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

Satellite Weekend Webcast - GENSO
by Trevor 24 Jul '08

24 Jul '08

GENSO is a project to enable to automatic capture of telemetry from Amateur radio and educational satellites, see http://www.southgatearc.org/news/july2008/genso_webcast.htm AMSAT-UK publish a Newletter OSCAR News which is full of Amateur Satellite information. Join online at https://secure.amsat.org.uk/subscription/ For further details contact Jim Heck G3WGM Tel: +44 (0)1258 453959 Email: g3wgm(a)amsat.org Web: http://www.uk.amsat.org/ ---- 73 Trevor M5AKA __________________________________________________________ Not happy with your email address?. Get the one you really want - millions of new email addresses available now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html

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Re: Cal Poly Satellite, CP4 Beacon Help
by Mike Rupprecht 24 Jul '08

24 Jul '08

Hi Tim, i think MixW isn't very useful for decoding CP4 telemetry. You can't see the real byte values with MixW (only ASCII chars). There are two ways to get the telemetry: 1. Use MixW with option TNC emulation (needs an driver to loop back on serial ports) -> see MixW documentation 2. Use an TNC in KISS mode an log the incoming data to a file It's not so easy to get the right frequency because CP4 is jumping around some times. If you use an TNC you must be very fast to adjust the correct receiving frequency. CP4 is sending a short CW sequence before the telemetry. Tune you receiver at this moment so that the audio frequency of this cw signal is 2200Hz.. The following two beacons should be now decoded with your TNC. If you record the beacons you can play around with MixW. There is an option - Custum AFSK - where you can set the two AFSK frequencies manually. 73, Mike DK3WN Betreff: [amsat-bb] Re: Cal Poly Satellite, CP4 Beacon Help Gesendet: Do, 24. Jul 2008 Von: Tim Tuck<tim.tuck(a)penrith.net> > Jason Anderson wrote: > > [snip] > > Satellite Link Information > > ------------------------------ > > Frequency: 437.325Mz > > Modulation: FSK (but uses LSB cheat to make AFSK) > > Radio Mode: LSB (neccesary for LSB cheat) > > Baud Rate: 1200 > > Beacon rate: 1 beacon/minute (maybe change to 5 minutes if satellite > changes mode) > > > > > > Hi James, > > Happy to help with this but I'm a little confused as to what I should > set MixW to decode your data since I have 5 possible forms of 1200 baud > to set it to which are.... > > Standard 1200/2200 Hz > Zero Crossing 600/1200 hz > Zero Crossing 1200/2400 Hz > satellite PSK > FX469: 1200\1800 Hz > > I'm new to telemetry gathering, and I 'm currently collecting packets of > DelpiC3 with great success but they made it easy with their own program. > > regards > > Tim > > -- > > VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT > > _______________________________________________ > 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 > --- original Nachricht Ende ----

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Re: Field Day 2008 Totals
by Dave Guimont 24 Jul '08

24 Jul '08

>like how far back? I have them to 2002. how have you been? I for one >sure miss rag chewing on a heo. Yes, me to, Bruce, got my fingers crossed for P3E... No one has the original figures, when NSARC in San Diego won the very first contest on FD?? Bruce, how about listing some of the results on here from the first >>few FD's to make a comparison... > > > 73, Dave, WB6LLO > dguimon1(a)san.rr.com > > Disagree: I learn.... > > Pulling for P3E...

