas for working the LEO's
by Gary McKelvie 21 Feb '07

21 Feb '07

Hi to the List, My names Gary, I'm just getting started in the sats, initially looking to work the LEO's with FO 29 in particular. The station is going to consist of a Yaesu FT 847 cat controlled by Ham Radio Delux to control the radio for Doppler. It's suitable antennas that I have a problem with from web pages etc a lot of people seem to use the arrow antenna, which unfortunately as far as I can see is not available here in the UK. There is an antenna by Tonna which is a 9 element on 2 and 19 element on 70 claimed gain is 13 dBi on 2 16 dBi on 70. The feed line I will be using to get to the antenna will be a short run of West Flex 103 (which is half the loss of RG 213) I'm hoping to avoid the use of pre amps if possible as getting power to them is a problem. This antenna set up will be temporary in nature, with it being set up each time it is in use. I will be able to rotate the antenna in azimuth by hand or using a azimuth rotator. So would this setup work? So really all I'm not sure is how effective this setup will be and am looking for ideas and suggestions. Regards Gary G7USC Gary McKelvie G7USC Web : www.garym.org.uk Mobile : +447968501863 MSN Messenger : gm7usc(a)hotmail.com So Long and Thanks for all the Fish

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Re: US launch vehicle history [was: Re: Godwin's law]
by Edward Cole 21 Feb '07

21 Feb '07

At 02:17 PM 2/20/2007, Margaret Leber wrote: > From: Patrick McGrane [mailto:[email protected]] > > > The US brought Werner Von Braun here to the US to design rockets > > which included the Atlas 5. > >Check your history. Von Braun worked on Redstone and >Jupiter/Jupiter-C, since he was working for the Army. The original >Atlas was the work of Karel Jan Bossart (who came to the US from >Belgium in 1930), and was a USAF project. Von Braun left the Army to >work for NASA at Marshall in 1960, where he led the Saturn program. > >Atlas 5 was a *much* more recent program, it even came after Atlas II. >The first Atlas 5 flight was in 2002. > >Folks who read all of the thread in question know who *actually* >busted Godwin's Law first. :-) > >-- >73 de Maggie K3XS >Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org >Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280 He probably meant the Saturn-5 which was used on the Apollo missions. If any of you were old enough to have watched TV back then, you would have seen the repeated series of failed (US Navy) Vanguard attempts to launch an orbiting package. Only, after The Jupiter-C team was allowed to launch (they had petitioned to do this for months), then the US succeeded in orbiting a satellite. Von Braun's groups main contribution was helping the US in the missile race with the USSR. The USSR imported their own German rocket experts for their program. The only folks with launch capability were the military. NASA provided the satellite and mission organization. Many of my former colleagues at JPL worked on the tracking system. My room mate (we shared an apartment on the calif. beach) worked in Orlando on the Saturn. 73, Ed - KL7UW ====================================== BP40IQ 50-MHz - 10-GHz www.kl7uw.com 144-EME: FT-847, mgf-1801, 4x-xpol-20, 185w DUBUS Magazine USA Rep dubususa(a)hotmail.com ======================================

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IC-910H + WispDDE Users
by Matt Bennett 21 Feb '07

21 Feb '07

Hi All, Does anyone use this radio and software control combination for same-band operations (like ISS)? I was curious if you were able to tune both the Main and Sub-Band frequencies within the same band and xmit/recieve like normal w/o full duplex operations. If so, what mode are you in when performing these operations (split, sat)? Thanks, Matt Bennett KF6RTB Matt Bennett KF6RTB UCISAT Communications Team Member University of California, Irvine www.ucisat.net --------------------------------- Never Miss an Email Stay connected with Yahoo! Mail on your mobile. Get started!

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censorship or lost mail
by Patrick McGrane 21 Feb '07

21 Feb '07

It appears one of my emails in reply to a snippit response has not made it through. Is This BBS censored or should I try again.? Pat N2OEQ

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Signal to Noise ratio
by John K9IJ 21 Feb '07

21 Feb '07

Well, the noise to signal ratio here has risen to the threshold of pain. I have better things to do with my (limited) time. Maybe I'll come back in a year and hope that members are talking about satellites again. Sad, very sad..... - John Rice K9IJ k9ij(a)vx5.com Long time Life Member of Amsat

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Delete key and filter TEST
by Luc Leblanc 21 Feb '07

