AMSAT-BB May 2007

157 participants
244 discussions

Call for Papers--2007 ARRL/TAPR Digital Communications Conference

by Ford, Steve, WB8IMY

Technical papers are solicited for presentation at the 26th Annual ARRL and TAPR Digital Communications Conference to be held September 28-30, 2007 in Hartford, Connecticut. These papers will also be published in the Conference Proceedings (you do NOT need to attend the conference to have your paper included in the Proceedings). The submission deadline is July 31, 2007. Please send papers to: Maty Weinberg ARRL 225 Main St Newington, CT 06111 or you can make your submission via e-mail to: maty(a)arrl.org Papers will be published exactly as submitted and authors will retain all rights. 73 . . . Steve, WB8IMY ARRL

9 years, 11 months

Trip to CN79, CN69, CO70, and possibly CO60 in Canada.

by Patrick Green

These squares seem rare to me. I was wondering what the desire for them would be. I would have to make a special effort to hit CO60 but I would do it if there are a bunch of people that want it. Let me know. I would be operating FM sats and APRS packet with my HT and Arrow from these areas. 73 de Pat --- KA9SCF. Amsat #35741

15 years

Using a scanner to hear the FM sats?

by Michael Tondee

Due to some money issues, I had to sell all my sat gear including my beloved TS-2000X. I've been going through some of my old gear and rustled up a Radio shack VHF/UHF scanner that covers ham frequencies. Do you think it would be possible to hear the FM sats with it? I have a homebrew 11 element linearly polarized yagi and I can still track the sats via computer rotator control. I can make it where I have a short run of cable to the antennas since I don't have preamps anymore. I'm also wondering about using some 75ohm RG6 quad shield satellite TV cable for receiving. Would this be better or worse than 9913 with the scanner? Kind of grabbing at straws here but I'm wondering if anyone thinks it would work before I invest too much time into it. Tnx and 73, Michael, W4HIJ

15 years, 1 month

Listen for AMSAT at Rochester Hamfest

by Richard Crow

Greetings Everyone, Again this year, AMSAT will have a booth at the Rochester (NY) Hamfest on June 1st, 2nd, and 3rd. The following Satellite Demo(s) are planned: AOS LOS Date Day Sat UTC UTC --------- --- ----- ---- ---- 01Jun2007 Fri AO-27 1912 1926 01Jun2007 Fri AO-27 2051 2105 02Jun2007 Sat AO-51 1404 1418 02Jun2007 Sat VO-52* 1435 1446 02Jun2007 Sat VO-52* 1611 1624 02Jun2007 Sat AO-27 1844 1857 02Jun2007 Sat AO-27 2022 2037 03Jun2007 Sun AO-51 1325 1339 03Jun2007 Sun AO-51 1504 1516 03Jun2007 Sun VO-52* 1630 1642 --------------------------------- * For VO-52, I will be on (or about) 145.910 MHz The callsign will be "N2SPI/Portable". If you're on any of these satellites this weekend, listen for us, give us "a shout", and say hello to crowd observing the demo. We typically get a dozen, or more, interested observers. If you're interested in the partially homemade portable station I'll be using for the FM LEO(s), go to "http://www.amsat.org/amsat-new/information/faqs/crow". The radios I use are discussed at the end of the articles. For the Hamfest, the Hamtronics LNK-450 Preamp and Alinco DJ-S40T UHF HT will be clipped to my belt and pants pocket on my right side. The Yaesu FT-1802M (or ICOM IC-2100) 2m "mobile" will be clipped to my belt on my left side. It will be powered by a homemade NiMH battery pack of 11 "high-current" sub-C cells in my left pants pocket which easily puts out 10 amps at 14V. For SSB on VO-52, I'll be using a Yaesu FT-290 and FT-790 both clipped to my belt. This allows me to walk about looking for the best location to access a given satellite. -Richard, N2SPI

15 years, 1 month

RAFT keps 2 minutes late now

by Henk, PA3GUO

RAFT is ~2 minutes ahead of current keps. Henk PA3GUO May 29 22:50 UTC

15 years, 1 month

RAFT on 29 May 21:12 UTC

by Adrian Done

I recorded some signals from RAFT yesterday night few hours before the end of activity. I did not decoded it. The .wav file (edited) is available at 62.231.112.73/raft/index.html 73 from Romania, Ady YO8AZQ & Cezar YO8TLC

15 years, 1 month

Goodbye message from RAFT to Bob WB4APR

by Henk, PA3GUO

Hi Bob, A special goodbye voice-message from RAFT to you: http://home.vianetworks.nl/users/hamoen/pa3guo/raft_voice_goodbye.mp3 Henk, PA3GUO (for the record - recorded same days ago already)

15 years, 1 month

L-Band satellites

by Andy Brian

Hello, where are the difference between Inmarsat and Thuraya satellite sytem, frequency and mode etc. or this is the same system. thanks in advance

15 years, 1 month

'Rare' grid squares...

by Ernest Erickson

Pat: I too, would be very interested in those grids as well, so count me in as another fellow requester for those areas, along with any others that desire them. In other words....PICK ME! PICK ME! Thank you! Sincerely Ernest, KA9UCE, DM43ha Ernest A. Erickson, KA9UCE Applied Electronic Communications, AEC 10711 East Verbina Lane Florence, AZ. 85232 520.723.0602 aec9823(a)yahoo.com ____________________________________________________________________________________ Food fight? Enjoy some healthy debate in the Yahoo! Answers Food & Drink Q&A. http://answers.yahoo.com/dir/?link=list&sid=396545367

15 years, 1 month

Fwd: RAFT Decay Prediction

by Bob Bruninga

>Date: 28 May 2007 10:29 GMT >From: "Zimmer Harro" >Subject: RAFT Decay Prediction > > The current forecast for # 29661 RAFT with the > ELSETS 07147.183... - 07148.164... > with SFX 065 and ap 005 shows with the special > perturbation method the decay on May 30, > 13:33 UTC +/- 06 hours descending over > 43.64°N and 214.96°E. Looks like we get one more shot... Lets everyone that is interested to park their ground station pointing at AOS for RAFT and recording packets. This is a great opportunity to see the heat up of an AMSAT as it re-enters. Do NOT bother with automatic tracking, since arrival will be much earlier than any keps you can get.. If you can APRS-IGate the packets then that is even better, sinec we can all see the telemetry then in real time. Bob, WB4APR

15 years, 1 month

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AMSAT-BB May 2007