- AMSAT-BB - mailman.amsat.org

Now you see it, now you don't ... the sun, that is.
by John Hackett 04 Sep '07

04 Sep '07

To whom it may concern, Please be aware that the NOVA eclipse predictions DO NOT always agree with other eclipse prediction software. This *can* account for certain discrepancies. The "trick" is to use 3 different programs and pick the "averages". 73 John. <la2qaa(a)amsat.org>

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FO-29 sked 5-20 Sep
by Mineo Wakita 04 Sep '07

04 Sep '07

Sep 5 3:35 - 5:21 - 8 4:20 - 6:10 - 9 3:27 - 5:12 - 11 3:25 - 5:07 - 12 4:12 - 6:00 - 13 3:20 - 5:03 - 14 4:07 - 15 3:15 - 4:58 - 16 4:05 - 5:50 - 17 3:10 - 4:55 - 19 3:05 - 4:50 - 20 3:55 - 5:40 - de JE9PEL, Mineo Wakita

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AO-7 report 4th Sept:
by John Hackett 04 Sep '07

04 Sep '07

Hi All, At 07:56 on orbit 50112 AO-7 was DEFINATELY in mode-A. The downlink was fluttering but this time it wasn't due to alligators. There was no-one else in the passband for the first 10 minutes of the pass over Europe. I lost the satellite behind the moutains at 85 degrees Az from QTH ... (this is where SV1BSX usually takes over). Presumably, the mode change occured sometime between 01:45 and 01:55 like the day before yesterday ... and that both the OFF and the B entry in the log for this morning are incorrect ... (see my previous mail) ... it is unlikely that the mode changed twice !!! within 1 hour ... though it *is* theoretically possible under certain circumstances. Again ... we need to monotor over time to get a fairly reasonable idea of current transponder switching. PLEASE !! do ensure the information you enter in the log is correct ... thank you, it is appreciated. 73 John. <la2qaa(a)amsat.org>

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Predicting AO-7's schedule.
by John Hackett 04 Sep '07

04 Sep '07

Hi All, It is difficult to predict or assertain the current operating schedule for AO-7. On orbit 50109 AO-7 changed from mode-B to mode-A as confirmed by K3SZH working W8IJ ... (in mode A) ... One would expect the satellite to stay in one particular mode for 24 hours .... (like yesterday)... but AJ9K logged mode-B at 02:00, as did RW3XL on orbit 50110 ... before W7LRD logged the transponderr as OFF on orbit 50111. Be aware that 'some' stations log the transponder as off either because they are not too careful with the log entries ... or ... the transponder is in fact on in mode C but they can't hear it. Two things are certain ... 1) The transponder is *NOT* behaving as one could expect. My observations are also verified by SV1BSX "further down the line" ... (later in the pass). 2) We need to observe the changes over many days to get some idea of predictability. 73 John. <la2qaa(a)amsat.org>

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ATTENTION: Domain "amsat-dl.de"
by Peter Guelzow 04 Sep '07

04 Sep '07

Hello All, I would like to point out expressly that AMSAT DL has nothing to do with current domain “www.amsat-dl.de” The domain belonged in former times to Reinhard Richter, DJ1KM and served occasionally as a mirror, when we had some server problems at that time. At expiration the domain was immediately taken over and blocked by an IT-company. A search in the Internet resulted in the fact, that the new owner was frequently known for dubious domain grabbing activities.. Again, AMSAT-DL expressly dissociate from the domain "www.amsat-dl.de” and we will also not use this domain in future.. Webmasters of other AMSAT or private homepage should make sure, that all links to AMSAT-DL are directed to http://www.amsat-dl.org Thank you, 73s Peter DB2OS

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China Says Work Under Way to Mitigate Space Junk
by Eric H. Christensen 03 Sep '07

03 Sep '07

Thought I'd pass along this article. <http://www.space.com/spacenews/070903_businessmonday_china_debris.html> 73s, Eric Christensen, W4OTN AMSAT Area Coordinator - Southeastern Virginia USA AMSAT Member 35360 http://www.ericsatcom.net Donate to the Eagle Fund - http://www.amsat-na.com/donation.php?donate=eagle GPG Key Fingerprint: 4675 2BBE 666B 8FF7 A9A1 4D00 67F2 1E7A B685 F578

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AO-7 POWER-mongers.
by John Hackett 03 Sep '07

03 Sep '07

Hi All, Snipped from Dave's WB6LLO post re: power-mongers on AO-7. >BUT.....some dork running tons of power managed to overpower us at every >attempt...deliberately??? or otherwise... >First time I've had that happen in over 27 years of satellite >operation...where do these guys come from?? We really do need to nip these guys in the .... err ... (bud) ... and teach them it's *NOT* like AO-51 where the "mine's bigger than yours" mentality prevails ... (he means FM "capture effect, folks). There are recommended operating proceedure notes on the AO-7 Resource Page, lets encourage the potential newcomers to linear transponders to *READ* them. 25 watts *EIRP* is more than enough to work AO-7 ... PROVIDED ONE USES AN AERIAL and has a pair of those wierd things attached to the side of your head ... (ears) !!!. To the "unsure" ... pleeeeeeeeeeeeeeese read this ... <http://www.observations.biz/Observations_from_Norway/howmuchpowerisenough.h…> 73 John. <la2qaa(a)amsat.org>

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Southern Californians - Events!
by Clint Bradford 03 Sep '07

03 Sep '07

Don’t forget to support HAMCON in Torrance September 7-9, and the Amateur Radio Expo weekends during the Los Angeles County Fair this month! AMSAT has a booth at HAMCON - stop by and say hello. In addition, I’ll be presenting “Working AO-51 with your HT” at the Long Beach Amateur Radio Club meeting on Friday night at 7pm at the conference hotel. If you're available, I would welcome your experienced comments and critiques on the presentation. It is aimed (obviously) as those new to amateur satellites... Additionally, AMSAT wll have a booth at the LA Co. Fair in the Amateur Radio Expo! I need more volunteers for the AMSAT booth, and we also need amateurs to assist with the rest of our 300' total of amateur radio booth space! The Amateur Radio Expo runs Fri-Sun throughout the fair. OF COURSE I have parking passes and tickets for those helping with the AMSAT booth! Here is the tentative schedule for the AMSAT booth: 09/07 - Fair opening to lunch - AMSAT 09/08 - All day - AMSAT 09/09 - Minimum 2nd half of day - AMSAT, to closing 09/14 - TBD 09/15 - All day - AMSAT 09/16 - Minimum 2nd half of day - AMSAT, to closing 09/21 - TBD 09/22 - TBD 09/23 - All day - AMSAT 09/28 - NOT AVAILABLE 09/29 - NOT AVAILABLE 09/30 - All day - AMSAT Email me asap for additional details. http://www.hamcon.org http://www.amateurradioexpo.org Clint Bradford, K6LCS AMSAT Area Coordinator 909-241-7666

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AO-7, frequencies
by Dave Guimont 03 Sep '07

03 Sep '07

I don't remember who asked the question, but I got on AO7 tonite ~1255z 3 sep 07 to ascertain the frequencies. Someone made the comment that they were quite far from the posted. Not true....Accounting for doppler, of course, they are amazingly close to what they were when I first got on in 1980, and what they were in 2004 when it "came back to life".....I haven't been on for months so thought I would respond to his question...Nominal 432.150(lsb) up, 145.950(usb) up...... It took amazingly little power, I estimate about 3 watts , up the pipe, from my ICOM 910. (as low as I can crank the output!).... And I thank those that answered, but could not get ANY callsigns for certain, tho I heard my own callsign clearly, to confirm the frequencies, and I thank them...for their response.. BUT.....some dork running tons of power managed to overpower us at every attempt...deliberately??? or otherwise... First time I've had that happen in over 27 years of satellite operation...where do these guys come from?? 73, Dave wb6llo(a)amsat.org Disagree: I learn.... Pulling for P3E...

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AO-51 September schedule
by Andrew Glasbrenner 03 Sep '07

03 Sep '07

Hello all, I posted the new schedule to http://www.amsat.org/amsat-new/echo/CTNews.php Saturday morning. I apologize for it not being uploaded earlier. Thanks to the AO-51 committee for another great balance of modes this schedule. Now for some notes on the satellite. We are currently running 370 mW on TXA (435.150) and 630 mW on TXB (435.300). Power levels will continue to increase as eclipses get shorter, leading up to 10 weeks of continuous sun early next year. These are going to be interesting times. Keep in mind that anytime we have something other than telemetry running on TXA (i.e. L/U repeater), we may have to interrupt it occasionally for telemetry and satellite maintenance. Our lead command station, Gould WA4SXM, has been doing an outstanding job of squeezing every last drop of power for the downlinks. Enjoy the satellite, and remember it's never too early to submit your mode requests for October to ao51-modes(a)amsat.org . 73, Drew KO4MA AMSAT-NA VP Ops September 2007 AO-51 (AMSAT Echo) Schedule September 1 until September 30, subject to modification September 1 - September 10 FM Repeater, V/U Uplink: 145.920 MHz FM, No PL Tone Downlink: 435.300 MHz FM 9k6 Digital, V/U, Telemetry Only Downlink: 435.150 MHz FM, 9k6 Telemetry September 10 - September 14 FM Repeater, L/S Uplink: 1268.700 MHz FM, No PL Tone Downlink: 2401.200 MHz FM September 14 - September 17 FM Repeater, V/U Uplink: 145.920 MHz FM, No PL Tone Downlink: 435.300 MHz FM 9k6 Digital, V/U, Telemetry Only Downlink: 435.150 MHz FM, 9k6 Telemetry September 17 - September 21 SSB/FM Repeater, V/U Uplink: 145.880 MHz USB Downlink: 435.300 MHz FM 9k6 Digital, V/U, Telemetry Only Downlink: 435.150 MHz FM, 9k6 Telemetry September 21 - October 1 FM Repeater, V/U Uplink: 145.920 MHz FM, No PL Tone Downlink: 435.300 MHz FM FM Repeater, L/U (subject to interuption for satellite maintenance) Uplink: 1268.700 MHz FM, No PL Tone Downlink: 435.150 MHz FM

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Wanted.... Rohn BPL45G
by Stargate 03 Sep '07

03 Sep '07

Hi all, I'm looking for a Rohn BPL45G flat top adaptor with or without thrust bearing for 45G tower. I had a deal working on one, but it fell through. If anyone has one to sell/trade, please contact me at.... sad.tip(a)verizon.net P.S. Sorry for all the cross posting, and it might be a bit OT for some of the groups, but I can't seem to find one locally. Thanks, RoD KD0XX A good friend will come and bail you out of jail, A TRUE friend will be sitting next to you saying..... "DAMN THAT WAS FUN"

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Re: doppler.
by k1uxbma＠comcast.net 02 Sep '07

02 Sep '07

Hello all. My husband Nick (K1UXB) passed away last February 3, 2007. He had been a Ham operator since age 15. He was 71 when he passed. Do you know anyone in Massachusetts (I am in Medford) that needs equipment ? I can send you Model #'s etc. He also has lots of huge antennas here at the house. Please call if you or anyone you know is interested. He would appreciate the equipment being put to good use. Sincerely, Alice (781) 395-4509 Please forward this e-mail to contact anyone who would be interested. Thanks. -------------- Original message -------------- From: "John Hackett" <archie.hackett(a)hotmail.com> > Hi All, > Re: doppler. I've attached K4GMJ's article from the August 1992 > issue of Oscar News. It may be of interest to those, like me, who still use > old equipment. > > In addition to Maury's notes, I can mention, I have used an NE 567 tone > decoder IC and a LED as the visual receiver with a simple twin-T audio > oscillator for the transmitted signal. > A simple twin-T osc: is better than an NE555 in this application. > > I still operate with the Yaesu 290/790 pair + associated homebrew aerials > and amps (over 20 years now) and manage quite nicely on VO-52 with > InstantTUNE. When set up correctly, the signals track perfectly so even with > "old" equipment it's still possible to adhere to THE ONE TRUE RULE regarding > doppler. > > I don't tune at all for doppler on AO-7. > > Occasionally, just for fun, I tune manually ... (transmitter and receiver) > .... to keep the frequency constant at the satellite, however ... be aware > .... it is *NOT* mandatory to keep the signal fixed at the satellite. Many > operators still use the manual convention of tuning the highest frequency > .... (because it has the highest doppler rate). > > This is perfectly acceptable because not everybody is either 1) affluent > enough to be able to afford the latest all singing, all dancing multimode > rig ... or 2) not experienced enough to cope with doppler on the uplink and > the downlink at the same time. > > 73 John. >