21 Feb '07

Just to remind you my very first post subject... AMSAT-NA should not let AO-51 satellite in the hands of an army wing. As all amateur radio satellite they should be used for amateur radio operation not for any military use. For those who are discussing about a way to control satellite attitude by magnetorquing don't try to use the intelligence level from some on this BB as if we added the sum of all of this energy i think we will not have enough power to drive a RL5-W10015. I even think some a former US soldiers!!! With so many who are supposed to have their filter on on me they are apparently a bunch of liars... they probably lick the boots of their army chief to much! There is also no need to copy and copy and recopy or repost my posts. You will only added to the general confusion and mixed up as it was proven that some are actually under severe depression it will be advisable to let them relax in peace if we still want to enjoy them and their legendary stupidity. We are not born stupid and dummy we became it! Correct me if i'm wrong I hope :)) Here is some excerpt from the messages i received i start my 10 hit list but i have enough stuff to make about 10 list and some can throw you out of your socks... Viva Cuba El territorio libre en el America y Patria o muerte. (para compagneros y compagneras commentarios) 10- Can't you be little original or is that past your adult educational level which is probably first grade? 9- You poor brainwashed simple minded ignorant moron. 8- I'm an american citizen who is disappointed that Americans drafted Werner Von Braun of Nazi fame to design the atlas 5 rocket for the appollo 7- You must be some kind of government or military axe man. Funny how the ideas presented seem to be attacked with ignorant one-liners. Kind of like Planet of the apes movies 6-What's funny on this BB is many are interpreting the text with what they think silently. Probably afraid to be honest up to a point to reveal what they really think about "real questions" 5-we have issues around the world where other nations, races and bodies believe that if one will/shall all will/shall. 4-Mr Davies- I enjoy seeing posts from luc 3-I may not agree with all that Luc and others post but they have every right to express their opinions with the proviso that what they post does descend into open personal abuse. 2-Ed: You are exactly correct, I would like to apologize to you and the BB for my replies to Luc. 1- And the CIA and US Military have been acting without Conscience or impunity since 1950 - EVERY SINGLE MAJOR CONFLICT Was a result of LIES and deception for power, greed and corruption. Cha cha cha! "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Cease Fire Request (Blocking Members)
by Matt Bennett 21 Feb '07

21 Feb '07

Hi Everyone, I too wished to remain sidelined for this one, but I cannot help myself at this point. After re-reading the posts and analyzing them a little bit, I was able to identify the two sides to the ongoing argument without specifically identifying them... Side A says: 1) You should be free to express your opinion on the BB 2) Censorship or editing of posts is a violation of the Constitution 3) Communication via email has different rules than those of operating on the air Side B says: 1) Posts to the BB should follow the Amateur Code 2) Posting of an opinion without proper justification is an ignorant post 3) If you don't care for someone's opinion, just delete it What side are you on? Having trouble picking one side?? There's a good reason for that--the reason is that BOTH sides have things they can agree on, but NEITHER side recognizes it. Instead, both sides continue to argue without objective and continue to do so in a manner that is un-becoming of gentlemen and fellow amateurs all for the sake of having the last word. This shouldn't surpise anyone--we're all human, and this is what we do (myself included at times). However, if we are to find ourselves in such a situation, it is crucial that we DO NOT ignore it, but rather work toward a resolution for the sake of the parties involved and (most importantly) the AMSAT-BB community. Just for justification's sake, did anyone notice the number of recent posts from new operators and spacecraft developers? Are these emails the impression we want to give those new operators?? I implore those involved, please take this opportunity to assess this situation and cease communications on this thread. Yes, we all have a right to our opinions. Yes, these opinions should not be censored. However, we should never aim to offend with our opinions, but rather provoke the technical ingenuities and interests that have brought us all here to this BB in the first place. Thanks all. 73, Matt Bennett KF6RTB Matt Bennett KF6RTB UCISAT Communications Team Member University of California, Irvine www.ucisat.net --------------------------------- Finding fabulous fares is fun. Let Yahoo! FareChase search your favorite travel sites to find flight and hotel bargains.

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Re: censorship or lost mail
by Peter svoboda 21 Feb '07

21 Feb '07

On 20 Feb 2007 at 19:20, KA2AEV(a)aol.com wrote: Is that the only nonsense you can post? Can't you be little original or is that past your adult educational level which is probably first grade? On 19 Feb 2007 at 8:27, Joseph Trombino Jr wrote: > Sorry, but I must respectfully disagree....I belong to a couple of other > email reflectors that had a few bad apples.....continuously causing > dissention and problems with inflammatory and derogatory postings. You poor brainwashed simple minded ignorant moron. I was trying hard to not respond, but this is am important point. Everyone has freewill and the ability to act out of their own accord. Just because someone is associated with a larger group does not imply that all members of any such group condone, support or would/have carry out similar acts. Ernie Howard wrote: > You poor brainwashed simple minded ignorant moron. > > You've been watching too many left wing canadian news shows. A few unlawful > acts by several solders out of several hundred thousand.... You have more > crime in your city than that..... Should we lock you up and call you a > lawbreaker because of a few of your fellow citizens? ------------------------------------------------------ Ernie Howard, Jr W8EH Middletown, Ohio E-mail: w8eh(a)cinci.rr.com Web Page: http://home.cinci.rr.com/w8eh ------------------------------------------------------ Luc Leblanc wrote: Someone who's watching the last BB post and reactions just send me a note where he's making reference to the actual mood down the border. The situation is so trouble that many are loosing their natural social guidelines. He strongly feel that many irrational comments are a strong indicator that some are in the early stages of depression. You may be depressed if you're experiencing: * A major drop in your mood that lasts most of the day and is consistently low for two weeks or more. * A loss of interest in things you normally love to do. * Irritability at home or at work. (I added on the internet) * Grudges against people you perceive have wronged you. * A desire to avoid other people. (I added fltering their messages) * Overwhelming feelings of sadness or grief. * Unreasonable feelings of guilt. How is depression treated? Those who realize they are suffering from depression benefit from professional counseling and - possibly - medication. There is a wide range of anti- depressants on the market that have been approved in the treatment of depression. Medication does not normally "cure" depression. But it can help people get through their daily routines. As usual the first steps is to admit that we have a problem, but what will happen with those who does not want to listen prefering to discard some post on the BB? 73 Peter --------------------------------- Bored stiff? Loosen up... Download and play hundreds of games for free on Yahoo! Games.

