February 2008 - AMSAT-BB - mailman.amsat.org

Re: SSET trying to work GO-32 on 9600
by Bob Bruninga 16 Feb '08

16 Feb '08

> I'm trying to send a short e-mail message > through GO-32 for the SSET without any luck. > ... I can receive the downlink on 435.225 > without any problem. For the uplink I'm on > 145.825. I think that's the problem. The uplink for GO-32 is on 145.85 for normal APRS packet(tocall of APRS or APxxxx) and 145.93 for Mic-E formatted position reports with position comment set to Committed or higher (D7 or D700).. Please see details on: http://www.ew.usna.edu/~bruninga/GO32-ops.html And also, be satisfied if you see your email in the downlink, because I dont think we still have enough IGates listening to make sure it gets into the Internet system. Hope that helps. Bob, Wb4APR

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na1ss qsl manager
by francesco messineo 16 Feb '08

16 Feb '08

Hello, are the informations about european qsl manager on the following page correct? http://www.arrl.org/ARISS/ariss-qsl.html I found a different address for F1MOJ on www.qrz.com. Btw, I'm sending a QSL for a 2 years old contact, better late than never I think :-) Thanks and 73 Francesco IZ8DWF

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Re: Since We Are Off Topic Somewhat....
by Tom Clark, K3IO 16 Feb '08

16 Feb '08

Bill Jones asked: > While discussing this topic of orbital decay, I wonder if someone would > comment on the apparent anomoly whereby a sat in leo that encounters drag > actually speeds up (since as it's altitude decreases, the orbital speed > increases), and how this might be a factor in the comparison of the heating > effects on an object that decays gradually from orbit vs an object like the > shuttle that is taken out of orbit by actually reducing it's speed with > thrust. I have my own intuitive theories on this but would like to hear more > informed opinions. What confuses people is that the orbital PERIOD (minutes/orbit) decreases with drag, and hence its reciprocal (measured in units like like orbits/day) increases. As the satellite gives up kinetic energy to heat, it falls into a lower orbit, where it must move faster. The relation is that the square of the period is proportional to the cube of the size of the orbit. All this is is embodied in Kepler's 3rd law (see http://en.wikipedia.org/wiki/Kepler%27s_laws_of_planetary_motion) which the Wiki states as: * "The squares <http://en.wikipedia.org/wiki/Square_%28algebra%29> of the orbital periods <http://en.wikipedia.org/wiki/Orbital_period> of planets are directly proportional <http://en.wikipedia.org/wiki/Proportionality_%28mathematics%29> to the cubes <http://en.wikipedia.org/wiki/Cube_%28arithmetic%29> of the semi-major axes <http://en.wikipedia.org/wiki/Major_axis> (the "half-length" of the ellipse) of their orbits. This means not only that larger orbits have longer periods, but also that the speed of a planet in a larger orbit is lower than in a smaller orbit." An animated "movie" of Kepler's 3rd law can be seen at http://people.scs.fsu.edu/~dduke/kepler3.html <http://people.scs.fsu.edu/%7Edduke/kepler3.html>. 73, Tom

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UO-11
by Chris Bloy 16 Feb '08

16 Feb '08

Hi Clive, UO-11 not heard on the early morning UK pass, will try again on the evening passes. Thanks, Chris

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Finally got PCSAT :-)
by Chris Bloy 16 Feb '08

16 Feb '08

Hi all + Bob, Finally got beaconed by PCSAT using my TH-D7 on a early morning pass! Gave me a great joy in seeing my packet after trying for so many passes! M0DQO-8/W3ADO-1*/WIDE2-2/SGATE>UPUPXW>UI,R,F0 (1200 baud): 'wa*l .K\> I also happened to be recording the pass and decoded the packet using MixW afterwards to confirm my packet incase Findu didn't get it... I have checked and my packet is/was in the list :) BTW.. 5 Watts into an Arrow in the back garden.. Thanks, Chris, M0DQO

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Satellite Simulated Emergency Test 2
by Robert Bruninga 16 Feb '08