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Polarization Switcher
by i8cvs 02 Sep '07

02 Sep '07

Hi Joe, KC2TN My answere to you about the polarization switcher was rejected by comcast.net Send me please another email address 73" de i8CVS Domenico

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Re: doppler.
by John Hackett 02 Sep '07

02 Sep '07

Hi All, Re: doppler. I've attached K4GMJ's article from the August 1992 issue of Oscar News. It may be of interest to those, like me, who still use old equipment. In addition to Maury's notes, I can mention, I have used an NE 567 tone decoder IC and a LED as the visual receiver with a simple twin-T audio oscillator for the transmitted signal. A simple twin-T osc: is better than an NE555 in this application. I still operate with the Yaesu 290/790 pair + associated homebrew aerials and amps (over 20 years now) and manage quite nicely on VO-52 with InstantTUNE. When set up correctly, the signals track perfectly so even with "old" equipment it's still possible to adhere to THE ONE TRUE RULE regarding doppler. I don't tune at all for doppler on AO-7. Occasionally, just for fun, I tune manually ... (transmitter and receiver) .... to keep the frequency constant at the satellite, however ... be aware .... it is *NOT* mandatory to keep the signal fixed at the satellite. Many operators still use the manual convention of tuning the highest frequency .... (because it has the highest doppler rate). This is perfectly acceptable because not everybody is either 1) affluent enough to be able to afford the latest all singing, all dancing multimode rig ... or 2) not experienced enough to cope with doppler on the uplink and the downlink at the same time. 73 John. <la2qaa(a)amsat.org>

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Re: AO-7
by John Hackett 02 Sep '07

02 Sep '07

Mak, We're on the same page ... those were EXACTLY my thoughts too. I'm fully expecting "you know who" to jump in later today and say ... I TOLD YOU SO ... but until I posted my mails from Jan King last week, those two individuals didn't have all the facts ... and probably believed the information in the 1974 Amsat newsletter ... (which as we now know, was NOT correct). Like you say, it will be VERY interesting to see what happens regarding AO-7 modes in the next few days. I hope you don't mind me posting your comments on the Amsat-bb ... I believe your observation is VERY important in understanding the randomness of the switching circuitry. GM1SXX and I have another theory but it's a bit too soon to get flamed! for this, we need to wait until after Christmas to make it an even 4 years. NB. Both GM1SXX and myself have ALWAYS maintained that there is some !!! battery power ... but not enough to operate the transponders ... we collected VALID data in 2005/6 ... that would explain your observation Mak. I'll rope Joe in ... (kicking and screaming!) ... so that we have monitors in K3, LA and SV so we can see how things progress. I checked with QRZ.COM before publishing your e-mail address. 73 John. <la2qaa(a)amsat.org> ........................................................................................................................................ >From: "SV1BSX" <sv1bsx(a)yahoo.gr> >To: <la2qaa(a)amsat.org> >Subject: AO-7 >Date: Sun, 2 Sep 2007 11:38:48 +0300 > > Good morning John, > > well I am wake from early morning today and I noticed that (after K3SZH >Email) AO-7 is in Mode-A, >almost permantly for the last 4 orbits (#50076-9). > > I'm not 100% sure about 50077 orbit, I missed that, but the last 2 >(#50078 & 9) is glued to Mode-A. >Unusual because as I was looking just now on NOVA, between 07:21 - 07:24 >UTC AO-7 was into a short eclipse period, >without any changing in Mode. > > He he.... it should be funny to stay for a couple of days "glued" to >Mode-A. > >Have a nice Sunday > >73, Mak

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Mode-A
by John Hackett 02 Sep '07

02 Sep '07

Hi All, I confirm AO-7 was in mode-A on orbit 50087 today, Sunday 02-09-07. The two stations eagerly waiting in the wings to jump out and say ... 'I told you so' ... relax !, I've got it ... ONE OF LA2QAA's EARLIER ASSUMTIONS WAS WRONG ... an actual human error no less. Signals this morning were "weak & watery" ... (I heard nobody else in the passband). It will be interesting to see if the activity is almost zero in mode-A vis-a-vis mode-B as it has been on previous occasions. After the "referendum" ... (G1WPR and K3SZH and one other station took the trouble to reply) ... the AO-7 log will remain unchanged. Like the other station said, everybody can see who fills out the log incorrectly. 73 John. <la2qaa(a)amsat.org>

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FO-29 CW telem 2007-09-01 15:19Z
by Bruce Robertson 02 Sep '07

02 Sep '07

I found the bird much louder last night than the night before, when I was unable to copy telem. On that occasion, the beacon power might have been compressed by rogue FM signals on the transponder. I assume that since the tx power is stated as around 0.8W, the beacon is running 80mW, about the same as some cubesats. HI HI 22 E2 88 D5 8F BB 05 25 00 24 00 00 6F 65 9A 9D B0 80 B7 B6 B7 B5 BA HI HI 22 2E 88 D5 8F BB 05 25 00 24 00 00 6F 65 9A 9D B1 91 B7 B6 B6 B4 BA HI HI 22 E2 88 D5 8F BB 05 25 00 24 00 00 6E 65 9A 9D B0 88 B7 B6 B6 B5 BA HI HI 22 E2 88 D5 8F BB 05 25 00 24 00 00 6C 65 9A 9D B0 80 B7 B6 B6 B4 B9 DATA 1 Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode TRIC Battery Logic TRIC : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 0.0 [nT] GAS-X 0.0 [nT] Solar Panel Current 1088.2 [mA] Battery Current -20.4 [mA] Battery Voltage 16.6 [V] Battery Middle Voltage 7.6 [V] Bus Voltage 17.3 [V] Analog Tx Power 733.9 [mW] Structure Temp. 1 10.8 [C] Structure Temp. 2 11.2 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 11.6 [C] Battery Cell Temp. 9.6 [C] It is interesting to see the solar panel current decrease as the bird moves toward eclipse. (I assume since this is a sphere that these changes represent represent real alterations in irradiation, not the effects of tumble, but I'd be happy to be corrected on this point.) Solar Panel Current (# 50mA) ( Data 1 ) 1088.2[mA] : ###################### ( Data 2 ) 1088.2[mA] : ###################### ( Data 3 ) 1078.4[mA] : ###################### ( Data 4 ) 1058.8[mA] : ##################### Unfortunately, I decided to see if anyone was active on the transponder and missed the frames of telemetry that came during and after eclipse. Thanks to JE9PEL, Mineo, for his excellent telemetry analysis program. 73, Bruce VE9QRP

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AO7 info
by k3szh＠netzero.net 02 Sep '07

02 Sep '07

Hi all At 1:56 utc AO7 was in mode "A" my signal was 5/8 to S9 ,just heads up. Joe K3SZH AMSAT 3788

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AO7 question
by tjjapha＠earthlink.net 02 Sep '07

02 Sep '07

I must have missed something! AO7 is a great bird despite all the FMing, but one thing puzzles me: the rx freq. is always WAY off the calculated freq. based on the translation between the bands. Isn't it supposed to be 145.950 down for 432.150 up, and inversely related (145.948=432.152, etc.)? If it is, it isn't that in reality! What's the real deal? IOf course it's all +/- doppler, but early in the pass, my doppler shift is below the nominal freq. Yikes! Tnx & 73, Tony, N2U

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Re: VO-52
by Andrew Glasbrenner 01 Sep '07

01 Sep '07

Excellent advice Tom. Let me add a few things if you don't mind. If you cannot implement full doppler computer tuning, the next best practice is to tune the higher frequency, in this case the uplink. Use full duplex and the minimum power required. VO-52 is quite sensitive and overloads easily; expect this to be the norm on FD. Don't forget AO-7. It could be in either Mode U/V (aka Mode B) or Mode V/A (aka Mode A). FO-29 may also be back in time for FD, we just don't know. I expect the majority of points to be made on the transponder satellites; please observe the one QSO per FM repeater rule (1 via AO-27 and SO-50, and 1 each via the L/U and V/U repeaters on AO-51). For the true diehard satellite operator there is AO-16! The 1200 baud BPSK downlink is easily decoded with MixW soundcard software, and the uplink requires Manchester FSK at 1200 baud. This is the tough part. QSOs can be completed via digipeating through the satellite, but the BBS is non-operative. GO-32 is a good bet too if the BBS is up and running. Good Luck on Field Day! 73, Drew KO4MA AMSAT-NA VP Operations -----Original Message----- >From: Thomas McDaniel <tmcdanielsprint(a)earthlink.net> >Sent: Jun 3, 2007 8:44 PM >To: kc6uqh <kc6uqh(a)cox.net>, AMSAT-BB <amsat-bb(a)amsat.org> >Subject: [amsat-bb] Re: VO-52 > >Hi Art, > >I don't know of a site for this satellite with operating information. >However, this is what used to be called a Mode B satellite -- 70 CM LSB >uplink and 2 Mtrs USB downlink with a reverse transponder. Because the >satellite is in a very low orbit I highly recommend a computer controlled >transceiver (FT-847, IC-910, TS-2000 or etc.) and SatPC32 (you can get a >free download to test with from Eric's web site: >http://www.dk1tb.de/indexeng.htm ). We generally use the "one true rule," >that is computer control both up and down link to stay in one spot on the >transponder. > >For antennas, we will be using RH circular beams and automatic tracking, but >I expect you could use an Arrow type antenna with someone manually pointing >in the general direction -- turnstiles, egg beaters or other omnis may work >ok but I haven't tried them. > >Finally, practice before Field Day to "work out the bugs" is highly >recommended. :-) > >73 Tom n0ntx >AMSAT Area Coordinator >Colorado Springs, CO > >----- Original Message ----- >From: "kc6uqh" <kc6uqh(a)cox.net> >To: "AMSAT-BB" <amsat-bb(a)amsat.org> >Sent: Sunday, June 03, 2007 12:45 PM >Subject: [amsat-bb] VO-52 > > >>I am considering using VO-52 for Field Day. Could anyone direct me to a >>site with operating information, not bragg tapes on this satellite. I >>found the Indian site but I could not find any real technical information. >>The AMSAT frequency guide mentions both Indain and Dutch transponders shows >>only one set of frequencies and no suggestion as to USB tX or RX does >>indicate U TX and V receive. Uses turnstile antennas, Rh or Lh Circular? >> >> Thanks, >> Art, >> KC6UQH >> _______________________________________________ >> 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 >> >> >> -- >> No virus found in this incoming message. >> Checked by AVG Free Edition. >> Version: 7.5.472 / Virus Database: 269.8.7/830 - Release Date: 6/3/2007 >> 12:47 PM >> >> > >_______________________________________________ >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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TIME TO VOTE
by Martha 01 Sep '07

01 Sep '07

THIS IS A REMINDER FOR ALL AMSAT MEMBERS WHO HAVE NOT RETURNED THEIR BALLOT. THIS IS YOUR CHANCE TO "VOICE YOUR CHOICE". LET'S US KNOW WHO YOU WANT TO REPRESENT YOU ON THE AMSAT BOARD OF DIRECTORS. IT IS NOT TOO LATE TO ASK THE CANDIDATES QUESTIONS. BALLOTS MUST BE RECEIVED IN SILVER SPRING BY SEPT.15TH -- 73- Martha

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4U1UN
by Alvaro de Leon Romo 01 Sep '07

01 Sep '07

This is a copy of the 50 MHZ propagation logger, I hope some day we can hear to the 4U1UN in satellite :-) Aug25 18:16 4U1UN(SSB) 50.125 FN30>FM29 tropo United Nations HQ - WA3WUL (FM29) GL to all Al XE2AT _________________________________________________________________ Prueba Live.com- Tu página persoanlizada con todas las cosas que te interesan en un solo lugar. http://www.live.com/getstarted

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OSCAR-11 Report
by Clive Wallis 31 Aug '07