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Re: Could we raise orbit thru magnetorque?
by Daniel Schultz 21 Feb '07

21 Feb '07

Physics 101: a magnetic dipole can only apply a torque to a satellite, it cannot apply an unbalanced force, and thus cannot accelerate the satellite in its orbit. Dan Schultz N8FGV

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70 cm pre-amp and bias T sold
by Michael Tondee 21 Feb '07

21 Feb '07

The amp and bias tee I posted for sale on the board earlier are sold. Thanks for everyone's interest. 73, Michael W4HIJ

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RS-22 Telemetry
by Paulo Pinto 20 Feb '07

20 Feb '07

I also heard RS-22 very well. I was correcting Doppler manually. Hopefully you can hear a mp3 file on this link: http://www.ct1ete.net/tcp/rs22_20_02_07.mp3 73 CT1ETE, Paulo

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Re: censorship or lost mail
by Tony Langdon (ATC) 20 Feb '07

20 Feb '07

I notice there are delays of approximately 4 hours on the list, so either it's being moderated for the time being, or there are delays on the net... > -----Original Message----- > From: Patrick McGrane [mailto:[email protected]] > Sent: Wednesday, 21 February 2007 07:58 > To: amsat-bb(a)amsat.org > Subject: [amsat-bb] censorship or lost mail > > > It appears one of my emails in reply to a snippit response > has not made it through. > > Is This BBS censored or should I try again.? > > Pat N2OEQ > > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of > the author. Not an AMSAT-NA member? Join now to support the > amateur satellite program! Subscription settings: > http://amsat.org/mailman/listinfo/amsat-bb >

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America is ugly betty
by Luc Leblanc 20 Feb '07

20 Feb '07

I am completely exceeded by about an hundred of private messages. Some are asking me to remain private others don't mention it. Remain confident the bad ones are already in the barrel... Each and every post will be answered back globally. Starting by the one who asked me on what i was sit "I think he has sat on something and it is giving him pain." I remember someone asking the same thing... i just hope it was not related to his wife or his daughter probably they never experience as much paint than the family and mothers of those pile up in one of the pictures made by AMERICAN SOLDIERS. Not to mention the Arab womens rape by american soldiers in Irak. As an hollow tentative to show down Bruce H Snyder KG4YEV reply "must be the tolerance for drinking on the job thing " Wonderfull United States" But i remain confident it is the ugly side of it the religious right who hang even to a point to strategically forgetting their 13th commandment "You shall not murder" Just a note here if you read my title "NO MILITARY COOPERATION ON AO-51" i was not referring to any army but as some invited me to comment on US army involvement in Irak. It was not the subject of my post the links are. Now for the benefits the military give us i consider it was a gift a way to help amateur radio serving in emergencies or to improve their communication skills. I am still believing they where not asking to be repaid back in any way or in any form. But some stupid folks in AMSAT-NA are again showing up their stupidness in giving up an amateurs radio apparatus to help an US army wing. WRONG DECISION in a wrong period of time where a stupid moron probably as stupid as the same ones Bruce KG4YEV refers to:(" & believe me our Canadian counterparts to the north taught me a few things about having some fun") and who are trying to mess up the whole world. Stupidity has no sex and borders. What else remain to be commented? The troll, block and delete key ones or Kevin WA6FWF stating US army rape and killings are "...stupid stunts" That's probably what's Ernie Howard W8EH refers to: (DIATRIBE - Noun. A lengthy and unsubstantiated submission or request regarding an otherwise simple matter by an ignorant author.) It is an impressive statement showing up an extremely high level of intelligence mostly inspired by a simple dictionnary... But as in any simple citrus we can always expel some juice. He got the 10 level mark when he wrote "He needs to go." That's exactly what's more than 50% of the US population wants including their own government and the rest of the world regarding the US military occupation in Irak. Why AMSAT-NA IS TAKING SIDE HERE " please be patient as we cooperate with our friends at the USAFA " Let them making their own test on their own frequencies! Here now stands the relation made by Robert Davies KI4HXT "To compare the US Air Force Academy and AMSAT to the NAZI and Ed Long WA4SWJ "between Arguing with our friends that are non-lovers of the military on this BB is like wrestling with pigs:" They dont even pay any respect to their own nation peoples that's just confirm why AMSAT-NA should not get involved with any military operations. The subject matter is highly volatile and can deteriorate... I will be on the air on any satellite available and i will try to reach any awards available without considering to prostitute myself with any military or commercial organization (As always i will follow up the gentleman agreement on the air) I still believe those who are helping any amateur group launching and building amateur satellite are doing so without any pay back retribution minding in money nor in services. As a reminder the purpose of my first post was to not get involved with any military operation using AO-51 or any other amateur radio satellite. For those who want's to discuss any other matter do it privately. Here is a definition of the word stupidity that's the base i used for this text. It is wide and not restrictive to any part of my text but can vary from context to another but he never carry any pejorative intent. STUPIDITY; Stupidity is the quality or condition of being stupid, or lacking intelligence, as opposed to being merely ignorant or uneducated. This quality can be attributed to both an individual (e.g. Penny Person is stupid) or a person's actions, words or beliefs (e.g., Penny Person's policies are stupid). The term can thus also refer to poor use of judgement, or insensitivity to nuances in a person who is otherwise intelligent. The determination of who is stupid is relatively difficult, despite attempts to measure intelligence (and thus stupidity) such as IQ tests. The adjective is also used as a general pejorative (e.g. I didn't borrow your stupid cap - go look for it yourself). What's the joke here! Kevin WA6FWF wish me "no 73 for you...." Just to let you know i already get my valentine one...it's probably "a vague sign of fraternalism" "first authentic use of 73 is in the publication The National Telegraphic Review and Operators' Guide, first published in April 1857. At that time, 73 meant "My love to you"! Succeeding issues of this publication continued to use this definition of the term. Curiously enough, some of the other numerals used then had the same definition as they have now, but within a short time, the use of 73 began to change. "In the National Telegraph Convention, the numeral was changed from the Valentine-type sentiment to a vague sign of fraternalism" "-" "How far San Jose is from Castro distric in San Francisco?" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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could we raise orbit etc.
by don 20 Feb '07

