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Re: Interference on AO-51

Thanks for the recording Reinhard.

The use of the tone is an issue I intend to investigate further as time allows. It will not prevent QRM on the uplink however...it only masks it's source. The offending signals will still be there and capable of interfering with your uplink, only with the tone enabled you won't hear them. We have the same problem here, only sometimes it is amateurs operating out of the bandplan and we can sometimes get a callsign and contact them. That's something that cannot be done with the tone enabled.

Just a point to ponder.

73, Drew KO4MA

-----Original Message-----
>From: Reinhard Richter <r.richter@dj1km.de>
>Sent: May 3, 2006 5:58 AM
>To: glasbrenner@mindspring.com
>Cc: amsat-bb@amsat.org
>Subject: Interference on AO-51
>Hello Drew,
>I have worked the second morning pass today. I made a recording of a part
>of the pass. Besides my cq call (in vain) you can hear in the first part
>Russian voice and telephone dial tones, and in the second part Spanish
>voices. A 67 Hz PL tone would surely keep the qrm on the uplink away.
>You may download my recording from www.dj1km.de/ao51.zip (5 MB).
> Reinhard, DJ1KM
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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