31 Aug '07

OSCAR-11 REPORT 31 August 2007 During the period 15 July to 31 August 2007, The satellite has remained silent. Eclipses finished on 20 August. Previous observations indicated that anytime after 10 August there would have been sufficient solar power to support continuous operation. Owing to the lack of accurate timings, it is impossible to predict when sustained beacon operation will restart, although this is expected any day now. When the beacon starts it is expected to operate 10 days ON followed by 10 days OFF. The satellite is now in continuous sunlight, and this will continue until 14 November, when a short eclipse season starts. I have received one reception report, from Jim G3WGM, who heard weak signals at the end of a pass on 01 August. Many thanks JIM. The Beacon frequencies are - VHF 145.826 MHz. AFSK FM ASCII Telemetry UHF 435.025 MHz. OFF S-band 2401.5 MHz. OFF Listeners to OSCAR-11 may be interested in visiting my website. The current monthly bulletin contains further details of the satellite's status. If you need to know what OSCAR-11 should sound like, there is a short audio clip for you to hear. The website contains an archive of news & telemetry data. It also contains details about using a soundcard or hardware demodulators for data capture. There is software for capturing data, and decoding ASCII telemetry. The URL is www.users.zetnet.co.uk/clivew/ If you place this bulletin on a terrestrial packet network, please use the bulletin identifier $BID:U2RPT136.CWV, to prevent duplication. 73 Clive G3CWV xxxxx(a)amsat.org (please replace xxxxx by g3cwv)

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According to the King.
by John Hackett 31 Aug '07

31 Aug '07

For the AO-7 afficiondos. Please peruse the following link ... <http://observations.biz/AO7_Paper/> ... it should serve to clear up any misunderstandings regarding any comments I have made in the past re: AO-7. Thanks to GM1SXX for the donkey work ... (By yon bonny banks and by yon bonnie 'brays') ??. 73 John. <la2qaa(a)amsat.org>

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Re: ARRL SW Division HAMCON AMSAT Booth
by Clint Bradford 31 Aug '07

31 Aug '07

And for those attending HAMCOM, I'll be presenting my 'Work AO-51 with your HT' session at the 7pm meeting of the Long Beach ham club at the event's hotel. All are invited! Clint, K6 LCS 909-241-7666 ----------------------- Sent from my Treo(r) smartphone -----Original Message----- From: Jim Jerzycke <kq6ea(a)pacbell.net> Date: Thursday, Aug 30, 2007 8:44 pm Subject: ARRL SW Division HAMCON AMSAT Booth To: Clint Bradford <clintbrad4d(a)earthlink.net>, amsat-bb(a)amsat.org And for those that are planning on attending The ARRL HAMCON in Torrance at the Mariott the weekend of September 7th, 8th, and 9th, Duane Naugle, KO6BT, and I will be manning the AMSAT booth!

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Los Angeles County Fair - AMSAT Booth
by Clint Bradford 31 Aug '07

31 Aug '07

AMSAT will make its presence known at the Amateur Radio Expo area of the LA County Fair this year! I'll be manning an AMSAT booth all day on September 8, 15, 23, and 30. If you are available to help out for a few hours, I can get you a parking pass and Fair entrance ticket! Call or send email asap. Clint Bradford, K6LCS AMSAT Area Coordinator 909-241-7666

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NASA Safety Review Finds No Evidence of Improper Alcohol Use by Astronauts Before Space Flight
by Keith E. Brandt, M.D. 30 Aug '07

30 Aug '07

From: NASA News <hqnews(a)mediaservices.nasa.gov> To: NASA News <hqnews(a)mediaservices.nasa.gov> Date: Wed Aug 29 13:50:00 EDT 2007 Subject: NASA Safety Review Finds No Evidence of Improper Alcohol Use by Astronauts Before Space Flight Aug. 29. 2007 David Mould/Michael Cabbage Headquarters, Washington 202-358-1600 david.r.mould(a)nasa.gov, mcabbage(a)nasa.gov RELEASE: 07-184 NASA SAFETY REVIEW FINDS NO EVIDENCE OF IMPROPER ALCOHOL USE BY ASTRONAUTS BEFORE SPACE FLIGHT WASHINGTON -- A NASA safety review released Wednesday found no evidence to support claims that astronauts were impaired by alcohol when they flew in space. NASA chief of Safety and Mission Assurance Bryan O'Connor conducted the monthlong review to evaluate allegations included in the Astronaut Health Care System Review Committee's report, which was released in late July. "I have said many times during the past weeks that NASA takes these allegations very seriously -- just as we would any issues that could impact the safety of our missions," NASA Administrator Michael Griffin told a news conference at NASA Headquarters. "But at the same time, I also have said that the stories cited in the report seem improbable to those of us familiar with the astronauts' rigorous and very public activities during the hours leading up to a space flight." O'Connor's review covered the past 20 years of space flight and includes: approximately 90 interviews with participants and witnesses to the last few days before shuttle and Soyuz launches, including current and former astronauts, flight surgeons, research and operations support nurses, shuttle suite technicians, closeout crew technicians and the managers and staff of crew quarters, including managers familiar with the crew quarters in Kazakhstan; a review of more than 40,000 records dating back to 1984, including mishap and close call reports, anonymous safety reports, safety hotline reports and disciplinary actions involving alcohol and drugs. These records cover 94 shuttle missions and 10 Soyuz missions; a review of relevant policies, procedures and near-launch timelines and staffing; and an inspection of crew quarters at Johnson Space Center in Houston and the Kennedy Space Center in Florida. O'Connor interviewed almost 80 percent of active astronauts and all current operational flight surgeons. None of them corroborated allegations of preflight alcohol use or claims that management disregarded flight surgeon concerns about alcohol impairment and astronauts' fitness to fly. "My review represents a good deal more investigation than normally would be done in response to an anonymous safety concern," O'Connor said. "As a result, I am confident there are enough safeguards in place to prevent an impaired crewmember from being strapped into a spacecraft." NASA is moving forward with a wide range of improvements based on other recommendations from the Astronaut Health Care System Review Committee's report. Working with members of the astronaut corps, NASA is developing a formal astronaut code of conduct, or "Expected Astronaut Principles of Behavior," which will be a document that outlines expectations. The agency's medical managers also are studying how changes and initiatives advocated by the committee would fit into NASA health care procedures in a way that improves their effectiveness. And NASA has accepted recommendations concerning the analysis and use of behavioral health data to improve astronaut selection criteria. NASA will convene expert working groups to advise the agency on possible changes to its psychological testing. Additional training for flight surgeons in behavioral health assessments is planned, and evaluations will be added to annual flight physicals for all astronauts. Continuity of care in NASA clinics will be evaluated. The agency will ensure better clinical communication through regular meetings between behavioral health providers and flight surgeons. In addition, NASA plans to improve procedures and instructions used in the administration of health care services for its behavioral health clinic. Briefings by flight surgeons to crewmembers are being re-emphasized to ensure astronauts fully understand the nature and purpose of all health-related testing and data collection. Senior NASA leaders also are holding meetings with flight surgeons and astronauts to ensure they understand the multiple pathways to communicate safety and health concerns. To view O'Connor's report, along with a transcript and video of Wednesday's news conference, visit: http://www.nasa.gov/audience/formedia/features/astronautreport.html -end- To subscribe to the list, send a message to: hqnews-subscribe(a)mediaservices.nasa.gov To remove your address from the list, send a message to: hqnews-unsubscribe(a)mediaservices.nasa.gov

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Re: Satellite IOTA Award
by Eric H Christensen 30 Aug '07

30 Aug '07

Since posting this message on the 27th of August, I have received six comments on my blog entry. All six were in support of creating a Satellite IOTA award. I appreciate those that have taken the time to leave the comments however I'd really like to go to the IOTA board with more comments. I will start drafting a letter this weekend to send to the IOTA board on Monday. If you had planned on submitting a response and hadn't had the time or forgot to do so, please take a few minutes and leave a comment. The blog can been seen at <http://eric-sparks.blogspot.com/2007/08/official-iota-satellite-award-petit…>. 73s, Eric Christensen, W4OTN AMSAT Area Coordinator - Southeastern Virginia USA AMSAT Member 35360 http://www.ericsatcom.net Donate to the Eagle Fund - http://www.amsat-na.com/donation.php?donate=eagle GPG Key Fingerprint: 4675 2BBE 666B 8FF7 A9A1 4D00 67F2 1E7A B685 F578 >I have received quite a few responses to my earlier message. What I'd >like to do is to publicly document people's comments (like the FCC does >before they change anything) on the web so it won't be just me showing >interest. > >I created a blog entry for this petition. If you would, please go to >the entry ><http://eric-sparks.blogspot.com/2007/08/official-iota-satellite-award-petit… >.html> >and leave a comment there stating whether or not you support such a >action. Please sign it with your name and callsign. > >The comments are moderated but I promise to publish each and every one >of them (so long as they don't contain obscenities, or they aren't >fishing to get an argument started). > >I appreciate it! > >73s, >Eric Christensen, W4OTN >AMSAT Area Coordinator - Southeastern Virginia USA >AMSAT Member 35360 >http://www.ericsatcom.net > >Donate to the Eagle Fund - http://www.amsat-na.com/donation.php?donate=eagle > >GPG Key Fingerprint: 4675 2BBE 666B 8FF7 A9A1 4D00 67F2 1E7A B685 F578 > > > >Eric H Christensen wrote: >> I've been considering petitioning the IOTA board to make a special award for >IOTA contacts made via satellite. Right now their rules >(http://www.rsgbiota.org/rules/rules.pdf, Para C.3.10) do not allow satellite >contacts for any award. >> >> Are there others here that would support such a petition? >> >> 73s, >> Eric W4OTN >> _______________________________________________ >> 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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Re: Satellite IOTA Award
by Eric H Christensen 30 Aug '07

30 Aug '07

>I have received quite a few responses to my earlier message. What I'd >like to do is to publicly document people's comments (like the FCC does >before they change anything) on the web so it won't be just me showing >interest. > >I created a blog entry for this petition. If you would, please go to >the entry ><http://eric-sparks.blogspot.com/2007/08/official-iota-satellite-award-petit… >.html> >and leave a comment there stating whether or not you support such a >action. Please sign it with your name and callsign. > >The comments are moderated but I promise to publish each and every one >of them (so long as they don't contain obscenities, or they aren't >fishing to get an argument started). > >I appreciate it! > >73s, >Eric Christensen, W4OTN >AMSAT Area Coordinator - Southeastern Virginia USA >AMSAT Member 35360 >http://www.ericsatcom.net > >Donate to the Eagle Fund - http://www.amsat-na.com/donation.php?donate=eagle > >GPG Key Fingerprint: 4675 2BBE 666B 8FF7 A9A1 4D00 67F2 1E7A B685 F578 > > > >Eric H Christensen wrote: >> I've been considering petitioning the IOTA board to make a special award for >IOTA contacts made via satellite. Right now their rules >(http://www.rsgbiota.org/rules/rules.pdf, Para C.3.10) do not allow satellite >contacts for any award. >> >> Are there others here that would support such a petition? >> >> 73s, >> Eric W4OTN >> _______________________________________________ >> 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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Dragonfly - An Amateur Radio Solar Sail Cubesat Project
by Trevor 30 Aug '07

30 Aug '07

AMSAT-F have put quite a bit of information about Dragonfly on the web. I wish them well with this project - Solar Sails would be a great way to propel Amateur spacercraft in the future. See http://www.southgatearc.org/news/august2007/dragonfly.htm 73 Trevor M5AKA --------------- Daily Amateur Radio RSS News: http://www.southgatearc.org/ Email your news items to: editor at southgatearc.org News On Your Website: http://www.southgatearc.org/rss/index.htm News On Your PC: http://www.southgatearc.org/rss/newsreader.htm Upload Your News: http://www.southgatearc.org/news/your_news.htm --------------- ___________________________________________________________ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/

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SD - NE - KS Grid Expedition
by Gary "Joe" Mayfield 30 Aug '07

30 Aug '07

I think I know the answer to this question, but I thought I would run it by the group. I am planning a trip to Kansas this weekend to see my father. I hope to activate a few grids along the way. I can basically take two routes. Route One will take me through EN-14, 13, 12, 11, 10 and then EM-19, 18 Route Two will take me through EN-14, 04, 03, 02, 01, 00 and then EM-09, 08, 18 I live in EN-14 and my father is in EM-18. If you would like to see me operate from any of these grids in particular this Saturday please email me. My current plan is to return later during the week. I could possibly be talked into operating on the return trip as well. I will be traveling with my trusty FT-470 and Arrow antenna combination. 73, Joe kk0sd