20 Feb '07

This is so on topic that it deserves to grow a life. Since both the earth and the sun have magnetic fields it may be possible, at various times depending on the relative positions of the spacecraft, earth and sun to change the spacecraft velocity by using magnetic systems. This is an interesting subject that is sure to have been discussed before, but an internet search didn't come up with much at all. Some one on the list will probably be able to point to some research on the subject. For sure it would be a slow,computation intensive endeavor but I cannot see why it, theoretically at least, cannot be done. Don ZL1THO AMSAT MEMBER 36225

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US launch vehicle history [was: Re: Godwin's law]
by Margaret Leber 20 Feb '07

20 Feb '07

From: Patrick McGrane [mailto:[email protected]] > The US brought Werner Von Braun here to the US to design rockets > which included the Atlas 5. Check your history. Von Braun worked on Redstone and Jupiter/Jupiter-C, since he was working for the Army. The original Atlas was the work of Karel Jan Bossart (who came to the US from Belgium in 1930), and was a USAF project. Von Braun left the Army to work for NASA at Marshall in 1960, where he led the Saturn program. Atlas 5 was a *much* more recent program, it even came after Atlas II. The first Atlas 5 flight was in 2002. Folks who read all of the thread in question know who *actually* busted Godwin's Law first. :-) -- 73 de Maggie K3XS Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

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Pehuensat-1 heard
by john heath 20 Feb '07

20 Feb '07

Hi chaps, Three short busrst of packet heard on the 22:30 pass here in the UK. The bird was over the mid atlantic. data bursts were too weak for MixW to dig out of the mush. 73 John G7HIA

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RS-22 (Mozhayets-4) heard
by Mineo Wakita 20 Feb '07

20 Feb '07

I heard today RS-22 at 12:58 UTC around 435.352 MHz. http://www.ne.jp/asahi/hamradio/je9pel/70220r22.wav http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=76&retURL=satel… --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: Feb 20, 2007 ---------------------------------------------

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Magnetorquing in orbit.
by Terry Carrell 20 Feb '07

20 Feb '07

Hi, If you're interested in this aspect, check out what AMSAT-ZL is doing with their KiwiSAT. http://www.kiwisat.org/science.html Check the links for more detail - and check the Flash videos on their Media page! Terry, ZL3QL AMSAT LM166

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CHU TIME SIGNAL
by Luc Leblanc 20 Feb '07

20 Feb '07

Here is a link for those who wants to keep CHU Canada from closing down in april 2007. http://inms-ienm.nrc-cnrc.gc.ca/time_services/shortwave_broadcasts_e.html "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Re: Could we raise orbit thru magnetorque?
by Marc Vermeersch 20 Feb '07

