April 2007 - AMSAT-BB - mailman.amsat.org

Re: The need for telemetry data -or what happened to FO-29-
by Tony Langdon 30 Apr '07

30 Apr '07

At 12:37 AM 5/1/2007, Stefan Wagener wrote: >My question is, can the satellite user community at large come up >with a system that allows the routine capturing of satellite >telemetry? Is there a role that AMSAT can play? What would it take? That seems like a good idea. With traditional equipment, that usually means having a second receiver following the beacon. Once the beacon is being received, appropriate software could be used to decode the telemetry. With the advent of SDRs now and into the not too distant future, there are more options. SDRs open the possibility of monitoring the entire passband, which means that the DSP filtering could simultaneously capture the telemetry, while you're working the satellite somewhere up the passband. This also opens other possibilities, such as automatic power control (now there's NO excuse to be an alligator!), while collecting that telemetry. Might be a good time for the software developers with DSP experience in the AMSAT community to team up with those working on SDRs. The beacon can also be used as a reference for Doppler correction, in case one's PC clock is out by several seconds. Telemetry servers such as the one that was setup for AO-40 could be a means of gathering all the telemetry, along with some form for offline distribution for those who don't have the Internet in their shack. The solutions for traditional radios aren't as neat, because of the second receiver requirement, and the need for it to have computer control in addition to the primary gear, but some clever people might be able to come up with something for the masses... 73 de VK3JED http://vkradio.com

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I: Re: TS-790A
by Francesco Grappi 30 Apr '07

30 Apr '07

Hi RoD, KD0XX I have a TS-790E (not TS-790A) with UT-10 1.2 ghz module installed, I can tune the frequency from 1240 to 1300 Mhz (like Jim, KQ6EA saw on your manual). 73" Frank IW4DVZ > -----Messaggio originale----- > Da: amsat-bb-bounces(a)amsat.org [mailto:[email protected]]Per > conto di Jim Jerzycke > Inviato: lunedi 30 aprile 2007 21.32 > A: stargatesg1(a)verizon.net; Amsat-Bb > Oggetto: [amsat-bb] Re: TS-790A > > > My manual says it will tune from 1240 to 1300MHz. > 73, Jim KQ6EA > > --- Stargate <stargatesg1(a)verizon.net> wrote: > > > Hi all, > > > > Will the UT-10 1.2ghz module for the TS-790A tune to > > the 1260-1270 satellite > > band? I only found one reference on > > Google but wanted confirmation from someone that > > actually has one. > > I might have the chance to trade an Icom IC-706MK2G > > for a TS-790 w/UT-10 and > > was wondering if > > it would be a good deal. > > > > 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" > > > > _______________________________________________ > > 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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Last FO-29 Pass / Telem freq & Mode?
by Steve Raas 30 Apr '07

30 Apr '07

Nothing herd.. Beacon wise or Downlink wise. The telemetry is on the beacon freq suposedly? Amsat web site is unclear to me where I would rx for it. This was by far my fav bird. Ill do anything I can to help out. -Steve Raas N2JDQ FN20vg

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FO-29 -- Lets see what happens !
by Steve Raas 30 Apr '07

30 Apr '07

Im not sure if any one has had an intermittent reception of FO-29's Dnlnk other than myself, I plan on trying to see if I can hear the transponder again this afternoon as I have a really high pass from 19:14z to 19:34 z with max el of 71 deg. As per my SatPc32 its either orbit # 52848 or 54849 I will be sending dashes at 40 watts until it reaches about 10 deg ele, then ill go to 2 watt mode. I will try and keep the Downlink freq near 435.850. Unfortunatally I have no way of recording properly. Listen in from 19:14z - 19:34 again.. if I do hear my Downlink.. and its not on 435.850 I will qsy my uplink to get on frequency. Steve Raas N2JDQ FN20vg

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Re: FO-29 -- Lets see what happens !
by George Henry 30 Apr '07