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Rad items data list Bark1009
by Kevin Forbes 29 Aug '07

29 Aug '07

Hello folks, I thought I would share this information with you all. My apologies if it is well known or mentioned previously. I prepared the following instructions on how to obtain a list of most items containing radioisotopes used by the military of the west. If anyone has any information regarding eastern items of this ilk, I would be most interested in. I use this list to help scour eBay for treasure. No doubt after I show this on several lists, I will have some competition. Good, I've met some nice and knowledgeable folks while doing so, and made a few friends. I think I should prepare a page on my website that serves as an index to such things for westerners. Thoughts?? Please enjoy Bark1009. --------------------------------------------------------- Dutch Ministry of Defense Publications. At this site you will find information regarding radioactive valves and tubes, Their radionuclide and the activity, (NSN) Nato Stock Number and purpose of the device. This site is of course in Dutch. Go to the URL, http://mpbundels.mindef.nl/ On the left are some blue links. MP 10-serie MP 35-serie MP 40-serie MP 43-serie MP 51-serie IF Bark 1009 Click on, IF Bark 1009 Then click on section 2.2 overzicht kernmaterieel, this will drop you down the page a bit to section 2.2. To get the actual list index. 2.2 Overzicht kernmaterieel Dit overzicht is hier apart opgenomen. Click on the word, 'hier' The page below is the index for the rad information list. http://mpbundels.mindef.nl/overig/Bark1009/22_overzicht_kernmaterieel.htm It lists 4 pages of data. Deel 1 Deze loopt tot NSN 5800 Deel 2 NSN 5800 tot 5960-00-500 Deel 3 NSN 5960-00-500 tot 6350 Deel 4 NSN 6350 en verder These 4 pages should be copied and saved. They may not always be available on the internet. Below is an example of information from these pages. 5960-00-188-3533 x KM Electronenbuis 1B24 (CV725),IB24A (CV3548) TR tube, Westinghouse Ra-226 74 5960-00-188-3534 x KLu KM Electronenbuis 1B63A (CV2826) p/n 7R5650-005-82, TR tube, Microwave Ass. Co-60 18.5 CPN4, MPN11 5960-00-188-3534 x KLu KM Electronenbuis 1B63A (CV2826) TR tube, Bomac, Sylvania Co-60 37 CPN4, MPN11 5960-00-188-3534 x KLu KM Electronenbuis 1B63A (CV2826) TR tube, Central Electric, Varian Co-60 9.25 CPN4, MPN11 5960-00-188-3534 x KLu KM Electronenbuis 1B63A (CV2826) TR-tube, Metcom CPN4, MPN11 5960-00-188-3535 KM Electronenbuis OA3VR75, VR75-30 (UPX-12) Co-60 37 5960-00-188-3535 KM Electronenbuis 1B23 (A) (CV539) Bomac, Varian, Central Sales, Cetron, Continental, Ferranti, Nuclear Corp. (UPX-12 IFF transp.) (+ par. r_ntgen) Co-60 37 -------------------- Regards, Kevin Forbes, VK3UKF. -------------------- P.S. If anyone here remembers I let out a beta called MERDAT last year for the 2 NASA MER rovers on Mars, MERDAT2007 is in a BETA, no help, but does 3D cyan and red anaglyphs and colour, as well as X-eye 3D and all the data for each JPG image. I would have to say that after looking at all the left eye filters 4, 5 and 6 images the program has made using the MER2RGB method, the sky on Mars is generally blue. If anyones is interested in a look at it, please email me at vk3ukf(a)hotmail.com _________________________________________________________________ Advertisement: It's simple! Sell your car for just $30 at CarPoint.com.au http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fsecure%2Dau%2Eimrworldwide%…

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70cm Antenna Ident
by David Fine 29 Aug '07

29 Aug '07

Can anyone help me identify the manufacturer of a used 70cm crossed yagi that I picked up along with a Yaesu 5400B rotator system at a local hamfest. The antenna has a 12 foot 5/8 inch square boom (in two pieces), 19 elements horizontal, 19 vertical uninsulated through the boom, and folded dipole driven elements. There are two things that I believe make this antenna unique. The coax attaches to the driven element with push-on crimp terminals (UGH), and the directors and reflectors are held in place on the boom with "W" shaped stainless steel spring clamps that are pressed over the boom. The elements then pass through the clamps and the spring tension holds the elements in place. Does this sound familiar to anyone? Thanks for the help. W0DF

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Re: ANDE Special Event
by Robert Bruninga 29 Aug '07

29 Aug '07

> > Reminder of ANDE Operations Event Tues and Thurs: > > I was on the noon pass and nothing has been heard > here and unattended monitoring on the other morning > passes does not show any sign of activities. Thanks Luc, Similar here. On the 1240z pass we saw no othes. On the 1410z pass, we only saw two other stations, KB1GVR, and N4ZQ besides my two stations, WB4APR and W3ADO. But as I spent the next few minutes explaining to the students that it was working hours and probably few players, we heard more packets and noticed that PCSAT came into view. We saw the above plus VE3FFR, AK4KO and WA4AEJ. Sorry, we went to eat lunch and missed the 1550z pass. We even logged onto PCSAT (it uses the default W3ADO-1 call sign) and configured it for full ops, and then to the end of the pass, it gave excellent signals. Both ANDE and W3ADO (PCSAT) use the default path for the APRS satellites which is VIA ARISS. This is the same as that used on the ISS so that users do not have to switch UNPROTO settings between spacecraft. We will try again on Thrusday during the 8AM to Noon EDT passes. Bob, WB4APR Naval Academy Satllite Lab (W3ADO)

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July/August Journal
by Ed Long 29 Aug '07

29 Aug '07

Everyone, The July/August issue of the Journal was uploaded to the printer yesterday. Again, sorry for the delay. I'm not sure how long the process is from now until you receive this issue. I have some articles for the next issue already but, as always, I'm looking for more. Contact me right away if you have something for publication. I'm always looking for articles. Thanks to everyone that contributed to this issue and especially to Bill Hook, W3QBC, for his usual fantastic job assisting with pulling it all together. 73, Ed Long WA4SWJ Editor, The AMSAT Journal

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AO-7
by Ron 29 Aug '07

29 Aug '07

Hi all: I tried to get on AO-7 this morning. I did receive a couple of people, but I could not transmit on frequency. I set it up the way AO-7 web site said to, but I just did not get it. Need help figuring the offset. K5AI, Ron K5AI / Ron Porter

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Re: ANDE Special Event
by Andrew Glasbrenner 29 Aug '07

29 Aug '07

I had the D7 in the truck to a 1/4 wave whip, beaconing every 1. After lunch I checked the list and saw only KB1GVR-9. Not sure if this was from Ande or NO-44. I'll leave it on for Thursday. 73, Drew KO4MA > >Thanks Luc, > >Similar here. On the 1240z pass we saw no othes. On the 1410z >pass, we only saw two other stations, KB1GVR, and N4ZQ besides >my two stations, WB4APR and W3ADO. But as I spent the next few >minutes explaining to the students that it was working hours >and probably few players, we heard more packets and noticed that >PCSAT came into view. We saw the above plus VE3FFR, AK4KO and >WA4AEJ. Sorry, we went to eat lunch and missed the 1550z pass. > >We even logged onto PCSAT (it uses the default W3ADO-1 call >sign) and configured it for full ops, and then to the end of the >pass, it gave excellent signals. > >Both ANDE and W3ADO (PCSAT) use the default path for the APRS >satellites which is VIA ARISS. This is the same as that used on >the ISS so that users do not have to switch UNPROTO settings >between spacecraft. > >We will try again on Thrusday during the 8AM to Noon EDT passes. > >Bob, WB4APR >Naval Academy Satllite Lab (W3ADO) > >_______________________________________________ >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: ANDE Special Event
by ryan woods 28 Aug '07

28 Aug '07

I did not see any thing eather in wv had my d700 runing uiview and the d7 in my room i have not heard ande for a long time but when i do i can get in. just useing two jpoles. i cant be thare "live" i have school and bob can u give my some rough times when ande goes over im in the eastern panhandel of wv 13 mi. south of cumberland or look for kd8atf-2 on findu. 73 kd8atf --------------------------------- Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and lay it on us.

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Re: ANDE Special Event
by ryan woods 28 Aug '07

28 Aug '07

I did not see any thing eather in wv had my d700 runing uiview and the d7 in my room i have not heard ande for a long time but when i do i can get in. just useing two jpoles. i cant be thare "live" i have school and bob can u give my some rough times when ande goes over im in the eastern panhandel of wv 13 mi. south of cumberland or look for kd8atf-2 on findu. 73 kd8atf --------------------------------- Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out.

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Re: Oscar 7
by Wayne Estes 28 Aug '07

28 Aug '07

Scott Wilson wrote: I am waiting on a well-used older FT-817. It's probably not optimal, but it's an all-mode 2m and 70cm rig. I guess these days it's the most affordable (cheapest) all-mode setup. I'll just have to see if it serves better on the TX side or RX side. Downside to TX is only 5W. Downside to RX is that it's an early non-DSP model, so no NR, and limited SSB filtering (if any?) Wayne Estes replies: You can install a Collins SSB filter in the FT-817. That improves audio quality on both transmit and receive. The improved selectivity isn't really needed for satellites because ham satellites are incapable of producing strong adjacent channel signals. Wayne Estes W9AE Oakland, Oregon, USA, CN83ik

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ANDE Special Event
by Robert Bruninga 27 Aug '07

27 Aug '07

Special ANDE Operations Tues/Thurs 28/30 August: Eastern USA Morning passes: On Tuesday, Naval Academy stuents will operate ANDE to gather statistics on the success rate of the APRS mission. We invite participation, attended or unattended IAW these guidelines: 1) Tracking Base stations set 5 minute rate 2) 50W mobiles set 3 minute rate 3) 5W HT's set 1 minute rate Do not TX more often, as it will mess up the statistics. Would be nice if you put your station info in your posit text so we could confirm the validity of the statistics of your transmit rate, something like: "Base=5min +10 dB" "50W =3min w 5/8ths" "HT=1min w 19" ant" On Thursday, we may activate the packet to voice synthesizer. If so, then we will tell you what to do then. See http://www.ew.usna.edu/~bruninga/ande-ops.html Bob, WB4APR

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Oscar 7
by Patrick McGrane 27 Aug '07

27 Aug '07

Greetings Happy to report I worked joe K3SZH on a western pass of Oscar 7 orbit number 50,000 Only heard one other station in 6 land. Not many people on ao-7 and hamsat, usually only one or two other people. Save your bucks for some used all-mode rigs and you can get on. I'm surprised there are few HEO equipped stations around, why wait? Thanks, patrick n2oeq

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Next trip ??
by Alvaro de Leon Romo 27 Aug '07

27 Aug '07

John this is the grids that I still needed in case you want to know NV DM19-DN00-01-21 CA CM79 OR CN72-93-94-95 DN02-03 Many thanks for DM28 , unfortunately I lost you in the others :-(( Whoe are close or know who live in that grids ??? Al XE2AT _________________________________________________________________ Nuevo Messenger www.prodigy.msn.com Windows Live Messenger en Prodigy/MSN

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cross yagi phasing?
by Steve Attfield 27 Aug '07

27 Aug '07

when doing a phase line for a crossed yagi to give it a circular polarization. how do you make sure that you have electrically 1/4 wavelength of line? it strikes me that this would greatly matter or else the antenna wouldn't be fully circularly polarized. -Steve VA3SAX

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TROPOSHPERIC DUCTING FORECASTS
by Gunther Meisse 27 Aug '07