20 Feb '07

Hi Pedro, Interesting thought!! A few remarks around this: - AFAIK magnetorque-ing is being used to change orientation but not for changing orbit. I wonder what would happen in your scenario: I kind of expect the satellite to change orientation because of the impossibility of exactly opposing the poles. - I assume that magnetorque-ing is achieved by sending a current through a coil. The force on a conductor in a magnetic field is: Force = current [A] x length [m] x magnetic field [Tesla] The magnetic field of Mother Earth is about 0.00005 Tesla at the surface so a fraction of that at satellite altitude. Generating usable force looks like a challenge. -----Original Message----- From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On Behalf Of lu7abf Sent: Monday, February 19, 2007 4:48 AM To: amsat-bb(a)amsat.org Subject: [amsat-bb] Could we raise orbit thru magnetorque? In thinking on a future satellite project, this question was made. Argument is: if when satellite is in the north, a north magnetic field is applied on z plane, will satellite raise orbit ? Same but opposite on south. Considering limited energy available could this raise be significant if applied on all orbits ?. Tks for any answer or argument. lu7abf, Pedro Converso lu7abf(a)amsat.org.ar www.amsat.org.ar _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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Echo in the Middle School classroom
by Bruce Robertson 20 Feb '07

20 Feb '07

Gang: I'm putting the finishing touches on a Power Point presentation on satellites for the four gr. 6 classes in my town's Middle School this week. I'm focusing it around Echo because I hope that in a few weeks when the weather warms, we can do a demo through ole AO-51. Is there anyone who would like to do a school-demo to school-demo contact? I think they'd really enjoy that. It appears that satellites enter our curriculum in the science program of gr. 6; I expect it is the same in many other N. American jurisdictions. This provides an excellent opportunity to fulfill the educational mandate of our organization and a way cool means of seriously impressing some pre-teens :-) In addition, these classes are being asked to do poster presentations on a satellite of their choosing. I'm going to point them to amsat.org. Someone's really going to enjoy telling the amazing tale of AO-7, no? The photos collected for AO-51 make this job much easier. Perhaps the teams preparing for the launch of Delfi-C3, Kiwisat and Sumbandila will keep this in mind and try to provide media documenting their journeys to space, too. 73, Bruce VE9QRP

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Please kill this thread: Military Co-operation [Was: Wrestling with pigs]
by John Mock KD6PAG 20 Feb '07

20 Feb '07

I posted earlier on this topic hoping that it wouldn't degenerate. It has, alas. There is a saying about another unmoderated medium: USENET is the place where people keep wacking at the grease spot where a dead horse once lay... Please don't respond to flamers, it only makes matters worse. For further information on this, please 'google' the abbreviation: DNFTEC -- KD6PAG (Networking Old-Timer...)

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Re: Could we raise orbit thru magnetorque?
by lu7abf 20 Feb '07

20 Feb '07

Appreciate arguments and comments !! Perhaps some of the various satellite owners having manetorquers now in orbit could contribute with an experiment trying to pull satellite away earth while in north/south poles. A possible way to know if it works, could be watching if keps' "Decay rate" or "Mean motion" varies along time during experiment. Imagine a LEO orbit like suitsat or recent launch of many satellites from ISS could be further raised ? We could extend birds life ! Thanks to all for comments ! 73, lu7abf, Pedro Converso lu7abf(a)amsat.org.ar www.amsat.org.ar

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Mental sickness?
by Luc Leblanc 20 Feb '07

20 Feb '07

Someone who's watching the last BB post and reactions just send me a note where he's making reference to the actual mood down the border. The situation is so trouble that many are loosing their natural social guides. He strongly feel that many irrational comments are a strong indicator that some are in the early stages of depression. You may be depressed if you're experiencing: * A major drop in your mood that lasts most of the day and is consistently low for two weeks or more. * A loss of interest in things you normally love to do. * Irritability at home or at work. (I added on the internet) * Grudges against people you perceive have wronged you. * A desire to avoid other people. (I added fltering their messages) * Overwhelming feelings of sadness or grief. * Unreasonable feelings of guilt. How is depression treated? Those who realize they are suffering from depression benefit from professional counseling and - possibly - medication. There is a wide range of anti- depressants on the market that have been approved in the treatment of depression. Medication does not normally "cure" depression. But it can help people get through their daily routines. As usual the first steps is to admit that we have a problem, but what will happen with those who does not want to listen prefering to discard some post on the BB? "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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I: Monsieur Leblanc
by Francesco Grappi 20 Feb '07

20 Feb '07

Hi Bryant W2RGG/6, Well done, I agree with you. 73" Francesco IW4DVZ > -----Messaggio originale----- > Da: amsat-bb-bounces(a)amsat.org [mailto:[email protected]]Per > conto di Bryant > Inviato: lunedi 19 febbraio 2007 20.59 > A: AMSAT BB > Oggetto: [amsat-bb] Monsieur Leblanc > > > People- > > Most Hams know the way to deal with someone who is interrupting a > repeater with continuous garbage is TO IGNORE him or her. Pretty > soon they get bored and leave. > > Why is it so difficult for so many people on this bb to > understand Monsieur Leblanc is playing with you? He apparently > loves the attention and isn't reluctant to make some of the > inflammatory statements he has posted recently and in the past. > Banning him from the bb [impossible to do anyway]or "filtering" > his posts is unnecessary [you don't want to do that either > because sometimes his comments are worthwhile]. > > JUST DON'T RESPOND TO HIS IRRITATING REMARKS; IGNORE HIM. Sooner > or later he will tire of his game. > > [My apologies in advance for the rant and adding to the noise but > enough is enough.] > > Bryant, W2RGG/6 > > Amsat Member #25030 > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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The Amateur's Code
by Margaret Leber 20 Feb '07

