Re: [amsat-bb] Itune.cfg info

[Anthony Monteiro <aa2tx@xxxxxxxxx>]

Hi Jim,

I'll add to Don's comment. You need to make sure the
"rxconverter" parameter in the config file is the same as
your actual local oscillator frequency. For a 2400 to 144
converter, the nominal is 2256.000 MHz but most of the converters
are between a few KHz off to way, way, off-frequency. They also
tend to be temperature sensitive. You might need to tweak the
parameter to get the beacon to be nominally at 145.323.

InstantTune also depends on having good Keplerian elements and
an accurate PC clock.

Tony AA2TX
---
At 06:10 PM 4/17/02 -0400, Don Woodward wrote:

>The difference in the .323 and where you receive it is a combination of 
>Doppler
>and your downconverter's frequency error as well as the downconverter's drift
>depending on temperature.
>
>Don Woodward
>KD4APP
>AMSAT 33535
>kd4app@amsat.org
>http://www.w-ent.com/ao40/index.htm
>
>
>----- Original Message -----
>From: "Murray" <w4lwt@knology.net>
>To: "Amsat" <amsat-bb@AMSAT.Org>
>Sent: Wednesday, April 17, 2002 5:16 PM
>Subject: [amsat-bb] Itune.cfg info
>
>
>Would like to know the parameters being used in the Itune.cfg file, for
>AO-40.  The default beacon was .323. I never receive the beacon at that
>freq. That makes the doppler wrong. Just wondering if there is a
>different set of parms that need to be used.
>
>tnx for time   Jim W4LWT
>--
>http://www.knology.net/~w4lwt
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