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Re: Fodtrack doppler "jitter"?



FODTrack 2.6 was released to fix just this problem.   You can download it
from the amsat site.

73,
Joe
ka0yos@amsat.org

----- Original Message -----
From: "Greg D." <ko6th_greg@hotmail.com>
To: <amsat-bb@AMSAT.Org>
Sent: Saturday, November 10, 2001 3:03 PM
Subject: [amsat-bb] Fodtrack doppler "jitter"?


> Has anyone else seen this?  If so, is there a fix?
>
> I've tried using FODTRACK to drive the doppler tracking for AO-40
> telemetry receiption, but it keeps changing its mind on what the
> correct frequency should be, +/- 0.1 khz, back and forth, every few
> seconds.  That changes the frequency of the rig in the middle of
> receiving a block, killing a few bits in the process (bad CRC).
> I can't use AO40Rcv's mike up/down, since the rig's an ICOM R-7000
> scanner (no mike!).  I still use FODTRACK to drive the Az/El rotor,
> and to get the initial frequency set on the radio.  Then tweek by
> hand.  FODTRACK's been working just fine on the LEO birds, driving
> my Yaesu 736R.
>
> I'm using FODTRACK version 2.5, on a Pentium-3 667mhz PC, under
> Windows 98SE.
>
> 73s,
>
> Greg  KO6TH
>
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