20 Feb '07

The Radio Amateur is CONSIDERATE...never knowingly operates in such a way as to lessen the pleasure of others. LOYAL...offers loyalty, encouragement and support to other amateurs, local clubs, and the American Radio Relay League, through which Amateur Radio in the United States is represented nationally and internationally. PROGRESSIVE...with knowledge abreast of science, a well-built and efficient station and operation above reproach. FRIENDLY...slow and patient operating when requested; friendly advice and counsel to the beginner; kindly assistance, cooperation and consideration for the interests of others. These are the hallmarks of the amateur spirit. BALANCED...radio is an avocation, never interfering with duties owed to family, job, school or community. PATRIOTIC...station and skill always ready for service to country and community. --The original Amateur's Code was written by Paul M. Segal, W9EEA, in 1928.

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UO-11 reception report
by Edward Chuang 20 Feb '07

20 Feb '07

Dear Clive, Here is the reception report of UO-11 on Feb.18,2007 : QTH: PL04vq 08:51z: not heard 10:24z: not heard 22:22z: heard and recoded (Max. elev.=38 Deg.) 23:58z: heard and recoded (Max. elev.=17 Deg.) Two WAV files can be downloaded at the following URL: (both are from 22:22z pass) http://140.111.104.3/~chuangkl/ham/UO-11-20070218-30sec.WAV <http://140.111.104.3/%7Echuangkl/ham/UO-11-20070218-30sec.WAV> (good audio, size: 627 KB) http://140.111.104.3/~chuangkl/ham/UO-11-20070218-160sec.WAV <http://140.111.104.3/%7Echuangkl/ham/UO-11-20070218-30sec.WAV> (size: 3.4 MB) 73 de Edward / BX1AD -----

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Re: Godwin's law validated again
by Patrick McGrane 20 Feb '07

20 Feb '07

Hello from patrick N2OEQ, for some reason my words were taken out of context. Godwins law specifies the use of an analogy. What I posted was a publically Known fact, not an insulting analogy. The US brought Werner Von Braun here to the US to design rockets which included the Atlas 5. I suggest you go back and read my prior post in its entirety. You must be some kind of government or military axe man. Funny how the ideas presented seem to be attacked with ignorant one-liners. Kind of like Planet of the apes movies. Next time either relay the entire post or look like an ass. Take care, 73 ------- Original Message ------- >From : Michael Hatzakis Jr MD[mailto:[email protected]] Sent : 2/19/2007 10:12:35 PM To : jmario(a)fast.net; amsat-bb(a)amsat.org Cc : Subject : RE: [amsat-bb] Re: Godwin's law validated again Hilarious...! Funniest thing I've seen on this topic.. -----Original Message-----

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FW: RE: Petition to block Luc from the -bb
by Patrick McGrane 20 Feb '07

20 Feb '07

------- Original Message ------- >From : [email protected][mailto:[email protected]] Sent : 2/18/2007 12:36:49 PM To : ki4hxt(a)amsat.org Cc : amsat-bb(a)amsat.org Subject : FW: RE: [amsat-bb] Petition to block Luc from the -bb Mr Davies- I enjoy seeing posts from luc. I dont always agree with him but support to right to free expression, something many people died for to preserve. He may be wrong at times but if you are expressive, you will get it right sometimes. I'm an american citizen who is disappointed that Americans drafted Werner Von Braun of Nazi fame to design the atlas 5 rocket for the appollo missions back in the 60's so luc isnt too far off. Take your blinders off. I have no problem with patriotism but in the extreme it led to the rise of the nazis in the 30's. Take the middle road and be open minded and maybe you wont repeat the mistakes of the past. As an observation, people are getting too personal on this BB. Simply delete the mail if you dont like it. No flames please, but you have the right! pat ------- Original Message ------- >From : Robert Davies[ mailto:[email protected]] Sent : 2/15/2007 6:06:05 PM To : amsat-bb(a)amsat.org Cc : Subject : RE: [amsat-bb] Petition to block Luc from the -bb I propose that all who are tired of this individual poisoning what is otherwise a peaceful and productive environment with his abusive and slanderous posts against an organization that I for one am proud to be part of and will continue to support. Sign this petition or make it be known in some fashion that you are tired of this kind of behavior and that Luc Leblanc VE2DWE be blocked from the AMSAT and all affiliated -bb systems. To compare the US Air Force Academy and AMSAT to the NAZI V-1 and V-2 rockets is ludicrous. 1.Robert Davies -- KI4HXT EL97af Robert Davies AMSAT Area Coordinator AMSAT Member#35649 AMSAT President's Club Bronze Sustaining Donor IFC#2880 _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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New Echo functions
by Patrick McGrane 20 Feb '07