16 Feb '08

Next Satellite Simulated Emergency Test (SSET), 9-18 Feb? PCSAT-1 will enter full sun on 9 Feb and will join ISS on 145.825 as a relay for 1200 baud SSET Emails. GO-32 is also available for 9600 baud Email (if we have sufficient Satgates). See the web page on how to use ANY TNC, and no special software to send an Email: http://www.ew.usna.edu/~bruninga/sset.html That should work well for Packet. Now, for voice... Now that we have AO-16, combined with SO-50 and AO-51 and others for voice, these plus the digital birds give us a total of 36 passes per day opportuntiy for getting a simulated emergency message out via amateur satellite. I think we need to exercise our EmComm capabilities and demonstrate them. I'd like to suggest that we come up with a plan for how best to use our voice birds for this kind of test too. I'd suggest that we come up with NET Control operators who will take checkin's. Check-ins will report these items: TX power, Gain, portable or not, emergency power or not, location. Anyone want to take charge and move out? Bob, WB4APR > -----Original Message----- > From: aprssig-bounces(a)lists.tapr.org > [mailto:[email protected]] On Behalf Of Robert Bruninga > Sent: Friday, November 09, 2007 9:56 PM > To: 'TAPR APRS Mailing List' > Subject: [aprssig] Simulated Emergency Test via Satellite 50% > status report. > > This weekend should be good for getting your Satellite - > Simulated Emergecny Test message through. See > http://www.ew.usna.edu/~bruninga/sset.html. PCSAT is half way > through its 2 week long Fall full-ops period. > > Last weekend, we saw over 75 users per 24 hour period who > exchanged about 250 messages a day plus 23 SSET emails. Then > during the week, this tapered to about 50 a day with 15 more > SSET emails and 3 via ISS. PCSAT is coming up in the late > afternoon now in the Northern Hemisphere. See live user downlink > on http://pcsat.aprs.org . > > It is easy to send a Satelite Emergenncy Email without any > special hardware or software other than a TNC (or soundcard > software). Just set your outoing Email in your Btext and set > BEACON to once a minute. Enable it in the afternoon between > about 1400 to 1800 local standard time in the USA (or 5 to 9 > AM). Set on 145.825 using a digi path of UNPROTO APRS VIA > WIDE2-2 at 1200 baud. > > Or just set your Kenwood D7 or D700 to send the message > automatically from the front panel. > > Check your email after that time period and see if you got the > message. The format is in the above SSET web page. If you've > done it via PCSAT, and or ISS, then try it via GO-32 at 9600 > baud. Though you can do that at your leisure after PCSAT dies > again and GO32 then is the only reliable bird. See > http://www.ew.usna.edu/~bruninga/GO32-ops.html > > Bob, WB4APR > > > > -----Original Message----- > > From: Bob Bruninga [mailto:[email protected]] > > Sent: Sunday, November 04, 2007 10:50 PM > > To: bruninga(a)usna.edu; 'Amsat-BB' > > Subject: RE: [amsat-bb] Simulated Emergency Test via Satellite > > > > Simulated Satellite Emergency Test: > > > > I now see 74 PCSAT-1 users in the last 24 hours on > > http://pcsat.aprs.org > > > > I cannot count up the SSET emails till I get to work on > > Monday, but of those 74 users, 50 of them have sent about > > 822 messages via PCSAT-1 or ANDE or GO32 or maybe even ARISS > > over the weekend (2-4 Nov). > > > > By the way, this is NOT just APRS hardware and software. > > Anyone with a TNC and a radio can send their SSET checkin > > email. Just set your TNC BTEXT as follows: > > > > BT :EMAIL....:[email protected] checking in for SSET!... > > > > Oh, replace the 4 dots after the word EMAIL with four spaces. > > The above format is an APRS message that will get ingested > > into the global APRS system and will get emailed to > > your_EMAIL (or any other email address you specify). > > > > Also set UNPROTO APRS VIA ARISS > > > > Set beacon to once every minute if attended until you see > > success. If unattended, set to once every 5 minutes. > > > > If successful, you will receive that message via your EMAIL. > > This demonstrates your ability to enter a EMAIL and or > > position and or status from anywhere on the planet in case of > > emergency TO any email address.. > > > > Join the SSET (Satellite Simulated Emergency Test)! > > > > WB4APR, Bob > > > > > Having heard no objections to the proposed Satellite > > > Simulated Emergency Test, we are proceeding with > > > the APRS satellite part of the test: > > > http://www.ew.usna.edu/~bruninga/sset.html > > > > > > -----Original Message----- > > > What is needed for this new opportunity is encouraging > > > a mind set... Towards... emeregency preparedness. > > > > > > I am thinking AMSAT (we) need to do more emergency > > > service preparations and tests with our satellites. > > > Not only will that test our capabilities, but we > > > will also need to demonstrate our emergency response > > > capabilities as a group to help sell the new > > > P4 concept to the supporters of this new Geo initiative. > > > > > > Can we work up a SSET, Satellite Simulated Emergency > > > Test? Something AMSAT can do to get this bandwagon > > > rolling. Here's a web page on what I am thinking: > > > > > > http://www.ew.usna.edu/~bruninga/sset.html > > > > > > SATELLITE SIMULATED EMERGENCY TEST: > > > > > > For the APRS satellites, everyone with an APRS station, > > > or D7 or D700 mobile would try to send an EMAIL > > > reporting location and status via satellite from the > > > field. > > > > > > For the PACSAT message birds, similarly send a message > > > reporting status from the field. > > > > > > For the Voice birds, have a net control take check-in > > > status from as many field stations as possible. > > > > > > I hope I'm not not re-inventing someone's wheel. SET > > > was in October and I am not a routine satellite > > > operator, but I do think we need field preparedness. > > > This is not another Field day contest. But this is > > > different. We will have good powerful net controls > > > taking as many low-power check-ins as possible to > > > demonstrate our capability to handle emergency traffic > > > from anywhere. By my count, there is a LEO satellite > > > pass on average at least once an hour most of the day > > > long. Plenty of time during a 2 day test for eveyone > > > to checkin. > > > > > > With PCSAT-1 returning to service for the next two > > > weeks, I would propose to do this during the 2nd week > > > in November. And to schedule it monthly from then on. > > > Sign up net controls for the FM birds, etc... > > > > > > Field Operations IS part of this new P4 opportunity. > > > Lets start exercising... > > > > > > And you can do this all from your mobile without a PC! > > > > > > See my draft web page... > > > http://www.ew.usna.edu/~bruninga/sset.html > > > > > > Bob, WB4APR > > > > > > > > _______________________________________________ > aprssig mailing list > aprssig(a)lists.tapr.org > https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig >

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Schematic wanted on Henry 3004A
by Farrell Winder 16 Feb '08

16 Feb '08

Does anyone have a Henry 3004A Amplifier set up for ATV or EME ? I am looking for a schematic and tuning details. Please reply off line direct to my E-Mail address, fwinder(a)fuse.net. Many thanks, Farrell Winder, W8ZCF, Cincinnati, OH

