[amsat-bb] Re: simple auto track

Erich Eichmann erich.eichmann at t-online.de
Fri Jun 29 23:15:37 PDT 2007

Hello Bob,
you wrote: >Tracking these LEO's when using S band is difficult.

During the past days I tried full automatic frequency control with AO-51 in
mode V/S. For the S band downlink I used my IC-910H with the 13cm / 2m down
converter that I had used with AO-40. So, for the VHF uplink I had to use a
2nd radio. I used my FT-847.  I steered the IC-910H with SatPC32 directly
and the FT-847 with the aux. program TxController.

That worked flawlessly in several passes and would have worked also with
other radios, i.e. an FT-817 or IC-706 for downlink and/or uplink. I could
work the satellite without any manual frequency corrections.

My entries in Doppler.SQF for downlink, uplink and converter offset are
2401200, 145880 and 2256000.

73s, Erich, DK1TB

----- Original Message ----- 
From: <w7lrd at comcast.net>
To: <amsat-bb at amsat.org>
Sent: Friday, June 29, 2007 8:54 PM
Subject: [amsat-bb] simple auto track

> Hello
> What is the simplest auto track software/hardware combination for auto
> tracking a G5400?  I am a non "digi" type and am looking for simple plug
> and play.  I can use IT or SatPac32.  Tracking these LOE's when using S
> band is difficult.
> --
> 73 Bob W7LRD
> AMSAT member 28498
> Seattle
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