27 Aug '07

An interesting story which arrived at our TV station this morning, TROPOSHPERIC DUCTING FORECASTS The troposphere is the lowest portion of the earth's atmosphere, extending from the earth's surface to approximately 4 to 12 miles above (varying by location and season). Under certain conditions (discussed below) FM radio and TV signals in the VHF and UHF frequency bands can propagate over great distances through the troposphere due to a phenomenon called tropospheric ducting. A Canadian meteorologist and self-avowed radio/TV "DX" (long-distance) enthusiast, William R. Hepburn, has developed a method for predicting tropospheric ducting and provides forecasts (available on the Internet) using this method, which predict radio and TV signal strength propagation as a result of the ducting phenomenon. "William Hepburn's Worldwide Tropospheric Ducting Forecasts" are available online at www.dxinfocentre.com/tropo.html. The principal content on this Website is the forecast maps. Six-day preview as well as 42-hour preview (in 6 hour increments) maps for virtually every region of the world are provided (an example map of Eastern North America is shown here). The purpose of these maps is to display potential duct paths for VHF, UHF and microwave signals, indicated by the color shading on the maps using the "Hepburn Tropo Index" (see scale on the left-hand side of the map). This index indicates the degree of tropospheric bending forecast to occur over a particular area, which is an indication of the overall tropospheric radio signal strength on a linear scale from 0 to 10 (with 10 representing an "extremely intense opening" for propagation by ducting). Also shown on the maps (indicated by the letter "U") are predicted "unstable signal areas" where weather conditions could potentially disrupt signal paths and cause unusual and sometimes rapid variations in signal strengths. Mr. Hepburn's Web page also provides some background information on ducting, indicating that vertical boundaries between different types of air masses (for example, warm air over cooler air) can refract radio signals. When the vertical boundary becomes especially sharp, the amount of refraction can become so severe that signal propagation is extended a great distance as though caught in a duct, thus the reference to tropospheric ducting. The raw data for the maps (temperature, humidity & pressure) are extracted from the Meteorological Service of Canada's global weather model. Mr. Hepburn has written a proprietary algorithm which approximately mirrors the atmospheric conditions necessary to produce tropospheric ducting (warm dry air overriding cool moist air). He developed this algorithm from over 30 years of real-time distant radio & TV observations coupled with 25 years experience as a meteorologist. Using a freeware meteorological program called GrADS, the data is ingested, the algorithms are applied, and the maps are produced. According to Mr. Hepburn, in the U.S., the Gulf States & Florida are most susceptible to ducting, especially during the spring months when the sea temperatures are still relatively low. In the Midwest, Great Lakes & Northeast, ducting is more common in the fall. Ducting is rare west of the Rockies except along the Pacific Coast & Hawaii. The ducting forecast Web page is just one of the sites featured on "William Hepburn's Radio & TV DX Information Centre" Website (www.dxinfocentre.com), which also includes information on radionavigation, worldwide broadcast station lists, and a collection of "TV DX photos" showing screen shots of distant TV signals (as far as 1,000 miles away) received by Mr. Hepburn in Grimsby, ON, Canada (located about 50 miles NW of Buffalo, NY).

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Re: KD6PAG Results of Southwest US grid square trip. --text follows this line--
by John Mock KD6PAG 27 Aug '07

27 Aug '07

from the trip as they don't count for awards i'm looking for. However, i would like it if someone i worked in DM06, DM83, DO30, EM15, EM28, EM45, EM69, EN16, FN02, FN10, FN30 and/or EN90 would work me at/near home soon, to reduce the amount of mail sent/received. By the way, i forget to mention that there were a total of 18 grids worked. on this trip from 39 different locations, making a total of 192 QSO's. Cards were generated in both JPEG and PDF formats, so they would be web- viewable, using homebrew PERL code. So i'm printing these directly from Firefox (via Acrobat reader). The cards print onto 4x6" card stock and are trimmed to postcard size, using non-photo blue to mark the cuts. (If you make your own cards, PLEASE cut them to postcard size!!) Without some automation, this would clearly be too much work (and not nearly enough fun). -- KD6PAG (Networking Old-Timer, Satellite QRPer) -------------------- [Note: If i'm in your address book, please replace 'qsl.net' with 'amsat.org'.]

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Cruise Ship Contacts!
by Paul Lenharr II 27 Aug '07

27 Aug '07

Hello everyone! I had a great cruise and due to weather conditions (rain and wind), I wasn't able to work the birds as much as I would have liked to.... Oh well... Anyway, I did manage to make a few passes and I have to say that there was a great turnout on almost all of the passes. Thanks to N2BX for being on ALL the passes! A familiar voice that I was glad to hear each and every pass. I will have the grid squares emailed out to all of you sometime this week. If you contacted me on either A0-27, or A0-51 during the last week, please send me an email with the details. While I have received quite a few, I know for a fact that I am missing some of you guys. I would have kept track of them myself, however my voice recorder took a crap (Murphys law) and I was only able to write down the ones I could remember and some partials. Kind of hard standing on the front of a ship with a HT in one hand, Pocket PC AND GPS in the other and writing at the same time. All the while fighting the wind! =) Thanks again for all the contacts! 73, -- Paul D. Lenharr II (KB3NDS) VUCC #1522 - 50mhz Six Club Member #2350 Skywarn Spotter # CS-19 "Pain is temporary, Pride is forever!" Charles County Tactical Response Team NREMT-I, Firefighter, Haz-Mat Technician Department of Homeland Security Instructor (301) 399-9504

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Re: KD6PAG Results of Southwest US grid square trip.
by John W Lee 26 Aug '07

26 Aug '07

Great Job, John, Those who missed this trip missed some RARE grids and counties. And the cards are great! No mass-produced cheapies here, each one is personalized with pictures, etc. Very nice. John would probably be glad to receive your cards if you worked him. 73 John, K6YK

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Re: [eu-amsat] AO-7 Distance Record.
by John Hackett 26 Aug '07

26 Aug '07

Hi Gents, Well, I'm with Thomas HB9SKA on this one. For a satellite QSO you need to calculate the distance from the transmitter to the receiver ... ie, Station A to the satellite concerned ... and from the satellite to station B ... then add them together to get the true distance the signal travels. Like Thomas says ... using the locator to locator measurement only gives the "terrestial" distance. 73 John. <la2qaa(a)amsat.org>

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26 Aug 2007 1138z ANDE-1???
by karn suwanrat 26 Aug '07

26 Aug '07

Hello all. 26 Aug 2007 1138z. I Received on145.8250MHz. 1:Fm E20ZFD To APRS Via ANDE-1 <UI pid=F0 Len=50 >[18:38:39] =1347.03N/10032.15E-E20ZFD APRS Via ANDE {UISS51} 1:Fm ANDE-1 To BEACON <UI pid=F0 Len=39 >[18:38:41] T#001,104,163,145,149,140,10101110,000 1:Fm E20ZFD To APRS Via ANDE-1* <UI pid=F0 Len=50 >[18:38:42] =1347.03N/10032.15E-E20ZFD APRS Via ANDE {UISS51} Thank you 73,s Karn Suwanrat E20ZFD

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AO-7 Distance record.
by John Hackett 26 Aug '07

26 Aug '07

Hi Thomas, Mak, Don't worry about it ... (I'm not) ... it doesn't matter which program one uses to calculate the distance ... Frei Island to Japan is still the longest LEO contact to the best of my knowledge ... though that one was on FO-20. 7800 or "merely" 6500Km on AO-7 ... it's still better than a kick up the arse. At least I do have the QSL's for the regular contacts from Frei Island to Eagle River, Alaska. <http://www.observations.biz/Observations_from_Norway/how_much_power_is_enou…> However, the distance is not so important but it is interesting to be able to illustrate what can be done with low power and home brew gear. NB. It's refreshing to see more and more American stations rediscovering CW and SSB on AO-7 but PLEASE !!!! watch the power. The gentleman "crowing" about your amplifier ... SWITCH IT OFF !!!. The *ONLY* time you need an amplifier is when you're using a 50 ohm resistor for an aerial. (Tongue-in-cheek of course but it is permissible to use common sense). The newcomer often uses far more power than is necessary ... and I can assure you, anadequate receiving system *DOES* help. Remember ... near the horizon AO-7 is 300Km away, at TCA (time of closest approach) it's only 1000Km above you and you need *A LOT* less power to communicate. Please read this ... <http://www.observations.biz/Observations_from_Norway/howmuchpowerisenough.h…> 73 John. <la2qaa(a)amsat.org>

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Re: A051
by Bruce 25 Aug '07

25 Aug '07

this method of correcting for doppler is an incorrect practice. It might be fine if you and your buddy are the only two on the satellite. also, notice you say 'you perfer', not the correct method. As doppler affects both frequencies, they should both be corrected using computer control. In the absence of computer control, the higher of the two frequencies is always corrected because doppler affects the higher frequency more. It does not matter if this is your tx or rx, it is always the higher frequency. 73...bruce -----Original Message----- From: "i8cvs" <domenico.i8cvs(a)tin.it> Subj: [amsat-bb] Re: A051 Date: Thu Aug 23, 2007 3:04 pm Size: 1K To: "Scott Wilson" <s.wilson(a)yahoo.com>, <k3szh(a)netzero.net>, "AMSAT-BB" <amsat-bb(a)amsat.org> ----- Original Message ----- From: "Scott Wilson" <s.wilson(a)yahoo.com> To: <k3szh(a)netzero.net>; <amsat-bb(a)amsat.org> Sent: Thursday, August 23, 2007 5:38 PM Subject: [amsat-bb] Re: A051 > For those more experienced, I do have a couple of questions: > > When operating an inverting linear, do you generally transmit on USB and > listen LSB or visa versa? Hi Scott, NW2S We transmit LSB and we receive USB because doing so many other radio hams dedicated to tropo traffic in VHF/UHF can hear us from the satellite by chance in 2 meters and 70 cm where they normally operate in USB for tropo. > When operating linear, what's the accepted approach to doppler correction? > It seems that you would be able to transmit without any correction, but > that your receive would vary a lot more - or perhaps again, visa versa? There are various preferences but since OSCAR-6 I prefere to keep constant the frequency of my return SSB signal while manually correcting the TX frequency to keep my voice constantly clear while speaking. If the operator in contact with me do the same then our QSO start and end on the same frequency during the whole orbit. I prefere to use separate RX and TX and in my case they are nothing special very old and mostly homebrewed equipments.

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FS: Cushcraft dualband Yagi
by John Geiger 25 Aug '07

25 Aug '07

I have for sale a Cushcraft A270-10S dualband (2m/70cm) yagi. This is the model with 5 elements on each band. It has only been up a month so it is still in very good shape. Hate to sell it but my HF/VHF/UHF rig died so need some money to get a replacement. I paid $130 new for it a month ago, I am asking $75 plus shipping. 73s John AA5JG (ex: W5TD, NE0P) 6M WAS #1275, 6m VUCC #1260 2m VUCC #615, Satellite VUCC #129

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Re: A051
by Bruce 25 Aug '07

25 Aug '07

if people would not snip the part out of the original post, you would have seen in my next sentence that I said in the absence of computer control you always correct the higher of the two frequencies as that is the frequency affected most by doppler. It does not matter if that frequency is the tx or the rx, always the higher of the two. rr on my daughter...boys, school, clothes and cd's take her money hihi she went off to university last week...maybe if she gets a fully automated station at school we would hear from her more often. 73...bruce -----Original Message----- From: "Roger Kolakowski" <rogerkola(a)aol.com> Subj: Re: [amsat-bb] Re: A051 Date: Fri Aug 24, 2007 6:03 pm Size: 1K To: "Marc Vermeersch" <mvermeer(a)skynet.be>, "'Bruce'" <KK5DO(a)amsat.org>, "'AMSAT-BB'" <amsat-bb(a)amsat.org> Bruce (a very influential and integral part of AMSAT) projected: > As doppler affects > both frequencies, they should both be corrected using computer control But computer control may not be available in DX, mobile, remote, battery power, "minimalist" or "emergency" situations. Computer control is an advancement, it should not keep people off the satellites. If everyone spouts "computer control" you will never give a "newbie" the satellite bug. I have a QSL card from Bruce's teen age daughter...Bruce, do you think she, as a bona fide Ham Radio operator, has the personal finances available, assuming she is saving for college, to put together a computer controlled SSB satellite station? Why should she be kept off the linear birds because she can only afford an inexpensive 435 SSB/CW rig and a preamp, downconverter for 2 meters to 10? (BTW my 2 kids are licensed also but they are 28 and 24 respectively.) I believe there should be correction, but it does not HAVE to be "computer controlled," it has to be on a best effort basis. Roger (first Satellite contact on RS-6 & multi contacts keying an FM rig) WA1KAT ----- Original Message ----- From: "Marc Vermeersch" <mvermeer(a)skynet.be> To: "'Bruce'" <KK5DO(a)amsat.org>; "'AMSAT-BB'" <amsat-bb(a)amsat.org> Sent: Friday, August 24, 2007 7:36 AM Subject: [amsat-bb] Re: A051 > > > this method of correcting for doppler is an incorrect practice. It might > > be fine if you and your buddy are the only two on the satellite. also, > > notice you say 'you perfer', not the correct method. As doppler affects > > both frequencies, they should both be corrected using computer control. > > Meaning: Keep the frequency at the satellite constant... Right? > > Thanks, > -- > /\/\arc > > > [snip] > > > _______________________________________________ > 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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AO-7 Distance Record.
by John Hackett 25 Aug '07