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Sat Shoot Question
by hobergenix 16 Feb '08

16 Feb '08

I was wondering if this satellite is totally dead. And if its not could commands be sent to the satellite to fire the steering rockets and burn up the fuel? I think I read that its still transmitting a beacon signal and that could be used to help any rocket shot at the satellite to help guide the rocket. I am just wondering if this is nothing more than a big show to say the USA can shoot down satellites like China did? Mike N6IMF

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Navy to shoot down satellite
by Robert Bruninga 15 Feb '08

15 Feb '08

NASA news conference is saying the Navy will try to shoot down the soon to deorbit spy satellite. Should be fun! Bob, WB4APR

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Re: Since We Are Off Topic Somewhat....
by David Barber 15 Feb '08

15 Feb '08

Is it not possible to engineer a craft with a much lower re-entry speed thus reducing friction?

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Since We Are Off Topic Somewhat....
by Joe 15 Feb '08

15 Feb '08

Hi All,, Since we are somewhat off topic for the moment with the conversation about the bird to come down shortly.. Ok, the question is, and i've asked it to several other places, and yet to even get a answer, The question is,,, Space shuttle launches,, starts off at sea level, and in less than ten minutes goes from zero to 17K MPh (or so) And gets to orbital altitude. Time to come down,, the de-orbit burn happens to slow it down just a bit to cause the orbit to more or less decay.. It's at orbital altitude.. and moving at about 17K MPh.. 45 minutes or so later it's back on the ground and moving at zero MPh.. So in actuality it comes down from space even slower than going up. Yes? 45 min vs 10. Ok, same goes with any satellite,, How come, going up,, 0 to 17K MPh through the atmosphere, all is fine.. BUT coming down,, 17K MPh to 0 unless it has protection it will burn up in the atmosphere from friction with the air. why is it different? Joe WB9SBD & NSS

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AO-51 schedule for Feb 2008
by Gould Smith 15 Feb '08

15 Feb '08

Hi Keith, The table schedule does not easily show the dual band operation that we are running. Please see the text description @ http://www.amsat.org/amsat-new/echo/CTNews.php ,although I just noticed that this page is still broken. We are looking for a new web master. AO-51 is in V/US mode except for Tues to Thur when L/US. We haven't seen much activity on the L/US mode and are discussing whether to continue that mode the rest of the month. Standard mode for Feb 2008 145.92 FM up / 435.300 & 2401.2 FM down 73, Gould, WA4SXM ----- Original Message ----- From: "AMSAT Website" <www(a)amsat.org> To: <gouldsmi(a)bellsouth.net> Sent: Monday, February 11, 2008 11:41 AM Subject: Field Operations Question > > This message originated from the AMSAT website > > Sender: Keith Email: n8xd(a)arrl.net > Host: firetest.iti.net > > Subject: Field Operations Question > > Message: > Hi, > I'm having a little trouble finding the AO-51 Schedule for this month. It > doesn't appear to be on the website. Can you help? > Thanks! > --Keith > > (end of message) > > > Problems with this message? Email to w0eec(a)amsat.org

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Since We Are Off Topic Somewhat....
by Alan Sieg WB5RMG 15 Feb '08

15 Feb '08

> Time to come down,, the de-orbit burn happens to slow it down just a bit > to cause the orbit to more or less decay.. I don't think orbital decay would be a good descriptor. Orbiter does the de-orbit burn about half-a-rev away, then a nose dive. The de-orbit burn puts the brakes on big time, then after it turns nose forward, a slight push towards the earth brings it on down fast. An orbital decay is very gradual, and takes many orbits... > So in actuality it comes down from space even slower than going up. > Yes? 45 min vs 10. Right, as others have said - going up through the dense atmosphere is the slowest part of the trip. They even hold back throttle until it has passed maxQ, or maximum dynamic shake, just before passing the 'sound-barrier'. After that, the air is much thinner and with less fuel on board - and the acceleration increases very rapidly. > Ok, same goes with any satellite,, Not really. Launch may be the same - but a de-orbiting satellite can take weeks/months/years of slowing/losing altitude enough to encounter the upper atmosphere. That's when the trouble starts. > coming down,, 17K MPh to 0 unless it has protection > it will burn up in the atmosphere from friction with the air. You hit the nail on the head. Orbiter has protection. Major protection. Reinforced carbon-carbon leading edge treatment on the wings and nose. Ceramic tiles on the belly provide the required capacity to shed all that kinetic energy as heat. The thermal padding over the rest of the orbiter is to protect the vehicle structure from the heat passing by. The shock wave just millimeters out in front of the orbiter is hotter than the surface of the sun... I remember seeing Wayne Hales describing this on NASA-TV after the TPS repair job a few flights back in 2007... De-orbiting satellites have no TPS, and as soon as they encounter atmospheric ionization - it cooks off pretty quickly. Only major chunks survive, and then only as really hot blobs. Think of the bright meteors during a storm like the Leonids - most of those are no bigger than a grain of sand - but come in around 70 km/sec ... It should be interesting to see what the media does with this story. Personally, I suspect the fuel would cook off before impact with some large body of water. But if we let it do that, we couldn't flex THE muscle. It would take to long to program an EKV target model for one of the big mid-course interceptors... so perhaps this approach will score some points. We gotta catch up you know. We've never destroyed a satellite 'on purpose' . . All you gotta do is get right in front of it, and let it hit you. An explosive just adds to the show. Waiting for Atlantis to get back is good idea .!. I think I heard that they did extend joint-ops for one day. Maybe early next week they'll let the Navy have a crack or two at "Shoot-Sat". Thanks (this wasn't supposed to get this long) /;^) -- <- WB5RMG is Alan Sieg * http://wb5rmg.somenet.net ->

