Re: [amsat-bb] AO-40 Beacon Freq

["John Stephensen, KD6OZH" <kd6ozh@xxxxxxx>]

Many downconverters will only be accurate to 10 parts per million or 24 kHz.
If the crystal is in an oven it should be adjustable to better than 1 ppm or
2.4 kHz.

73,

John
KD6OZH

----- Original Message -----
From: "Farrell Winder" <fwinder@one.net>
To: "AMSAT-bb" <AMSAT-bb@AMSAT.Org>
Sent: Saturday, 02 June 2001 13:15 UTC
Subject: [amsat-bb] AO-40 Beacon Freq


> Hi All,
>     I would appreciate learning what others are experiencing in frequency
> indication of A0-40's MB which is listed as 2401.323.  Today June 2, 2001
at
> 11:00 Z,  I noted  the reading from my 736  was 2401.314.9. At 12:00 Z
> reading was 2401.316.9 and at 13:00 Z  reading was 2401.320.4.  I have an
> SSB UEK-3000. Just curious if the difference from the published freq is
due
> all to doppler or other.  I have not seen a discussion on the calibration
of
> the various downconverters.  Tnx any comments, Farrell Winder, W8ZCF,
> Cincinnati, Ohio.
>
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