25 Aug '07

Hi Mak, I believe I broke the AO-7 distance record this morning with a QSO with Patrick K9HF in Madison, Ohio, EM48UN. EM48UN to Frei Island JP33WB is just over 7800Km according to your DX calculator. Unfortunately, the e-mails I tried sending to Patrick at his address on QSL-COM and Amsat.org have all bounced so unless he reads this and contacts me with his QSL I cannot confirm the contact. Just like the one I had on FO-20 with Japan some years ago ... for the longest distance LEO DX QSO. However ... I presume you have seen the cards from AL7JK ??. <http://www.observations.biz/Observations_from_Norway/how_much_power_is_enou…> I've attached my own card for this mornings QSO with K9HF. If K9HF ... (or anyone else) ... contacts me with his e-mail address I'll let you know. 73 John. <la2qaa(a)amsat.org>

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dial up access
by Patrick McGrane 25 Aug '07

25 Aug '07

Greetings from username N2OEQ Thomas McGrane in mattituck ny I cant connect to the riverhead NY server after repeated tries using the proper username and password. Something new I'm also having trouble getting dumped at the mattituck Ny server. Please check into these, thanks, pat

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dial up access
by Patrick McGrane 25 Aug '07

25 Aug '07

Greetings from username N2OEQ Thomas McGrane in mattituck ny I cant connect to the riverhead NY server after repeated tries using the proper username and password. Something new I'm also having trouble getting dumped at the mattituck Ny server. Please check into these, thanks, pat

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Results of Southwest US grid square trip.
by John Mock KD6PAG 25 Aug '07

25 Aug '07

It took about a month to transcribe voice recordings, then print and mail QSL cards from my Southwest grid square trip. This generated a stack of cards over an inch thick (perhaps 3 cm), and at least a pound of mail dropped off at my local post office on Wednesday. Not sent yet are cards to Mexico (i have some software problems with Mexican postal addresses) and a dozen other callsigns those whose grid squares i've not worked from home (e.g. DM06, DM83, DO30, EM15, EM28, EM45, EM69, EN16, FN02, FN10, FN30, and EN90). The latter have been sent e-mail and their cards will be sent out with the cards to Mexico if i don't hear otherwise. About 50 cards or letters have been sent out so far (plus a few more for CM86). The top five stations were: K6YK (13 grids in 16 contacts) WA8SME (13 grids in 11 contacts) W7JPI (11 grids in 10 contacts) AI7W (11 grids in 7 contacts) W6ASL (10 grids in 9 contacts) with honorable mention to N2BX, N5AFV, KG7EZ, W6GMT, W6ZQ, VA7VW, KE5FWK, and WD9EWK, W0SAT, with 5-9 grids each. Those who worked SO-50 as well as AO-27 and AO-51 got the best scores. Many contacts were made from grid square boundaries, and two passes were done from a grid square corner. Multiple GPS readings were used to determine grid boundaries and DM07/DM08/DM17/DM18 had a permanent marker which collaborated the GPS readings. Most such cards also include a small photo taken at/near the operating point, which might be correlated with satellite images (Google maps) and/or topographic features. Most QSL cards have been uploaded to ARRL's Logbook of The World (LoTW), except those on grid square boundaries. There is a checkmark on the QSL indicated whether that data was on-line when the card was printed. (If anyone can help me determine how to submit cards with more than one grid square to LoTW, that would definitely be appreciated.) I was disappointed to find out that the further east i got during this trip, the more difficult it was to work eastern passes on AO-51 (and to some degree AO-27). I had always thought that the problems were worst when both the Pacific and Atlantic coasts of North American were in view of the satellite. I'm no longer convinced that this is the case. I thinking about another trip, maybe into Oregon, perhaps parts of Nevada and/or Washington. Suggestions would be welcome. And if after a week or so, if you reside in the USA or Canada, and haven't received card(s) or e-mail from me, please send me e-mail. -- KD6PAG (Networking Old-Timer, Satellite QRPer) P.S. Special thanks to K6YK for providing third-party traffic home when there was no cell phone coverage or suitable pay phones available. (So i smiled when i saw the cover of this month's QST magazine.)

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September schedule
by Andrew Glasbrenner 24 Aug '07

24 Aug '07

It's time again to get your requests in to ao51-modes(a)amsat.org for the September schedule on AO-51. We have a few already, and will be finalizing things real soon. Thanks for all the e-mails and support, and see you on the satellites soon. 73, Drew KO4MA AMSAT-NA VP Ops

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Re: AO-51 Status
by Greg Johnson 24 Aug '07

24 Aug '07

Thanks Gould for the info on AO-51. Any chance the 435.300 downlink was offline again last night? Still could not hear any traffic....perhaps I do need to check my antenna/pre-amp closer. Thanks and 73, Greg, KC9ERZ

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Re: A051
by Scott Wilson 23 Aug '07

23 Aug '07

Great message. I too have noticed that AO-51 is so extremely busy to the detriment of all of the others. I have used SO-50, and it's generally quieter, I'm guessing simply by virtue of it not being 51. To be honest, the fact that I cannot run SSB full-duplex has kept me away from the linear satellites. That, and the fact that I worry about AO-7's fragility. I'd hate to be the one to blow it back into a coma. On joining AMSAT, I received a laminated card that describes the available modes for each satellite. One of the more useful (for me) sections is a "channelized" list of frequencies for the linears. Though this probably bothers the purists, it's given me a little hope of at least attempting them since I will have a neighborhood to look for. For those more experienced, I do have a couple of questions: When operating an inverting linear, do you generally transmit on USB and listen LSB or visa versa? When operating linear, what's the accepted approach to doppler correction? It seems that you would be able to transmit without any correction, but that your receive would vary a lot more - or perhaps again, visa versa? There are a number of articles in amsat/arrl journals about getting started on FM, but considerably less written about making the transition to linears. Maybe you can help us get on! thanks, Scott NW2S

2 1

AO51 L/U
by daleh＠alaska.net 23 Aug '07

23 Aug '07

I just had a descending pass AO51 across Alaska. Max elevation was 44deg. Heard no one. I was able to hear myself on downlink with foot print over the Northwest to California. With no QSO at least I know my L band works. 73 Dale - KL7XJ 30600

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AO-51 Status
by Greg Johnson 23 Aug '07

23 Aug '07

Hello All, New to the satellites. I was trying to listen to AO51 yesterday evening aroung 8/22/07 - 00:59 UTC (FM Voice side) from my location in southern Indiana. I could not hear anything on the downlinik freq 435.300 (starting at 435.310 and down to 435.290 to account for doplar). Anyway, I usually can hear some traffic, but last night nothing. I was wondering if perhaps AO51 was having problems last night or I need to look at my antenna setup closer. Thanks, Greg Johnson KC9ERZ

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Re: A051
by Garie Halstead K8KFJ 23 Aug '07

23 Aug '07

--- John AA5JG <aa5jg(a)lcisp.com> wrote: > Sadly even the ARRL doesn't push SSB/CW for > VHF/UHF use. I'll have to disagree with that one John. Why else would the ARRL sponsor a VHF contest utilizing SSB/CW modes in both June and September year after year and a UHF Contest in August? 73, Garie -K8KFJ- AMSAT #32574 ____________________________________________________________________________________ Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting

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LO-19 LUSAT
by Hans Hopstaken 23 Aug '07

23 Aug '07

Hello group, Just started up ORBITRON and LO-19 turned out to be in range of my qth (JO21xu). I listened to the cw beacon on 437.125 Mhz (plus/minus dopplershift of course), which was rather loud on my V2000a vertical for 2m/70cms. Orbit # 91833. 73 Hans, pa0hop JO21xu

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AO-51 mode LU - nice signals
by Greg D. 23 Aug '07

23 Aug '07

Hi folks, Nice signals on AO-51 this evening's two passes, and one pass last night. Finally had some activity on the bird tonight. Thanks to K7WIN, WA6FWF for the chats, and N8BBQ for the really quick contact before we lost it. I've confirmed that the 18T helix that I created a while back is working fine, at least as good as the temporary quagi I used back on Field Day. You don't need a whole lot of power or antenna to work this mode. in fact, I was able to work down to about 4.5 degrees before losing contact, as the satellite set in the only direction that I don't have a wall of trees to shoot through. Trees aren't as bad on 23 cm as they are on 13cm, but they are definitely a factor. I'll try to be on again tomorrow evening, depending on other obligations. Greg KO6TH _________________________________________________________________ Booking a flight? Know when to buy with airfare predictions on MSN Travel. http://travel.msn.com/Articles/aboutfarecast.aspx&ocid=T001MSN25A07001

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FO-29 CW, 23 Aug 2007
by Mineo Wakita 23 Aug '07

23 Aug '07

FO-29 435.797 MHz, CW 12:12-12:29 JST, 23 Aug 2007 03:12-03:29 UTC, 23 Aug 2007 Max ele 27 deg HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 5E 64 9E A2 B0 9F B9 B4 B9 BA B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 5E 64 9F A2 B0 84 B9 B4 B8 BA B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 61 63 9E A2 B0 9B B8 B4 B8 BA B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 63 64 9F A1 B0 94 B8 B4 B8 BA B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 63 63 9E A1 B0 51 B8 B3 B8 B9 B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 60 64 9F A2 B0 93 B8 B3 B8 B9 B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 61 64 9F A2 B0 8E B8 B3 B8 B9 B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 61 64 9F A2 B0 87 B8 B3 B7 B9 B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 61 64 9E A2 B0 89 B8 B2 B7 B9 B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 60 64 9F A2 B0 88 B8 B2 B7 B9 B5 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 62 65 9E A2 B0 89 B8 B2 B7 B9 B4 HI HI 22 A2 88 D1 8F A9 05 25 00 24 00 00 66 64 9F A2 B0 8F B7 B1 B7 B9 B4 Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode AUTO PCU Level 3 : Battery Mode FULL Battery Logic TRIC : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 0.0 [nT] GAS-X 0.0 [nT] Solar Panel Current 1000.0 [mA] Battery Current -40.0 [mA] Battery Voltage 17.1 [V] Battery Middle Voltage 7.8 [V] Bus Voltage 17.3 [V] Analog Tx Power 831.4 [mW] Structure Temp. 1 10.8 [C] Structure Temp. 2 13.1 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 10.0 [C] Battery Cell Temp. 12.0 [C] de JE9PEL, Mineo Wakita

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Re: Fw: Re: 70cm Parasitic Lindy
by i8cvs 22 Aug '07