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Re: Best coax for 2 meters
by Ken Owen 15 Feb '08

15 Feb '08

Hi folks: I get a lot of questions from folks about the best coax types for weak signal/satellite work. I found a good source for LMR400 (equivalent) which I use for both my two meters and 430 antennas. It's overkill for two meters though, since I have only have about a 50 foot run. I know someone who is planning a run of about 40 feet and he's using a pre-amp at the antenna. What would the group recommend for the two-meter coax? Thanks, N6KTH

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Satellite Shoot Down
by hobergenix 15 Feb '08

15 Feb '08

Maybe they should just farm out the job to the Chineese and get it done for a fraction of the cost and right the first time! Mike N6IMF

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Keplerians receive
by Vincenzo Mone 15 Feb '08

15 Feb '08

Hi to the list, I am having problem receiving the keplerians in from the Amsat mailing list. As I have subscribed for receive the keps, I always get in my mailbox only the amsat format ones. I do not get the 2 lines ones. I have checked in my spam folder but there is no message from amsat in that folder. I have also gone on the spam folder directly from the web but also there, the spam folder is empty. Any ideas please? 73 de Enzo IK8OZV EasyLog 5 BetaTester EasyLog PDA BetaTester WinBollet BetaTester D.C.I. CheckPoint Regione Campania Skype: ik8ozv8520 *************************************** ***** GSM +39 338 9749786 ***** ***** SMS +39 338 9749786 ***** ***** FAX +39 328 7244294 ***** *** 2nd e-mail: vimone(a)tin.it *** ***************************************

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VERY IMPORTANT AMSAT INFO
by Martha 15 Feb '08

15 Feb '08

PLEASE BE ADVISED THAT THE AMSAT STORE IS TEMPORARILY OUT OF SERVICE DUE TO PROBLEMS CAUSED BY OUR SERVICE PROVIDER. WE WILL LET YOU KNOW WHEN IT IS BACK UP. -- 73- Martha

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(no subject)
by Frank H. Bauer 15 Feb '08

15 Feb '08

Joe, You had two questions in your query and I believe that one of them (the heating one) was been answered. Let me answer the second one: >So in actuality it comes down from space even slower than going up. >Yes? 45 min vs 10. The reason it seems to take longer---45 minutes----to come down (as compared to 10 minutes to reach orbit altitude), has to do with simple orbital dynamics. Or de-orbit dynamics in this case. As you know, the Shuttle (or any other vehicle that is purposely deborbited) performs a deorbit burn about half an orbit before landing. This burn actually changes the orbit perigee (lowest point in the orbit) to be well in the Earth's atmosphere. Or at or below ground altitude if enough propellant is available. Remember that the Shuttle orbit period is on the order of 90-100 minutes. So about 45 minutes after the deorbit burn the vehicle reaches perigee, enters an appreciable part of the atmosphere, and either burns up (many small satellites), or has sufficient thermal protection to land on the ground (Shuttle and large, dense pieces of satellites). My team used this technique to successfully deorbit the Compton Gamma Ray Observatory, resulting in a safe splashdown in the Pacific Ocean. We also used this technique in no atmosphere to purposefully crash the Lunar Prospector into the moon at the end of its mission. Once a vehicle starts to hit atmosphere (the mission control guys call this "entry interface") the heating and events to landing occur rather quickly..several minutes. Because as you start to touch the atmosphere, you continue to get deeper into the atmosphere because you are dipping further down to perigee altitude where the drag is much higher than at the entry interface. I hope this helps. 73, Frank Bauer, KA3HDO ------------------------------ Message: 8 Date: Thu, 14 Feb 2008 20:18:15 -0600 From: Joe <nss(a)mwt.net> Subject: [amsat-bb] Re: Since We Are Off Topic Somewhat.... To: "Ransom, Kenneth G. (JSC-OC)[BAR]" <kenneth.g.ransom(a)nasa.gov> Cc: AMSAT-BB <amsat-bb(a)amsat.org> Message-ID: <47B4F667.7030304(a)mwt.net> Content-Type: text/plain; charset=us-ascii; format=flowed Does anyone have the actual speeds at each altitude going up vs coming down? I tried to find such a graph, chart, table etc, to no avail, Joe Ransom, Kenneth G. (JSC-OC)[BAR] wrote: >The amount of time spent in the atmosphere at high velocity (I'd have to do some digging to give some real time data but basically it is as follows). > >One the way up, the rocket goes through the 100 km of air during the slower part of the change of velocity and spends very little time in the atmosphere at the higher velocity. > >On the way down, the object starts to encounter the atmosphere at maximum velocity and therefore maximum friction. It will be in the atmosphere for the a much longer period since it comes in a very shallow angle. The object will have that friction nearly the entire trip to the ground even though the drag from the atmosphere will slow the object. > >Kenneth - N5VHO > >________________________________ > >From: amsat-bb-bounces(a)amsat.org on behalf of Joe >Sent: Thu 2/14/2008 5:55 PM >To: 'AMSAT-BB' >Subject: [amsat-bb] Since We Are Off Topic Somewhat.... > > > >Hi All,, > >Since we are somewhat off topic for the moment with the conversation >about the bird to come down shortly.. >Ok, the question is, and I've asked it to several other places, and >yet to even get a answer, > >The question is,,, > >Space shuttle launches,, starts off at sea level, and in less than ten >minutes goes from zero to 17K MPh (or so) And gets to orbital altitude. > >Time to come down,, the de-orbit burn happens to slow it down just a bit >to cause the orbit to more or less decay.. It's at orbital altitude.. >and moving at about 17K MPh.. 45 minutes or so later it's back on the >ground and moving at zero MPh.. > >So in actuality it comes down from space even slower than going up. >Yes? 45 min vs 10. > >Ok, same goes with any satellite,, > >How come, going up,, 0 to 17K MPh through the atmosphere, all is >fine.. BUT > >coming down,, 17K MPh to 0 unless it has protection it will burn up >in the atmosphere from friction with the air. > >why is it different? > >Joe WB9SBD & NSS

