April 2010 - AMSAT-BB - mailman.amsat.org

WD9EWK @ Sierra Vista AZ hamfest, Saturday (1 May)
by Patrick STODDARD (WD9EWK/VA7EWK) 26 Apr '10

26 Apr '10

Hi! On Saturday, 1 May 2010, I will have an AMSAT table at the Cochise Amateur Radio Association's Larry Warren Hamfest in Sierra Vista AZ. This is a half-day event, and one I have attended for the past two years. During the hamfest, WD9EWK should be on the air for demonstrations on the following passes: 1340-1353 UTC on AO-51 1406-1426 UTC on FO-29 1642-1655 UTC on VO-52 1807-1825 UTC on HO-68 For AO-51, I will be on the 145.920/435.300 MHz repeater. For FO-29 and VO-52, I will try to start out calling CQ in SSB approximately 10 kHz above the center frequency of these transponders. HO-68 will be in FM until its scheduled shutoff at 1825 UTC, which will be near the predicted LOS time at the hamfest site. If you are able to work these passes and hear me, please feel free to give me a call. The hamfest site is in grid DM41vn. If you work WD9EWK on Saturday, there's no need to send me a QSL card to get my card. Just e-mail me the QSO details, and - if you're in the log - I will gladly send out a QSL card. 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/

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WD9EWK from DM52/DM53, Friday (30 April)
by Patrick STODDARD (WD9EWK/VA7EWK) 26 Apr '10

26 Apr '10

Hi! On my way (sort of) to the hamfest in Sierra Vista AZ on Saturday (1 May), I will make a detour to the DM52/DM53 grid boundary in Graham County AZ northwest of Safford on Friday (30 April) afternoon. I stopped in this area twice around this time last year, and I don't think anyone else has been on from DM53 since then. I am planning to stop there for the AO-27 passes around 2003 and 2144 UTC Friday, and - depending on the view of the eastern sky - I might attempt the AO-51 pass at 2214 UTC. The 2214 UTC AO-51 pass has a maximum elevation of 5 degrees at that location, so I may only have a few minutes during that pass if I can hear the satellite at all. After these passes, I will move south and stop somewhere in DM52 for the AO-51 pass at 2348 UTC. Depending on how things go on Friday, I could either return to the DM51/DM52 boundary where I stopped a few weeks ago, or possibly head to the Arizona/New Mexico state line (grid DM52lf) where I worked from last October. Since I will be up and on the air from the hamfest in Sierra Vista early Saturday morning, I do not plan on working anything else after these passes on Friday. As always, if you work me on Friday, there's no need to send me a QSL card. Just e-mail me the QSO details, and - if you're in the log - I will gladly send out a QSL card. 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/

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AO-51 now in dual repeaters, V/U and L/U
by Andrew Glasbrenner 25 Apr '10

25 Apr '10

I just completed the weekly mode change for AO-51 just after 2200Z. We are now running dual repeaters on 145.920/435.300 and 1268.700/435.150. The 67Hz PL access is on for the V/U pair with a 2 minute period. Power output is 410mw for either repeater. AO-51 will be reentering eclipses this week or next, and we will need to frequently interrupt the L/U repeater for telemetry. The modulation will be left low on the repeater to make the switch from data to voice easier. I'll try to do this primarily on the morning passes over the East Coast, but it could happen on any US pass. It's important for us to keep close tabs on the power situation during this period. 73, Drew KO4MA AMSAT-NA VP Operations

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Fwd: Next HV Satcom net
by Stuart Balanger 25 Apr '10

25 Apr '10

---------- Forwarded message ---------- From: Stuart Balanger <wa2bss(a)gmail.com> Date: Sun, Apr 25, 2010 at 2:15 PM Subject: Next HV Satcom net To: amsar-bb(a)amsat.org Hi all, The next "HV Satcom" group net is Thursday april 29, 8PM on the 146.97 Mt. Beacon Repeter (or 2400 UTC), & ther is an Echolink node of N2EYH-L node! More info: www.hvsatcom.org 73,.Stu

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Re: AO 27 ?
by Clint Bradford 25 Apr '10

25 Apr '10

Gould quickly contacted me to re-calibrated my slide rule - I was 1/2 correct earlier - it is almost +/-10kHZ on the 440 side of a 45 degree pass of an FM bird. Here's the actual equation to calculate Doppler shift ... http://tinyurl.com/dopplershift Clint, K6LCS

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AO 27 ?
by Ted 25 Apr '10

25 Apr '10

AMSAT shows downlink at 436.795 AO27 site shows downlink at 436.797 What is the correct frequency?

