RE: [amsat-bb] Freq Adjust AO-51

["Greg D." <ko6th_greg@xxxxxxxxxxx>]

Farrell,

The 2m uplink is very tolerant of doppler shift, and in general can be left 
at it's unadjusted setting (145.920).  Just track the downlink manually by 
watching the meter with the select set to DISC/ALC.

But, you can use one a number of programs to adjust both the uplink and 
downlink automatically.  I use either FODTrack in a DOS window on Win98, or 
Predict on Linux (with a homebrew CAT client).  There are many others.  Look 
at the FODTrack documentation for the very simple CAT interface - I think 
it's a generic transistor and a couple of other non-critical parts.

Greg  KO6TH




----Original Message Follows----
From: "Farrell Winder" <fwinder@fuse.net>
To: "AMSAT" <amsat-bb@amsat.org>
Subject: [amsat-bb] Freq Adjust AO-51
Date: Fri, 8 Apr 2005 16:06:32 -0400

Does anyone have a good scheme for easily  adjusting the frequencies on a
Yaesu 736R for both 2 m and 70 cm during a pass of AO-51? I am presently
manually adjusting the freqs to compensate both the 2 m Tx  and 70 cm Rx.  
Tnx
any suggestions for tying the 2 bands together to  approximate a  pre
established (and possibly automate)  the correct uplink  freq while 
adjusting
for optimum downlink signal.  This appears to be  difficult as there will be
some differences depending on the observer with relation to the footprint 
but
the FM Mode of  AO-51 will be somewhat tolerant. .   Farrell Winder, W8ZCF
Cincinnati, Ohio.
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