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Re: SatPC32 with two Icom radio's...Help!!
by Mark L. Hammond 15 Feb '08

15 Feb '08

Hi Michael, Have you tried to use the auxiliary program found here: "C:\Program Files\SatPC32\TxControllerD\TXController.exe" I've used that to control 2 rigs at the same time...works pretty slick! Maybe you can skin the cat this way instead? Mark >Date: Thu, 14 Feb 2008 16:18:41 -0500 >From: "Michael A. Tondee" <mat_62(a)netcommander.com> >Subject: [amsat-bb] SatPC32 with two Icom radio's...Help!! >To: "Amsat-Bb@Amsat. Org" <amsat-bb(a)amsat.org> >Message-ID: <000601c86f4f$2cd38ba0$6500a8c0@w4hij> >Content-Type: text/plain; charset="iso-8859-1" > >Hi, >I'm hoping that someone on the board can help me because I'm having problems trying to get my setup to work. I am now the proud and happy owner of an Icom 820H and an IC706-MKIIG. I have built and tested a CT17 type interface circuit and I have it hooked up and working. The problem I'm having is setting up the dual radio configuration of SatPC32. I've read the help file many times over but I cannot seem to get the radio addresses configured as Erich states. Going by the file I'm assuming the addresses should read $42 $58 in the top address box and $58 $42 in the lower box. Nothing I do will make this happen. If I alter them to that configuration, as soon as I hit the "address ok" button the lower box changes and both both boxes read $42 $58. There is some reference to using the "mode menu" in the file but I can't figure out where it helps. Another question I have is, should the transceive option be turned off on one or both rigs? I've tried every combination I can think of . > This is what I'm trying to accomplish if possible, I want be able to use 2 meters on the 820 as the uplink and 10 meters on the 706 as the downlink. Mode A Oscar 7 in other words. I want to be able to use a 2 meters on the 820 as the uplink and use the 706 in concert with my mode S down converter for my downlink. I'd also like to be able to sometimes use the 820 as a stand alone sat rig without the 706 involved at all. That's the only configuration I can get working at all right now. I hope all of the above makes sense because I must just be totally missing something in the help file and I'm getting frustrated as I'm anxious to be back on the birds. >Tnx for any help and advice anyone can offer, >73, >Michael, W4HIJ > > >------------------------------ > >Message: 11 >Date: Thu, 14 Feb 2008 16:25:01 -0500 >From: "Robert Bruninga" <bruninga(a)usna.edu> >Subject: [amsat-bb] Re: Navy to shoot down satellite >To: "'Bruce Robertson'" <ve9qrp(a)gmail.com> >Cc: 'AMSAT-BB' <amsat-bb(a)amsat.org> >Message-ID: <02c501c86f50$0e803850$42577a83(a)ewlab.usna.edu> >Content-Type: text/plain; charset="US-ASCII" > >> Some media reports are comparing the US Navy shoot- >> down to the one that China conducted recently.. > >Yes, because the media are clueless and don't take the time to >investigate anything about details. > >> Do you have any knowledge or thoughts you can share? > >Only what was on NASA TV. The diffeences are enormous. > >The chinese satellite debris starting at 800 km will be in orbit >for the next 20 to 100 years during which time all of that >depris will pass through the orbits of thousands of other >satellites as it slowly decays. These thousands of debris from >the Chinese satellite, passing through the orbits of thousands >of satellites will likely result in a few additional collisions >that will in turn endanger additional satellites below them. > >The Navy Shoot down is going to be at about 130 miles, below ALL >other satellites and the ISS and the Shuttle. The majority of >the debris will burn up within the next 2 orbits (6 hours or >so).. But just to be sure, they are going to wait till after >the shuttle lands, because the shuttle does have to fly through >that altitude to get home. > > >Bob > > > >------------------------------ > >Message: 12 >Date: Thu, 14 Feb 2008 13:37:49 -0800 >From: "Jeff Yanko" <wb3jfs(a)cox.net> >Subject: [amsat-bb] Re: Shoot Sat - add >To: <amsat-bb(a)amsat.org>, "Clint Bradford" <clintbrad4d(a)earthlink.net> >Message-ID: <000b01c86f51$d87f3ab0$6501a8c0@QUECREEK> >Content-Type: text/plain; format=flowed; charset="Windows-1252"; > reply-type=original > >Is Red Fuming Nitric Acid another name for Hydrazine or are they 2 different >compounds? > >Jeff WB3JFS > > >----- Original Message ----- >From: "Clint Bradford" <clintbrad4d(a)earthlink.net> >To: <amsat-bb(a)amsat.org> >Sent: Thursday, February 14, 2008 12:55 PM >Subject: [amsat-bb] Shoot Sat - add > > >The satellite is outfitted with thrusters ? small engines used to >position it in space. They contain