22 Aug '07

----- Original Message ----- From: "Anthony Monteiro" <aa2tx(a)comcast.net> To: "i8cvs" <domenico.i8cvs(a)tin.it> Sent: Wednesday, August 22, 2007 4:46 PM Subject: Re: Fw: [amsat-bb] Re: 70cm Parasitic Lindy > Hello Domenico, > > Nice to hear from you! Unfortunately, I do not understand > Spanish. I could tell that you were commenting about the BALUN > but not enough to really understand it - I am sorry. > > 73, > Tony AA2TX Hi Tony, AA2TX About a simple balun for your Parasitic Lindy I was trying to say you that a balun-bazuka for 435 MHz with a ratio 1/1 can be made as follows: Slip 81 mm of coax braid over the PVC jacket of your feed line and live this braid open and insulated at the point in wich the feed line connects to the open dipole. Cut and remove a small ring of PVC jacket from your feed line at a distance of 81 mm from the studs of the open dipole. Solder the other end of the 81 mm braid all around the ring of the exposed braid of your feed line and protect this soldered point from water using a heat-shrink tubing. The braid slipped over the PVC jacket of your feed line is made 81 mm long because the dielectric constant of PVC II or Vinil Polychlorure is ranging between 4 to 5 depending of the jacket type so that considering an average value of 4.5 for the dielectric constant the velocity factor for PVC is Vf= 1/(SQR 4.5 ) = 0.47 It follow that for 435 MHz a quarter electrical wavelenght balun-bazuka made of a braid slipped as a tubing over the PVC jacket of a coax feed line is long 300/435/4 * 0.47 = 81 mm >From the electrical point of view call I1 the RF current flowing over the inner conductor of your feed line connected to one arm of the open dipole. Without using a balun-bazuka the current I2 flowing over the inner surface of the braid of your feed line as soon arrive to the other arm of the dipole divide itself in two parts. I4 is the current that flow in to the arm of the dipole and I3 is the current that flow back to the generator traveling over the outside surface of the braid of your feed line and is badly radiated by the line itself but in any case I2=I3+I4 Using instead the mentioned quarter wave balun-bazuka the current I3 after flowing back over the outside surface of the braid of the feed line get a short circuit after 81 mm from the dipole and it is completely reflectet back to the dipole so that I3 cannot be radiated by the feed line and the currents flowing in both arms of the dipole are equals and balanced i.e. I1=I2 I am confident that this type of balun-bazuka 1/4 wavelenght long is much better than using ferrite beads slipped directly over the jacket of the coax cable. For more information on this type of balun-bazuka read Walter M. Maxell W2DU book "REFLECTIONS Transmission Lines and Antennas " Best 73" de i8CVS Domenico

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Re: TS-2000 birdie
by Eddy GORA 22 Aug '07

22 Aug '07

I admit I don't knew nothing abt. birdies but I never thought Kenwood can sell this kind of radio for that amount of money. This is disrespect for customers, I paid 2700 EUR few months ago. Actually I don't bought this radio for satellite, just as "best money can buy" compared to all features inside. I use mostly on VHF & up ( so comments are for that part ) and I discovered after using abt. 2 years ( I had several TS-2000 ) many bad implemented functions like SUB-RX, NB function, birdies... I don't say it's bad, but for sure 2700 EUR in YO ( in January 2007 ) are far away from reality for this radio. I consider now, TS-2000 worth only for a very good modulation, very good thermal management and quite good front panel compared to let's say 857 of 897 from Yaesu ( of course, except 7-800 EUR 23cm band module and power increased ). Since I am only interested on VHF&up DX, I really consider to buy a good SW one and a decent transverter. Best regards, 73, YO3HCV Sorry to hear that you found out after you bought the rig. It is a well known problem and Googling "ts 2000 birdie" will find 5 hits. Despite this, I have one and it is still a great rig. Jack Swart Sydney, Australia -- VK2TRF QF56oe P5 or nothing No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.1/965 - Release Date: 8/21/2007 4:02 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.1/965 - Release Date: 8/21/2007 4:02 PM

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TS-2000 birdie
by Eddy GORA 22 Aug '07

22 Aug '07

Hi everyone, As I spoke with some friends G0SFR, YO3GCF, I just checked today my TS-2000 for any "birds" on 70cm band. My transceiver it's brand new TS2000X, european version, fabricated in October 2006. Checked in USB mode ( make your corrections for FM ), finest step possible, 50 Ohm dummy load. This are results on claimed frequencies and intensity if applicable : 435.862 - S0 - almost perceptible, but present 436.799 - S9 - very strong, I can't imagine how Kenwood sell this TVCR ! When the SUB receiver it's active, there are several S9+60 signals from each other MAIN-SUB. SUB receiver it's only for talking around, at least on 2m, has a lot of inter-modulations and cross-modulations. In fact, schematic performs quite well, just the design it's bad (watch the SUB FM demodulator and front-end, like an ordinarily PMR radio). 73 de Edi, YO3HCV No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.484 / Virus Database: 269.12.1/965 - Release Date: 8/21/2007 4:02 PM

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70cm Parasitic Lindy
by Anthony Monteiro 22 Aug '07

22 Aug '07

At 05:00 AM 8/19/2007, John Heath wrote: >Hi Tony, > >Thanks for publishing the 2m design for your para lindy. >I will be building one to pair up with my 70cms version. > >I had several e-mail asking where to download the 70cms design. >Is it accesible on the net antwhere? ><http://www.amsat.org>www.amsat.org would be a good place. > >73 John G7HIA Hi John, Ron Porter, K5AI was kind enough to convert it to a pdf and put it on his web site. Anyone who wants it can get it here: http://www.qsl.net/nwlarn/sat/70ParaLindy.pdf This is from the 2006 AMSAT Space Symposium. 73, Tony AA2TX

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SATPC32 Compatibility with TrakBox
by John Kopala 21 Aug '07

21 Aug '07

Does anybody know if SATPC32 supports the terminal interface with a TrakBox for antenna positioning? Thanks, John Kopala N7JK

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Attention - Chris Weaver.
by Dave Aitch 21 Aug '07

21 Aug '07

Need your address to send you the KCT/T please Chris. Tried your direct e-mail address but no replies. Cheers, Dave.

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Re: AO-7 log proposal.
by w7lrd＠comcast.net 21 Aug '07

21 Aug '07

Hello- Many times I'll tell the XYL,"I'll be in lthe ham shack". Four hours later I'll "surface". She'll say, "who did you talk to"? No one I reply, but I had a blast! Activity does not necessarily you hit the PTT switch. 73 Bob W7LRD Seattle -------------- Original message -------------- From: "John Hackett" <archie.hackett(a)hotmail.com> > To whom it may concern, > I propose that the statistics system of > the AO-7 Resource Page log be modified somewhat. > > Namely ... that the scorecard *NOT* give points when no actual QSO takes > place. > > Further ... that the minimum requirement should be an exchange of signal > report and locator for a > 'valid' QSO to be added to the scorecard. > > The reason that I propose this change is that one particular station has > claimed 34 points in the last 7 days without having conducted one single QSO > .... which makes a mockery of the current scorecard system. > > While the log was originally intended as an ACTIVITY log ... there are many > stations who appreciate the scoring system ... thereby adding to the > 'challenge' ... and increasing their awareness of the need for good > operating proceedures as well as improving their receiving capabilities. > > It is unfair that these stations be surpassed by others who don't even have > a QSO via the satellite. > > That is why I propose a modification of the scoring system ... ie ... no QSO > = no points. > > Opinions, comments and 'flaming' to me please, preferably on the back of a > $100 note though an e-mail will suffice ... (at a pinch). > > 73 John. AO-7 Resource Page Log Admin: > > > _______________________________________________ > 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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AO-51.
by John Hackett 21 Aug '07

21 Aug '07

Hello folks, Not having worked an FM satellite for about 10 years I'm wondering if there's any activity over Europe on AO-51. I've worked various analogue satellites every day for the last 17 years but havn't listened to or worked AO-51 "live" ... though I have listened to it while it was over California ... (while connected to N1DID on Echolink). I recently borrowed an IC-E91 D-Star handheld and thought of giving AO-51 a try. My QTH on Frei Island doesn't lend itself to ISS passes but according to InstantTRACK AO-51 does occasionally pass within spitting distance of me .... but do the Europeans work this satellite?. Any comments would be very much appreciated. 73 John. <la2qaa(a)amsat.org>

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LZ/G0SFJ and YO/G0SFJ report
by andy thomas 21 Aug '07

21 Aug '07

As previewed here and on Radio Bulgaria International's DX programme, G0SFJ operated with an Arrow and a FT51-R from LZ and YO these last few days. My records show: >From Belite Brezi (see: http://www.astro-brezi.org, LZ, KN21nn, on 12 and 13/8 on AO51: G7HIA 9H1FF F6CDZ G0VHS PD1DRE SW1IXP OZ1MY DG9YIB >From the European circle (monument) in Herastrau Park, Bucharest,(see: http://bruxelles.mae.ro/pdf/Romanian%20Headlines%20no.%208.pdf paragraph 24) YO, KN34al on 18/8: IW0DTK and in the evening outside Bucharest in a sunflower field, KN34bq ON5SA (mostly) Also I heard G8ATE and GB1PBL and called both Dave and Robert but they were low on my horizon and talking to each other! Observations 1. I found out in the manual that my FT51R reduces tx power when the case gets hot (repeated useage on 5 watts) and I think this was a problem after mid pass. Lesson: do not use up power (and heat!) on the only alligator on the satellite Northbound (you know who you are - on reflection, you probably don't!)! Certainly, temperatures in YO were in the high 30s (Centigrade) for most of the day, and this could mean it would heat up quicker. Maybe I'll fit a small Peltier device to the case? 2 I found it difficult to switch on SO-50 in the mornings and the night passess were after 2300 local and in pitch dark, so I'm afraid I abandoned SO-50. It might be that I was simply on the wrong rx frequency if it is changeing from expected. 2 A pleasure to meet Victor YO3HQN, Eddy YO3HCV and Dragos YO3GCF. I hope at least one of them will appear soon with an Arrow?HT on AO51... All passes tape recorded. I will QSL direct or via bureau and some pictures of the operation will appear in due course on http://www.andythomas.eu 73 and thanks again to the AO51 command crew and G0SFJ ___________________________________________________________ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html

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AO-7 log proposal.
by John Hackett 21 Aug '07

21 Aug '07

To whom it may concern, I propose that the statistics system of the AO-7 Resource Page log be modified somewhat. Namely ... that the scorecard *NOT* give points when no actual QSO takes place. Further ... that the minimum requirement should be an exchange of signal report and locator for a 'valid' QSO to be added to the scorecard. The reason that I propose this change is that one particular station has claimed 34 points in the last 7 days without having conducted one single QSO .... which makes a mockery of the current scorecard system. While the log was originally intended as an ACTIVITY log ... there are many stations who appreciate the scoring system ... thereby adding to the 'challenge' ... and increasing their awareness of the need for good operating proceedures as well as improving their receiving capabilities. It is unfair that these stations be surpassed by others who don't even have a QSO via the satellite. That is why I propose a modification of the scoring system ... ie ... no QSO = no points. Opinions, comments and 'flaming' to me please, preferably on the back of a $100 note though an e-mail will suffice ... (at a pinch). 73 John. <la2qaa(a)amsat.org> AO-7 Resource Page Log Admin:

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I: SO-50 5 kHz up with downlink
by Francesco Grappi 20 Aug '07

20 Aug '07

Hi Ib, Thank you very much for this informations about So-50. In fact this evening during that pass, I had some problems to listen my own downlink on right way. Thank's and 73" Francesco IW4DVZ -----Messaggio originale----- Da: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] Per conto di OZ1MY Inviato: lunedì 20 agosto 2007 20.47 A: AMSAT-BB Oggetto: [amsat-bb] SO-50 5 kHz up with downlink Hi, SO-50 has changed frequency 5 kHz up during the pass with AOS at 1830 UTC here from Copenhagen. It did the same last week, but I do not know if it has been like that since last week since I have been away. I use two different lines in the doppler file in SatPC32 to take that into account. SO-50,436790.50,145849,FM,FM,NOR,0,0 SO-50,436795.50,145849,FM,FM,NOR,0,0 On this pass I used the lower one to get the downlink frequency OK. 73 OZ1MY Ib _______________________________________________ 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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SO-50 5 kHz up with downlink
by OZ1MY 20 Aug '07

20 Aug '07

Hi, SO-50 has changed frequency 5 kHz up during the pass with AOS at 1830 UTC here from Copenhagen. It did the same last week, but I do not know if it has been like that since last week since I have been away. I use two different lines in the doppler file in SatPC32 to take that into account. SO-50,436790.50,145849,FM,FM,NOR,0,0 SO-50,436795.50,145849,FM,FM,NOR,0,0 On this pass I used the lower one to get the downlink frequency OK. 73 OZ1MY Ib

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DL28 !!!!!!!!!!!!!
by Alvaro de Leon Romo 20 Aug '07

20 Aug '07

I talked with Bernardo XE2HWB by cel and he will try to be in DL28 this afternoon, Monday 20th, in the AO27 west pass. If he canot be will try again in next 2 night passes on AO51... Good luck to all Al XE2AT _________________________________________________________________ Windows Live Spaces en Prodigy/MSN Spaces: Crea tu propio espacio. http://spaces.live.com

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Re: ISS APRS Emergency traffic: question for G6XCJ
by Bob Bruninga 20 Aug '07