20 Feb '07

Greetings to the group! To the people who made the functional changes to the echo satellite, my sincerest Thank you! Four months is a long time to invest in a hobby project not to mention the intellectual feats involved. I read the summary and I am significantly impressed. I tip my hat to you folks. 73, pat n2oeq

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Re: My Status: KI4HLV/6Y5 {Second Attempt}
by Joe Leikhim 20 Feb '07

20 Feb '07

Ian; I hope you reconsider leaving the BB. Hopefully the insurgents will tire of this nonsense and fade away. I have spent enjoyable times in past in 6Y5 (coast to coast) and hope to work you. -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P

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70cm mast mount preamp for sale
by Michael Tondee 20 Feb '07

20 Feb '07

I have an Advanced Receiver Research 70cm mast mounted preamp, Model # MSP432VDG-160 preamp and bias T, model # DC-INJ for sale. The preamp will handle up to 160 watts of transmit power, it is RF sensed. Price of these items new is 278.95. I've had these for about a year and a half and will let them go for 195.00 including shipping. They are in perfect working order and I hate to sell them, I just have a need for the money. I will ship priority mail anywhere in the lower 48. This is a package deal and I will only ship to the U.S.. Payment is by Paypal only. Contact me off the board if interested. I hope this is alright to post here. These will be going on E-bay if not sold but I wanted to give fellow AMSAT members a shot first. Tnx and 73, Michael, W4HIJ AMSAT # 36017

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Godwin's law validated again
by jmario aka joe cassano 20 Feb '07

20 Feb '07

I was wondering how long it would take for the current hot thread to validate Godwin's law ... http://en.wikipedia.org/wiki/Godwin's_law Joe, K3FMA > Message: 1 > Date: Sun, 18 Feb 2007 09:36:49 -0800 > From: "N2OEQ(a)aceweb.com" <N2OEQ(a)aceweb.com> > Subject: [amsat-bb] Re: Petition to block Luc from the -bb > To: ki4hxt(a)amsat.org > Cc: amsat-bb(a)amsat.org > Message-ID: <2e6fc986042645dcadb2be06e3da92dd.N2OEQ(a)aceweb.com> > Content-Type: text/plain; charset=utf-8 > ..... > I'm an american citizen who is disappointed that Americans drafted Werner Von Braun of Nazi fame .....

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mental illness
by Peter svoboda 20 Feb '07

20 Feb '07

Someone who's watching the last BB post and reactions just send me a note where he's making reference to the actual mood down the border. The situation is so trouble that many are loosing their natural social guidelines. He strongly feel that many irrational comments are a strong indicator that some are in the early stages of depression. You may be depressed if you're experiencing: * A major drop in your mood that lasts most of the day and is consistently low for two weeks or more. * A loss of interest in things you normally love to do. * Irritability at home or at work. (I added on the internet) * Grudges against people you perceive have wronged you. * A desire to avoid other people. (I added fltering their messages) * Overwhelming feelings of sadness or grief. * Unreasonable feelings of guilt. How is depression treated? Those who realize they are suffering from depression benefit from professional counseling and - possibly - medication. There is a wide range of anti- depressants on the market that have been approved in the treatment of depression. Medication does not normally "cure" depression. But it can help people get through their daily routines. As usual the first steps is to admit that we have a problem, but what will happen with those who does not want to listen prefering to discard some post on the BB? "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE --------------------------------- TV dinner still cooling? Check out "Tonight's Picks" on Yahoo! TV.

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Re: Mental sickness?
by Luc Leblanc 20 Feb '07

20 Feb '07

Someone who's watching the last BB post and reactions just send me a note where he's making reference to the actual mood down the border. The situation is so trouble that many are loosing their natural social guidelines. He strongly feel that many irrational comments are a strong indicator that some are in the early stages of depression. You may be depressed if you're experiencing: * A major drop in your mood that lasts most of the day and is consistently low for two weeks or more. * A loss of interest in things you normally love to do. * Irritability at home or at work. (I added on the internet) * Grudges against people you perceive have wronged you. * A desire to avoid other people. (I added fltering their messages) * Overwhelming feelings of sadness or grief. * Unreasonable feelings of guilt. How is depression treated? Those who realize they are suffering from depression benefit from professional counseling and - possibly - medication. There is a wide range of anti- depressants on the market that have been approved in the treatment of depression. Medication does not normally "cure" depression. But it can help people get through their daily routines. As usual the first steps is to admit that we have a problem, but what will happen with those who does not want to listen prefering to discard some post on the BB? "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Monsieur Leblanc
by Bryant 20 Feb '07

20 Feb '07

People- Most Hams know the way to deal with someone who is interrupting a repeater with continuous garbage is TO IGNORE him or her. Pretty soon they get bored and leave. Why is it so difficult for so many people on this bb to understand Monsieur Leblanc is playing with you? He apparently loves the attention and isn't reluctant to make some of the inflammatory statements he has posted recently and in the past. Banning him from the bb [impossible to do anyway]or "filtering" his posts is unnecessary [you don't want to do that either because sometimes his comments are worthwhile]. JUST DON'T RESPOND TO HIS IRRITATING REMARKS; IGNORE HIM. Sooner or later he will tire of his game. [My apologies in advance for the rant and adding to the noise but enough is enough.] Bryant, W2RGG/6 Amsat Member #25030