the toxic rocket fuel hydrazine, >which can cause harm to anyone who contacts it. Officials have said >there is about 1,000 pounds of propellent on the satellite. > >Known by its military designation US 193, the satellite was launched >in December 2006. It lost power and its central computer failed >almost immediately afterward, leaving it uncontrollable. It carried a >sophisticated and secret imaging sensor. > > >Clint Bradford, K6LCS / KAF3359 >909-241-7666 > > > > >_______________________________________________ >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 > > > > >------------------------------ > >Message: 13 >Date: Thu, 14 Feb 2008 13:37:42 -0800 >From: Clint Bradford <clintbrad4d(a)earthlink.net> >Subject: [amsat-bb] Re: Shoot Sat - add >To: "Jeff Yanko" <wb3jfs(a)cox.net> >Cc: amsat-bb(a)amsat.org >Message-ID: <A78A4735-B1C1-4397-A85D-2A8CCF1EF1E2(a)earthlink.net> >Content-Type: text/plain; charset=US-ASCII; format=flowed > > >http://en.wikipedia.org/wiki/Hydrazine > >Clint Bradford, K6LCS / KAF3359 >909-241-7666 > > > >On Feb 14, 2008, at 1:37 PM, Jeff Yanko wrote: > >> Is Red Fuming Nitric Acid another name for Hydrazine ... > > > > >------------------------------ > >Message: 14 >Date: Thu, 14 Feb 2008 16:46:38 -0500 >From: "James C. Mankin" <n5x(a)psu.edu> >Subject: [amsat-bb] Re: Shoot Sat - add >To: Jeff Yanko <wb3jfs(a)cox.net> >Cc: Clint Bradford <clintbrad4d(a)earthlink.net>, amsat-bb(a)amsat.org >Message-ID: <47B4B6BE.8060704(a)psu.edu> >Content-Type: text/plain; charset=windows-1252; format=flowed > >They are different. Nitric Acid is an oxidizer while Hydrazine (N2H4) >is a fuel or (probably in this case since no fuel >has been mentioned) a monopropellent. > >Jim KB3KJ > >Jeff Yanko wrote: >> Is Red Fuming Nitric Acid another name for Hydrazine or are they 2 different >> compounds? >> >> Jeff WB3JFS >> >> >> ----- Original Message ----- >> From: "Clint Bradford" <clintbrad4d(a)earthlink.net> >> To: <amsat-bb(a)amsat.org> >> Sent: Thursday, February 14, 2008 12:55 PM >> Subject: [amsat-bb] Shoot Sat - add >> >> >> The satellite is outfitted with thrusters ? small engines used to >> position it in space. They contain the toxic rocket fuel hydrazine, >> which can cause harm to anyone who contacts it. Officials have said >> there is about 1,000 pounds of propellent on the satellite. >> >> Known by its military designation US 193, the satellite was launched >> in December 2006. It lost power and its central computer failed >> almost immediately afterward, leaving it uncontrollable. It carried a >> sophisticated and secret imaging sensor. >> >> >> Clint Bradford, K6LCS / KAF3359 >> 909-241-7666 >> >> >> >> >> _______________________________________________ >> 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 >> >> >> >> > > > >------------------------------ > >Message: 15 >Date: Thu, 14 Feb 2008 14:03:07 -0800 >From: "Jeff Yanko" <wb3jfs(a)cox.net> >Subject: [amsat-bb] Re: Shoot Sat - add >To: "James C. Mankin" <n5x(a)psu.edu> >Cc: Clint Bradford <clintbrad4d(a)earthlink.net>, amsat-bb(a)amsat.org >Message-ID: <000b01c86f55$6178f740$6501a8c0@QUECREEK> >Content-Type: text/plain; format=flowed; charset="Windows-1252"; > reply-type=response > >OK. Just checking up on it. N2H4 doesn't need an oxidizer to function and >can be used as a monopropellant. > >Jeff WB3JFS > > >----- Original Message ----- >From: "James C. Mankin" <n5x(a)psu.edu> >To: "Jeff Yanko" <wb3jfs(a)cox.net> >Cc: <amsat-bb(a)amsat.org>; "Clint Bradford" <clintbrad4d(a)earthlink.net> >Sent: Thursday, February 14, 2008 1:46 PM >Subject: Re: [amsat-bb] Re: Shoot Sat - add > > >They are different. Nitric Acid is an oxidizer while Hydrazine (N2H4) >is a fuel or (probably in this case since no fuel >has been mentioned) a monopropellent. > >Jim KB3KJ > >Jeff Yanko wrote: >> Is Red Fuming Nitric Acid another name for Hydrazine or are they 2 >> different compounds? >> >> Jeff WB3JFS >> >> >> ----- Original Message ----- >> From: "Clint Bradford" <clintbrad4d(a)earthlink.net> >> To: <amsat-bb(a)amsat.org> >> Sent: Thursday, February 14, 2008 12:55 PM >> Subject: [amsat-bb] Shoot Sat - add >> >> >> The satellite is outfitted with thrusters ? small engines used to >> position it in space. They contain the toxic rocket fuel hydrazine, >> which can cause harm to anyone who contacts it. Officials have said >> there is about 1,000 pounds of propellent on the satellite. >> >> Known by its military designation US 193, the satellite was launched >> in December 2006. It lost power and its central computer failed >> almost immediately afterward, leaving it uncontrollable. It carried a >> sophisticated and secret imaging sensor. >> >> >> Clint Bradford, K6LCS / KAF3359 >> 909-241-7666 >> >> >> >> >> _______________________________________________ >> 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 >> >> >> >> > > > > > > >------------------------------ > >Message: 16 >Date: Thu, 14 Feb 2008 17:21:40 -0500 (Eastern Standard Time) >From: "Gary Schuchardt" <gschuchardt(a)gp.hrcoxmail.com> >Subject: [amsat-bb] Re: FT-847 Serial Port Communications >To: "Keith N4ZQ" <n4zq(a)netzero.net> >Cc: AMSAT-BB(a)amsat.org >Message-ID: <47B4BEF4.000061.02424@EAGLEWINGS> >Content-Type: Text/Plain; charset="iso-8859-1" > >Hi Keith, > >Everything is now working. I have been experimenting with programs >developed by Bob Freeth, G4HFQ at http://WWW.g4hfq.co.UK. This includes the >FTBasicMMO (memory management) and FTBCAT to control all the features of my >FT-847 rig. You can contact Bob, at mailto:[email protected], if you >have any questions and he will respond very quickly to inquiries. I am >pleased with the software, support and pricing too. The other program that >I tested was the FT-847 SuperCat, but price was a little high for me. The >software is compatible to many of types of transceivers; however, I am only >concerned my current rig. I wanted to wait, until I had a chance to test the >programs before I said anything about what software I was using. I went >ahead and paid a very small fee for one of the program and some others were >free. I have about 36 channels already programmed into my rig memory for >regional UHF and VHF repeaters. Now, I am going to store various >operational and semi-operational satellite frequencies into the FT-847 in >some type of efficient arrangement or ordering to save precious time >changing from one to the other. G4HFQ has various programs that look real >interesting after I get my main object done. > >I have installed a new null modem cable and rearrange Com 1 and Com 2 so >that the later can take care of my MixW logging and digital needs. I hope >you find this information helpful. Keep in touch and God Bless. Thanks >again for your help. > >Gary >N0EZH >Chesapeake VA >CEM Retired > >-------Original Message------- > >From: Keith N4ZQ >Date: 2/11/2008 10:44:06 AM >To: gschuchardt(a)gp.hrcoxmail.com >Subject: Re: [amsat-bb] FT-847 Serial Port Communications > >Hey Gary, > >I've been looking for a long time a replacement FT-847 memory management >program ,since I long ago lost one written by a Frenchman called Edit. > >Would you please tell me what program you are using to read and write memory >information to the Yaesu FT-847? > >Glad you got your issue with port communication taken care of. > >TU Keith N4ZQ > > >-- "Gary Schuchardt" <gschuchardt(a)gp.hrcoxmail.com> wrote: > > >I have a problem involving the 9 pin serial port on the back of my FT-847 >Yaesu transceiver. When I try to use a null modem cable between the rig and >my PC on either COM 1 or 2, the rig will not respond to compatible rig >controller (CAT) nor a memory management program. The COM ports have been >tested as well as the use of two different PCs. Neither null modem cable >works. I have tried to use the Menu feature on the FT-847 to match baud rate >between radio and PC COM port. Has anyone had a problem like this with the >Yaesu FT-847? I would appreciate knowing. > >Thank you. > >Gary N0EZH > >_____________________________________________________________ >Discount Online Trading - Click Now! >http://thirdpartyoffers.netzero >net/TGL2221/fc/Ioyw6i4tFWrs5EOdVH0fo99R7R5RKcIKFcFJKwy9HXVCvnsNtYiNh2/ > > > >------------------------------ > >Message: 17 >Date: Thu, 14 Feb 2008 17:32:11 -0500 >From: "John Marranca, Jr" <KB2HSH(a)amsat.org> >Subject: [amsat-bb] Re: Best coax for 2 meters >To: amsat-bb(a)amsat.org >Message-ID: > <8edcdb130802141432i351e7e57r52b4edd07b3455b4(a)mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > >Ken... > >I have decent results with RG-6/U. > >It's cheap, it has decent attenuation figures at 144 MHz, and can be bought >at Home Depot. > >And the /U rating means it can be buried. > >I'm sure some will differ with my way of thinking, but I have a flat 1:1 >match on my eggbeaters...and couldn't be happier. (My FT-817ND is happy, >too) > >John KB2HSH > >-- >_______________________________ > > >John Marranca, Jr >PBX Technician/Shop Steward CWA Local 1122 >BN Systems, Inc >Orchard Park, NY >(716)972-2006 > > >------------------------------ > >_______________________________________________ >Sent via amsat-bb(a)amsat.org. Opinions expressed are those of the author. >Not an AMSAT member? Join now to support the amateur satellite program! >http://amsat.org/mailman/listinfo/amsat-bb > > >End of AMSAT-BB Digest, Vol 3, Issue 83 >*************************************** Mark L. Hammond [N8MH]