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Ao-27 Telemetry
by Robert Smith 23 Jul '08

23 Jul '08

Aloha Months ago I downloaded the AO-27 telemetry decoder for 1200 baud packet. I was unable to configure the decoder because I am using a sound card and packet engine for 1200 baud telemetry. Did, I miss something? Can the decoder be used with the AGWPE software? Mahalo. robert NH7WN in Honolulu

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PCSat and ISS
by Fred VE3FAL 23 Jul '08

23 Jul '08

Is anyone hearing anything from either of these birds? I have been monitoring 145.825 for over a week now and not a peep from them at all. I know the charging cycle (sun) is not favorable for PCSat but is anyone copying them? I know UISS is copying ok as I turn my mobile APRS rig on and it gets picked up by the program. Fred VE3FAL

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Field Day 2008 Totals
by Bruce 23 Jul '08

23 Jul '08

Field Day 2008 is over and I have just completed compiling the scores and writing the article. The results will be published in the next AMSAT Journal (not the May/June that is printing now) with some really nice photos that were sent in. At the same time, I will post the results through ANS. This year, we had 8 satellites used. There was even one QSO on AO-16. A total of 120 QSO's were reported and we had 17 stations submit scores. The most contacts were done on VO-52 this year. Behind that was AO-7. Here are some stats from previous years. 2005 2006 2007 2008 Satellites 8 7 5 8 QSO's 120 258 207 220 Stations 11 21 13 17 Watch your mailbox for your copy of the AMSAT Journal. 73...bruce -- Bruce Paige, KK5DO AMSAT Director Contests and Awards ARRL Awards Manager (WAS, 5BWAS, VUCC), VE Houston AMSAT Net - Wed 0100z on SkyScanner Satellite Radio Network on Galaxy-25 @97° West, Transponder 23 (12115 Vert), Symbol Rate: 22425, APID: 1794 (DVB Free To Air) Also streaming MP3 at http://www.amsatnet.com Podcast at http://www.amsatnet.com/podcast.xml or iTunes Latest satellite news on the ARRL Audio News http://www.arrl.org

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go-32 techsat 435.225?
by Mr Jeffrey L Ross 23 Jul '08

23 Jul '08

hi folks, is this the right freq for the downlink on go 32 techsat? 435225? 9600 baud packet. Having a hard time getting anything from this sat with the new rig, my dcd lite is blinking steady while nothin showing on the screen. I do know when the sat comes the dcd lite should stay on. Thanks in advance. kc8gkf

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Re: Yubileiny
by andy thomas 23 Jul '08

23 Jul '08

RS-30 transmits a CW beacon on 435.315 or .215 until she comes within the footprint of either the control station at Korolev north of Moscow or a station in Siberia responsible for the university experiments she carries. When within range of these stations she is switched to an FM AFSK stystem called DOKA-B. The grohjd sartation has DOKA-N. This is a direct FD modulation interface with the control board for the satellite. Looking at my recordings it's an 8 bit frequency division system idling at 40 bps with a synch frequency of 2400 Hz, which trips any wefax programme (but isn't wefax). I suspect it's just a PC WLAN system, frankly. I anticipate getting the decode sheet for the CW tlm "real soon now" and will post on the BB as soon as I get it. It is very similar to RS 22. (q.v.). I will be in Moscow over August 3/4 and will try and get further info about when she will switch mode to SSTV etc. 73 de andy G0SFJ __________________________________________________________ Not happy with your email address?. Get the one you really want - millions of new email addresses available now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html

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RS-30 Radio Sputnik 30 Yubileiny
by Frank Woolfe 23 Jul '08

23 Jul '08

Has anyone heard anything from this bird apart from the CW which I seem to receive on every pass over VK.. I thought this thing was supposed to TX SSTV and a voice Transmission of some description, if not what a waste of money!! Frank Woolfe VK5MFW

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FO29
by Robert Turlington 23 Jul '08

23 Jul '08

Hello all whilst monitoring the FO29 beacon frequency this afternoon I noticed a strange digital signal dopplering down. It was going from West to North ,observed LOS @ 14:21:10 utc, Due North ,435.780Mhz sounded very AO16 ish no other sat on my list was in range at the time but there again I don't have all of the sats in,I estimate the centre frequency as 453.900 Mhz.Regards Robert G8ATE _________________________________________________________________ Invite your Facebook friends to chat on Messenger http://clk.atdmt.com/UKM/go/101719649/direct/01/

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