[aprssig] Automatic omni DF query

Jason KG4WSV kg4wsv at gmail.com
Tue Feb 10 06:24:29 CST 2009

On Tue, Feb 10, 2009 at 5:45 AM, Chuck Gooden <Chuck.Gooden at comcast.net> wrote:
> If I am not mistaken, AM is used on 121.5 and Doppler systems will not
> be effective on AM signals.

I thought doppler DF needed an FM receiver (since it induces PM by
antenna switching) no matter what the modulation of the received

Doesn't matter here, as Scott's talking about received signal strength
indicator, not DDF.


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