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Schematic wanted on Henry 3004A
by Farrell Winder 15 Feb '08

15 Feb '08

Does anyone have a Henry 3004A Amplifier utilizing an 8938 tube set up for ATV or EME ? I am looking for a schematic and tuning details. Please reply off line direct to my E-Mail address, fwinder(a)fuse.net. Many thanks, Farrell Winder, W8ZCF, Cincinnati, OH

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Re: Errant Spy Satellite
by Clint Bradford 14 Feb '08

14 Feb '08

>>...Navy to shoot down satellite... Project name: Shoot Sat Clint

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Re: Best coax for 2 meters
by John Marranca, Jr 14 Feb '08

14 Feb '08

Ken... I have decent results with RG-6/U. It's cheap, it has decent attenuation figures at 144 MHz, and can be bought at Home Depot. And the /U rating means it can be buried. I'm sure some will differ with my way of thinking, but I have a flat 1:1 match on my eggbeaters...and couldn't be happier. (My FT-817ND is happy, too) John KB2HSH -- _______________________________ John Marranca, Jr PBX Technician/Shop Steward CWA Local 1122 BN Systems, Inc Orchard Park, NY (716)972-2006

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Re: FT-847 Serial Port Communications
by Gary Schuchardt 14 Feb '08

14 Feb '08

Hi Keith, Everything is now working. I have been experimenting with programs developed by Bob Freeth, G4HFQ at http://WWW.g4hfq.co.UK. This includes the FTBasicMMO (memory management) and FTBCAT to control all the features of my FT-847 rig. You can contact Bob, at mailto:[email protected], if you have any questions and he will respond very quickly to inquiries. I am pleased with the software, support and pricing too. The other program that I tested was the FT-847 SuperCat, but price was a little high for me. The software is compatible to many of types of transceivers; however, I am only concerned my current rig. I wanted to wait, until I had a chance to test the programs before I said anything about what software I was using. I went ahead and paid a very small fee for one of the program and some others were free. I have about 36 channels already programmed into my rig memory for regional UHF and VHF repeaters. Now, I am going to store various operational and semi-operational satellite frequencies into the FT-847 in some type of efficient arrangement or ordering to save precious time changing from one to the other. G4HFQ has various programs that look real interesting after I get my main object done. I have installed a new null modem cable and rearrange Com 1 and Com 2 so that the later can take care of my MixW logging and digital needs. I hope you find this information helpful. Keep in touch and God Bless. Thanks again for your help. Gary N0EZH Chesapeake VA CEM Retired -------Original Message------- From: Keith N4ZQ Date: 2/11/2008 10:44:06 AM To: gschuchardt(a)gp.hrcoxmail.com Subject: Re: [amsat-bb] FT-847 Serial Port Communications Hey Gary, I've been looking for a long time a replacement FT-847 memory management program ,since I long ago lost one written by a Frenchman called Edit. Would you please tell me what program you are using to read and write memory information to the Yaesu FT-847? Glad you got your issue with port communication taken care of. TU Keith N4ZQ -- "Gary Schuchardt" <gschuchardt(a)gp.hrcoxmail.com> wrote: I have a problem involving the 9 pin serial port on the back of my FT-847 Yaesu transceiver. When I try to use a null modem cable between the rig and my PC on either COM 1 or 2, the rig will not respond to compatible rig controller (CAT) nor a memory management program. The COM ports have been tested as well as the use of two different PCs. Neither null modem cable works. I have tried to use the Menu feature on the FT-847 to match baud rate between radio and PC COM port. Has anyone had a problem like this with the Yaesu FT-847? I would appreciate knowing. Thank you. Gary N0EZH _____________________________________________________________ Discount Online Trading - Click Now! http://thirdpartyoffers.netzero net/TGL2221/fc/Ioyw6i4tFWrs5EOdVH0fo99R7R5RKcIKFcFJKwy9HXVCvnsNtYiNh2/

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Shoot Sat - add
by Clint Bradford 14 Feb '08

14 Feb '08

The satellite is outfitted with thrusters — small engines used to position it in space. They contain the toxic rocket fuel hydrazine, which can cause harm to anyone who contacts it. Officials have said there is about 1,000 pounds of propellent on the satellite. Known by its military designation US 193, the satellite was launched in December 2006. It lost power and its central computer failed almost immediately afterward, leaving it uncontrollable. It carried a sophisticated and secret imaging sensor. Clint Bradford, K6LCS / KAF3359 909-241-7666

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SatPC32 with two Icom radio's...Help!!
by Michael A. Tondee 14 Feb '08

14 Feb '08

Hi, I'm hoping that someone on the board can help me because I'm having problems trying to get my setup to work. I am now the proud and happy owner of an Icom 820H and an IC706-MKIIG. I have built and tested a CT17 type interface circuit and I have it hooked up and working. The problem I'm having is setting up the dual radio configuration of SatPC32. I've read the help file many times over but I cannot seem to get the radio addresses configured as Erich states. Going by the file I'm assuming the addresses should read $42 $58 in the top address box and $58 $42 in the lower box. Nothing I do will make this happen. If I alter them to that configuration, as soon as I hit the "address ok" button the lower box changes and both both boxes read $42 $58. There is some reference to using the "mode menu" in the file but I can't figure out where it helps. Another question I have is, should the transceive option be turned off on one or both rigs? I've tried every combination I can think of. This is what I'm trying to accomplish if possible, I want be able to use 2 meters on the 820 as the uplink and 10 meters on the 706 as the downlink. Mode A Oscar 7 in other words. I want to be able to use a 2 meters on the 820 as the uplink and use the 706 in concert with my mode S down converter for my downlink. I'd also like to be able to sometimes use the 820 as a stand alone sat rig without the 706 involved at all. That's the only configuration I can get working at all right now. I hope all of the above makes sense because I must just be totally missing something in the help file and I'm getting frustrated as I'm anxious to be back on the birds. Tnx for any help and advice anyone can offer, 73, Michael, W4HIJ

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