[amsat-bb] Re: DTMF on HF?

Joe Leikhim rhyolite at leikhim.com
Fri Jan 10 14:31:19 PST 2014

Since DTMF has two tones for each number, it would seem possible that 
you could have some DSP detect the difference frequency of each pair and 
then either adjust its decoders or QSY the receiver's VCO to get a lock. 
There are a ton of small development boards like Raspberry PI that have 
hardware that might be able to do this.

Has anybody got the AMSAT-bb daily digest to work through their e-mail 
provider other than Gmail?

Joe Leikhim

Leikhim and Associates

Communications Consultants

Oviedo, Florida

JLeikhim at Leikhim.com



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