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Re: AO 27 ?
by Clint Bradford 25 Apr '10

25 Apr '10

On the 440 side during a 45-degree pass, there can be almost a 10kHZ deviation - well, plus or minus about 5kHZ from center - that must be accommodated for the Doppler effect. So either of those two (actually BOTH) could/should be programmed on your receive side, along with a few more to accommodate Doppler. Clint, K6LCS http://www.work-sat.com

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G5500 Rotor Problems
by Angelo Glorioso 25 Apr '10

25 Apr '10

With field day coming around the corner, I took the time to work on my spare G5500 rotor setup. I knew from earlier this year, I had to put my spare azimuth rotor to replace the one that stopped working. I took the Azimuth rotor apart and come to find out that it seems the nylon gear that is attached to the motor itself is slipping big time. I can manually move the other gears and they seem to be working fine. I will take the rest of the rotor apart tomorrow, but I was wondering if anyone else has come across this problem??? Since I am unable to see without taking the rest of the rotor apart, anyone know how this gear is attached to the shaft of the motor?? Anyone have any ideas where I might get another gear if necessary?? I see why Yaesu will only sell the whole motor attachment know for 200.00 plus dollars. 73 de Angelo

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HO-68 Schedule - 25-02 May 2010
by Alan Kung 25 Apr '10

25 Apr '10

25 Apr. 2010 ================================ 17:30...Turn On--FM India, Africa, Middle East, Europe,NA 16:45...Turn Off 19:00...Turn On--FM Africa,Europe,Middle East,NA 19:45...Turn Off 23:25...Turn On--FM NA,North Asia,East Asia,Oceania 24:10...Turn Off 26 Apr. 2010 ================================ 01:21...Turn On--FM North Asia,East Asia,South Asia 01:34...Turn Off 02:10...Turn On--SSTV South America,NA,North Asia 02:55...Turn Off 19:00...Turn On--SSTV Africa,Europe,NA 19:45...Turn Off 27 Apr. 2010 ================================ 00:10...Turn On--FM South America,NA,North Asia 00:55...Turn Off 01:55...Turn On--FM South America,NA,North Asia 02:40...Turn Off 02:47...Turn On--FM North Asia, East Asia, South Asia 03:00...Turn Off 09:15...Turn On--FM Oceania,Asia,Europe 10:00...Turn Off 17:00...Turn On--FM India,Middle East,Europe,NA 17:45...Turn Off 18:45...Turn On--FM Africa,Europe,NA 19:30...Turn Off 28 Apr. 2010 ================================= 02:34...Turn On--FM North Asia,East Asia,South Asia 03:50...Turn Off 10:45...Turn On--FM Oceania,East Asia,North Asia,Europe 11:30...Turn Off 13:25...Turn On--FM NA,South America,Europe 14:10...Turn Off 18:30...Turn On--Packet Africa,Europe,NA 19:15...Turn Off 22:35...Turn On--Packet NA,North Asia,East Asia,Oceania 23:20...Turn Off 29 Apr. 2010 ================================= 02:16...Turn On--FM North Asia,East Asia,South Asia 02:32...Turn Off 05:50...Turn On--FM NA,North Asia,Middle East, Europe,Africa 06:35...Turn Off 10:30...Turn On--FM Oceania,Asia,Europe,NA 11:15...Turn Off 16:25...Turn On--Packet Africa,India,Middle East,Europe,NA 17:10...Turn Off 18:15...Turn On--Packet Africa,Europe,NA 19:00...Turn Off 30 Apr. 2010 ================================ 00:05...Turn On--Packet South America,NA,North Asia 00:50...Turn Off 02:00...Turn On--FM North Asia,East Asia,South Asia 02:16...Turn Off 10:15...Turn On--FM Oceania,Asia,Europe 11:00...Turn Off 17:55...Turn On--SSTV India,Africa,Europe,NA 18:50...Turn Off 22:00...Turn On--FM NA,North Asia,Oceania 22:45...Turn Off 01 May 2010 ================================ 00:50...Turn On--Packet South America,NA,North Asia 01:30...Turn Off 01:39...Turn On--FM North Asia,East Asia,South Asia 01:54...Turn Off 10:00...Turn On--FM Oceania,Asia,Europe,NA 10:45...Turn Off 17:40...Turn On--FM Africa,Europe,NA 18:25...Turn Off 02 Apr. 2010 ================================ 00:30...Turn On--FM South America,NA,North Asia 01:15...Turn Off 03:16...Turn On--FM North Asia,East Asia,South Asia 03:28...Turn Off 06:45...Turn On--FM North Asia,Europe,Africa 07:30...Turn Off 09:40...Turn On--FM Oceania,Asia,Europe 10:25...Turn Off 73 Alan Kung, BA1DU HO-68(XW-1) Project Manager www.camsat.cn

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Re: SO-67
by Tony Langdon 24 Apr '10

24 Apr '10

At 05:44 AM 4/25/2010, Vincenzo Mone wrote: >Hello to all, >right a few seconds ago I had a good pass of SO-67 >but unfortunately I did not hear nothing on >the frequency of 435.345 on FM mode. >Please I would like to know if it is alive or not. >Can I hear something? SO-67 is in commissioning, and is currently not available. 73 de VK3JED / VK3IRL http://vkradio.com

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