20 Aug '07

> From his QRZ bio (roughly translated by Google): > > "At this time I conducting the experiments technical > with APRS and the reaction of S.O.S in APRS ... > I favour the word of S.O.S not Emergency. > Us summers in EU/CE not America." I dont think he understands that the "EMERGENCY" that is decoded when a D7 or D700 or other Mic-E device sends the "EMERGENCY" position comment is not an on-air text. The position "comment" in these radios is encoded in only 3 bits of the position report. There are only 8 such pre-defined codings. So to change the display of the emergency bits "111" from "EMERGENCY" to "S.O.S." would require a recall of tens of thousands of radios and APRS software to change the coding. The Mic-E format used by the Kenwoods is highly compressed. That is why it only takes 110ms to send an APRS report from them. This was so that the tiny burst could be encoded on the tail-end of a voice transmission and hardly be noticed. Though few people ever use this mode. Sending out an EMERGENCY coding for his test is never a good idea on any communicatinos system. Bob, WB4APR

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FO-29 CW status 20 Aug
by Mineo Wakita 20 Aug '07

20 Aug '07

FO-29 435.797 MHz, CW 05:57-06:13 UTC, 20 Aug 2007 14:57-15:13 JST, 20 Aug 2007 Max ele 20 deg HI HI 22 AA 88 D1 8F 98 05 25 00 24 00 00 6D 62 9F A2 B1 70 BC BB B7 B6 B7 Main Relay ON : DCM ON SRAM OFF : Packet OFF JTA ON : JTD OFF GAS OFF : SAS OFF : UVC ON UVC Level 1 : PCU Mode MANU PCU Level 3 : Battery Mode FULL Battery Logic TRIC : Digitalker Mode OFF : UVC ACT/PAS PAS CPU RUN/RESET RUN : Spin Period 8356.0 [msec] Sun Angle 72.5 [deg] GAS-Z 0.0 [nT] GAS-X 0.0 [nT] Solar Panel Current 1068.6 [mA] Battery Current -79.2 [mA] Battery Voltage 17.1 [V] Battery Middle Voltage 7.8 [V] Bus Voltage 17.4 [V] Analog Tx Power 629.9 [mW] Structure Temp. 1 8.9 [C] Structure Temp. 2 9.3 [C] Structure Temp. 3 10.8 [C] Structure Temp. 4 11.2 [C] Battery Cell Temp. 10.8 [C] de JE9PEL, Mineo Wakita

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integration of W0LMD Satellite Tracker Mini + linux + g-5500 + ft-847
by Eric Fort 20 Aug '07

20 Aug '07

I will be acquiring a g5500 rotor this week and possibly a "W0LMD Satellite Tracker Mini". I'd like to automate these items and my ft-847 using the linux based computer that already controls the rest of the station. Predict looks like a good choice for tracking software but how do I get everything to work together? how do I Integrate these pieces? Eventually I hope this integration will provide a satgate and remote base for a local radio linking group. Thanks, Eric kg6kqt

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Anyone using the Linux FODTrack driver?
by Jim Shorney 20 Aug '07

20 Aug '07

I have some questions. If you can help, please email me off-list. TIA -Jim -- Ham Radio NU0C TR7/RV7, TR6/RV6, T4XC/R4C, L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/

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Logging with an Arrow
by WB2LLP 20 Aug '07

20 Aug '07

The other day I made my first contacts using my IC-W32A and my "Cheap Yagii Arrow" antenna. Like many before me I found paper logging to be impossible. There have been many clever solutions to this problem using a recorder documented, but I can not find any reference to them. Is there someone with a better memory, or filing system, who could point me to some references. TNX es 73 de WB2LLP

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ISS APRS Emergency traffic: question for G6XCJ
by Henk, PA3GUO 20 Aug '07

20 Aug '07

Looking at www.ariss.net I see: 02:01:22:50 : G6XCJ]CQ,RS0ISS-4*,OI94SG,qAr,DF5FF-10:EMERGENCY TX PLSE RSVP +447877482840 GPS LOC TRUE. 145.225Mhz (CTCSS:100hz monitored) Two questions for G6XCJ: 1) what uplink freq. did you use ? 2) assuming this was a mistake, do you expect in real cases we call that number ? I tried that number, and I was asked to hang up by a robot voice. Seems you cannot call that number from outside the UK, so you may want to review if that number is usefull for this purpose. Thanks ! Henk, PA3GUO

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Re: Logging with an Arrow
by Bruce 20 Aug '07

20 Aug '07

The way I log with my arrow is to first listen to some of the pass and write down the calls I hear. Then I jump in. If I get someone either by calling them or them calling me, I put a check mark next to their call. If I get a call I had not written down, I quickly jot it down. You do not need any further information from them. Grid squares can be retrieved from QRZ or your favorite database. The times are irrelevant. You can simply enter the start of the pass for all your contacts. As they will be within 15 minutes of the exact time who cares if you are exact to the minute. Also, the arrl logbook of the world gives you a 1 hour window (if I remember correctly) for the match. it is not to hard. I use an icom w32a, arrow, palm pilot to track pass and speaker mic. My fingers are long enough to hold the arrow next to my palm, the radio on top and the palm pilot on top of that. It leaves my other hand free for the speaker mic. I drop it when I have to write something and grab it up when ready to talk again. Velcro straps can be used to wrap everything up if you need to. 73...bruce

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Using the Arrow ant.
by tjjapha＠earthlink.net 19 Aug '07

19 Aug '07

For WB2LLP and others, For $30, I found a terrific collapsable tripod at a photo supplies store. It's 17" long when collapsed, and weighs 24 oz, no problem at all in adding that to my portable carrying bag. There is a standard 1/4" bolt on the tripod that is normally used to screw into a camera. The Arrow has a hole that accepts a 1/4" bolt. The problem with this is that the Arrow will tip over the whole thing because it extends far forward and unbalances the tripod. So, instead of screwing the ant onto the bolt, put a 1" threaded bushing on the bolt, and put a photographic C-clamp holder into the other side of the bushing. The holder also has a 1/4" bolt. Then the Arrow (or some other ant.) just gets center mounted in the C-clamp. There's no apparent diminution of the Arrow's effectiveness. Hope this is helpful to some. It returns at least 1 hand to use in logging! 73, Tony, N2UN

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Journal Delay
by Ed Long 19 Aug '07

19 Aug '07

Everyone, I must again ask for your patience. The July/August issue of the Journal, which should have been close to being in your hands by now, is still not at the printer. The reason is that I still have 3 full open pages without content. If you have any articles for the Journal please forward them right away. Thanks to all the authors that have contributed. I'll notify you when I release the issue to the printer. I apologize for the delay. 73, Ed Long WA4SWJ Editor, The AMSAT Journal

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ISS APRS
by Henk, PA3GUO 19 Aug '07

19 Aug '07

This evening I tried ISS APRS as I saw on www.ariss.net that in the past 2 days some traffic happened. U APRS VIA RS0ISS-4 Tried uplink 145.990, 145.200, 144,490, 145,800 but none of them worked. Good to see someone above playing with it though ! Henk, PA3GUO http://www.qsl.net/pa3guo

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Icom pre amps ???
by Richard -WA6ES 19 Aug '07

19 Aug '07

Has anyone tried the Icom preamps? I was planning on getting the pair. I have the 910H and just want to hear a little better, for the cost of course. Thanks Rick/WA6ES ____________________________________________________________________________________ Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games. http://sims.yahoo.com/

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New Zealand consultation on joint 2.3 GHz and 2.5 GHz auction
by Trevor 19 Aug '07

19 Aug '07

This item is indicative of the problems Amateur operation on 2.3 GHz faces around the world. In the cause of New Zealand I don't believe they access to spectrum below 2396 MHz anyway and from a brief read through the documents it looks as though they will continue to retain access to 2396-2400 MHz. New Zealand consultation on joint 2.3 GHz and 2.5 GHz auction http://www.southgatearc.org/news/august2007/nz_2ghz_auction.htm 73 Trevor M5AKA --------------- Daily Amateur Radio RSS News: http://www.southgatearc.org/ Email your news items to: editor at southgatearc.org News On Your Website: http://www.southgatearc.org/rss/index.htm News On Your PC: http://www.southgatearc.org/rss/newsreader.htm Upload Your News: http://www.southgatearc.org/news/your_news.htm --------------- ___________________________________________________________ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/

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any linear transponder birds flying?
by Eric Fort 19 Aug '07

19 Aug '07

The only birds I see flying for voice communications are oscar 50-52 which are fm single channel operation. did I miss something or are there no birds currently flying with active linear transponders? eric kg6kqt

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FO-29
by Patrick McGrane 19 Aug '07

19 Aug '07

Greetings I was active on FO-29 pass just now midway between europe and US. Pass started about 5:45 utc. I called CQ off and on for about 10 minutes with no callers. Very good link for 15 degree elevation pass. Thanks for recovering the satellite, it sounded very good. 73, Patrick N2OEQ

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eating crow about preamp
by Patrick McGrane 19 Aug '07

19 Aug '07

Greetings After 3 years and many dollars, I finally hear the FM satellites well. For the last year or so I used a mosfet preamp and a 7 element homebrew yagi canted up 15 degrees on a cheap tv rotator. Worked most of the time. This summer I had the dual band rig worked on. Its now very sensitive on UHF. George, wb2vun recommended the Advanced receiver research Gallium Arsenide preamp so I bought the switchable model to avoid burning it out with accidental transmissions. Now I have fantastic reception! So, to all those who told me to get a preamp, I'll say, you were right! but I'll also say, dont promise pie in the sky in the future. I learned many lessons. I'm also active on ao-7 and vo-52. I'm slowly preparing for the HEO's. I purchased a UHF all mode mobile rig from a freind and a VHF allmode on e-bay. I have preamps for both and some yagis. Looking forward to the success of P3E. I like the old proven design with the unity gain antenna arrays and the more sensitive receiver. Thanks to all the amsats for all the satellites. 73, patrick, N2OEQ

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eggbeater II antenna performance oscar 50-52
by Eric Fort 18 Aug '07

18 Aug '07

Can anyone here comment on the performance of the KO5E Eggbeater II antennas for use on oscar 50-52. Does anyone have personal experience with this configuration? I'd like to use them with my ft-847 as rotatable antennas are not an option here. Eric

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AO-51 Telemetry & WOD
by Clive Wallis 18 Aug '07

18 Aug '07

Hi, Recently I've been listening to Echo AO-51 on 435.150 MHz., and looking at some of the data in the KE4AZN telemetry archive. I've found a lot of information about the satellite, on the web, but still have a few questions. Is there a schedule of the sequence of when the various types of data packets are transmitted? Looking at the archived data TLM appears to be transmitted every 15 seconds. Some of the packets I've received, mention WOD. Is there a schedule for WOD capture and transmission? Is the WOD archived any where? Any help would be greatly appreciated. 73 Clive G3CWV Hitchin, North Hertfordshire, UK.

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Alaska BP-54 Calling
by Ken Farr 18 Aug '07

18 Aug '07

I will be looking for the easterly contacts this morning (17 Aug) on AO-51 during the 15:21 and 16:59 UTC passes from Anderson, Alaska. 73, Luci, KL1WE

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PDF attachments
by K & R Yoksh 18 Aug '07

18 Aug '07

Hi everyone, Sorry for the OT, but is anyone else receiving a large amount of PDF attachments via their Amsat email alias? Countless variations of the 'Greeting Card' PDF have been cluttering my inbox lately, mostly via my Amsat alias address. I do use a SPAM filter, and it is probably catching 70%, so you can imagine how much junk is coming in! Is this just affecting me, or do we need to ratchet up the SPAM filtering on the Amsat server? Thanks and 73, Kyle Yoksh KØKN Olathe, Kansas Amsat # 35249 VUCC Satellite # 150

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AO-7 LOG.
by John Hackett 18 Aug '07

18 Aug '07

Gentlemen, Once again, please be advised, The AO-7 Resource Page log was primarily designed to be an *ACTIVITY* log ... It was *NOT* meant to be a contest log. It was designed for those of us who are genuinely interested in the welfare of the satellite ... so we could see the *activity* on this bird ... *NOT* to see who can amass the most number of "points". Worst case scenario ... There is one particular station who has amassed well over 100 points in the last 3 months without having conducted one single QSO ... not !!! what the log was intended for. 73 John. <la2qaa(a)amsat.org> AO-7 Resource Page Admin:

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