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Re: Could we raise orbit thru magnetorque?
by G0MRF＠aol.com 20 Feb '07

20 Feb '07

In a message dated 19/02/2007 21:50:04 GMT Standard Time, lu7abf(a)amsat.org.ar writes: Argument is: if when satellite is in the north, a north magnetic field is applied on z plane, will satellite raise orbit ? Same but opposite on south. Considering limited energy available could this raise be significant if applied on all orbits ?. =================================================== Very interesting. Don't know the answer. However, if you are in the North then you need to generate a 'south pole' to repel the satellite. -Remember, the geographic north pole is a magnetic south pole- That's why the north pole of your compass points towards it. 73 David

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Genesat-1still TXing?
by john heath 20 Feb '07

20 Feb '07

Hi, Listened for Genesat-1on the 22:25 pass over the UK tonight (Monday) nothing heard. Is this one still transmitting? 73 john g7hia

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Re: Could we raise orbit thru magnetorque?
by G0MRF＠aol.com 20 Feb '07

20 Feb '07

In a message dated 19/02/2007 21:50:04 GMT Standard Time, lu7abf(a)amsat.org.ar writes: In thinking on a future satellite project, this question was made. Argument is: if when satellite is in the north, a north magnetic field is applied on z plane, will satellite raise orbit ? Same but opposite on south. Considering limited energy available could this raise be significant if applied on all orbits ?. Tks for any answer or argument. lu7abf, Pedro Converso lu7abf(a)amsat.org.ar www.amsat.org.ar Ohhhh. How do you generate a north or south 'pole' in isolation? Probably not possible so you would generate opposing forces that cancel. I realise that you can have one pole closer to the earth than the other, but given that the relative sizes makes the satellites magnet 'infinately small' in comparison to the earth I think the forces would be virtually equal and opposite. Hence magnetorquing can generate rotational forces but not 'thrusting' type forces. Sound reasonable? 73 David

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Re: Petition to block Luc from the -bb
by WILLIAMS MICHAEL 19 Feb '07

19 Feb '07

NO NO NO Actually, Luc is very enjoyable to QSO with on FO-29. I completely disagree with him about Vietnam and Iraq, but that's OK. I know where the delete key is if it is needed. Mike K9QHO 33589

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Re: My Status: KI4HLV/6Y5 {Second Attempt}
by Iain McFadyen 19 Feb '07

19 Feb '07

> > Greetings to all! > > For those that know me, you will remember me as a condo dweller in McLean > Virginia, just outside Washington DC. > > Satellite operations were virtually impossible, with just a discone on my > balcony, 140ft AGL. So, I restricted my satellite operations to Field Day, > when I helped the local club to cobble together a satellite station, to get > the bonus points and to thrill the onlookers when the Az/El mount started > stepping across the sky. > > Well, my situation has changed. I'm now back in Kingston Jamaica where I > spent three delightful years in the past (2001-2004). > > In the next few weeks, I expect to know whether this will be a long term > assignment. If it is (and I expect it to be), I shall be moving forward > quickly to build a satellite station, basically from the ground up, to > operate the existing LEOs. So I'll be activating 6Y5 on the sats shortly. > > Meanwhile, I'm unsubscribing from the BB, given the recent change of focus > of the messages. :-( > > If anyone needs/wants 6Y5 on satellite, please contact me offlist, as I'll > be unsubscribing from the BB with immediate effect. > > 73 > > Iain KI4HLV/6Y5 > Kingston, Jamaica >

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Re: NO MILITARY COOPERATION ON AO-51
by KA2AEV＠aol.com 19 Feb '07

19 Feb '07

Obviously he is just "trolling " (I believe the term is) And he knows nothing of what he puts in his signature In a message dated 2/19/2007 4:27:20 P.M. Eastern Standard Time, ve3gyq(a)amsat.org writes: Again, please seek some medical attention and stop this nonsense. By the way, your signature line reads: ""It is not the class of license the amateur holds, but the class of the amateur that holds the license." You of all people should try to understand what that means.

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Petition to block Luc from the -bb
by Robert Davies 19 Feb '07

19 Feb '07

I propose that all who are tired of this individual poisoning what is otherwise a peaceful and productive environment with his abusive and slanderous posts against an organization that I for one am proud to be part of and will continue to support. Sign this petition or make it be known in some fashion that you are tired of this kind of behavior and that Luc Leblanc VE2DWE be blocked from the AMSAT and all affiliated -bb systems. To compare the US Air Force Academy and AMSAT to the NAZI V-1 and V-2 rockets is ludicrous. 1.Robert Davies -- KI4HXT EL97af Robert Davies AMSAT Area Coordinator AMSAT Member#35649 AMSAT President's Club Bronze Sustaining Donor IFC#2880

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