30 Apr '07

As Mak, SV1BSX, pointed out earlier (see below), the footprint of IO-26 has been overlapping that of FO-29 recently.... run a track on both to make sure you're not hearing IO-26's beacon. George, KA3HSW >Just keep in mind, today IO-26 has about the same >FOOTPRINT with FO-29. > > The usual TRAP (again)! > > So, if you monitoring around 435.795, the >strong-carrier is not from FO-29 but IO-26's beacon. > >73, Mak SV1BSX -----Original Message----- >From: Steve Raas <sraas(a)optonline.net> >Sent: Apr 30, 2007 1:48 PM >To: Amsat-BB(a)amsat.org >Subject: [amsat-bb] FO-29 -- Lets see what happens ! > >Im not sure if any one has had an intermittent reception of FO-29's Dnlnk >other than myself, I plan on trying to see if I can hear the transponder >again this afternoon as I have a really high pass from 19:14z to 19:34 z >with max el of 71 deg. As per my SatPc32 its either orbit # 52848 or 54849 >I will be sending dashes at 40 watts until it reaches about 10 deg ele, then >ill go to 2 watt mode. I will try and keep the Downlink freq near 435.850. >Unfortunatally I have no way of recording properly. > > > >Listen in from 19:14z - 19:34 again.. if I do hear my Downlink.. and its not >on 435.850 I will qsy my uplink to get on frequency. > > > > > >Steve Raas

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FO-29 Off in April and May 2004--Similar?
by DeYoung James 30 Apr '07

30 Apr '07

Greetings, In review of older AMSAT-BB submissions I find that FO-29 was off several times, starting apparently in April 2004 through May 2004, for an unknown cause. It was reported by the command team as not being from under-voltage, the most popular guess, but from an unknown cause. As far as I can tell no reason was reported on AMSAT-BB, but the satellite was recovered. Similar to our 2007 events quite possibly. 73, KG4QWC __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Planning
by john heath 30 Apr '07

30 Apr '07

A great suggestion from Ed KL7UW The solution is to use a SDR on the IF of your current radio. Then software can provide DSP, filtering, spectral and waterfall displays, decoding...etc. I am testing the SDR-IQ using the 28-30 MHz output of the DEMI 144/28 converter. 144-MHz is very commonly used IF for microwave converters. Does anyon know of a good 70cms to 10m downconverter? 73 John G7HIA

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FO-29
by ALVARO GAVIRIA 30 Apr '07

30 Apr '07

Hello, FO-29 over Colombia El 90º at 8:13 UTC Continuous carrier heard affected by Doppler on 435.800 MHz USB S3 on TS2000(x) No CW, No transponder response 73 HK4MKE

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Re: Non-Technical Question
by MARTHA SARAGOVITZ 30 Apr '07

30 Apr '07

All AMSAT-TAPR dinner tickets should be picked up at the AMSAT booth on Friday. 73- Martha ----- Original Message ----- From: "AMSAT Website" <www(a)amsat.org> To: <martha(a)amsat.org> Sent: Monday, April 30, 2007 1:46 AM Subject: Non-Technical Question > > This message originated from the AMSAT website > > Sender: Dan Sherwood Email: wa6pzk(a)sbcglobal.net > Host: adsl-69-105-53-103.dsl.irvnca.pacbell.net > > Subject: Non-Technical Question > > Message: > I sent an order for 3 tickets to the TAPR/AMSAT banquet at Dayton this > year. > > Transaction ....0002737 (3 tickets, $105) > > Do you folks mail the tickets to me, or do we pick them up somewhere at > the Hamvention?? > > So far, nothing has been sent to me. > > Thanks, > Dan and Adrienne Sherwood WA6PZK / WA6YEO > > Phone Number: (661) 264-1863 Best Time to Call: 10:00 am Pacific > > (end of message) > > > Problems with this message? Email to w0eec(a)amsat.org >

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Planning
by Jeff Davis, KE9V 30 Apr '07

30 Apr '07

Sat Friends, Have you noticed the confluence of satellites scheduled to be launched in 2009? With the recent SSETI-ESEO news it seems that there is a good chance that P3E, SSETI and maybe even Eagle will fly in the 2009 time frame (plus/minus the normal delays). While that seems like a long time to have to wait, it also provides the opportunity to begin planning a new groundstation that can take advantage of the 2009 "Feast of Satellites." It's been years since the AO-40 failure and over a decade since AO-13 went sub-orbital. I can't be the only satellite enthusiast who could certainly do with a complete station overhaul? I hope we will see much discussion on the -BB about assembling new stations, new antennas and accessories. Since a person could invest a lot of money on equipment, it would be useful to have some published guidelines. Perhaps a series of articles in the Journal and other publications will be forthcoming as we all prepare for a new generation of satellite fun! Just something to think about. Having to wait such a long time for these projects to come to fruition is frustrating but it also offers enough time to begin saving for new equipment and assembling and testing everything required so we are all ready to use the new birds when they appear on the horizon. 73, Jeff KE9V

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