[amsat-bb] Re: Rusty AO-40
morsesat at optonline.net
Sun Aug 17 07:50:41 PDT 2008
Greg D. wrote:
>I think the 3731's LO is at 2256, so subtract that from the 2401.200 +/- downlink frequency. You should get something around 145.200. Doppler will shift that +/- about 50 kHz, and then you need to factor in your own unit's offset (my modified Drake is off by about another 50 kHz).
>I wish you had it running earlier today. I had the satellite all to myself during the 7:30pm PDT pass.
>>From: w7lrd at comcast.net
>>To: AMSAT-BB at amsat.org
>>Date: Sun, 17 Aug 2008 04:31:06 +0000
>>Subject: [amsat-bb] Rusty AO-40
>>My AO-40 (sobsob) techniques are really rusty. I am trying to find AO-51 S band downlink. I forget the conversion frequency on a 3731aa downconverter to the two meter band. With the pass duration I don't have a lot of time to look, which I did. Anyone aim me to the correct frequency?
>>73 Bob W7LRD
>>"if this were easy, everyone would be doing it"
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I agree. The 3731, if it was modified for 2 meters, output is 145.200
plus/minus doppler. Here on the East coast...I had a nice QSO with a
VE3 and K5 with the satellite without anyone else. I had blown my
original K5GNA unit as I transmitted into it with my Icom 910. I had a
spare-Mr. Murphy planning. Thanks to the AO-51 crew for putting a few
days of 2.4 so we can test out units for future ops(Hopefully!!??!!)
P.S. Get over AO-40 already---I miss it too but.... Let's keep on the
BOD to do the right stuff!!??!!
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