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DTMF Tones

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jsterba

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Aug 22, 2006
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I was listening to the Volusia County, Florida EDACS system today and heard someone sending 3 DTMF tones out on a test channel (VCWIDE 3). The first two always sounded the same with the last one being different. The user didn't identify themselves so I was wondering what this could be. Does an EDACS system have the ability to allow remote control via DTMF tones similar to a repeater? It could be someone playing around and testing radios, but I thought I would ask anyway.
 

WayneH

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Your master site
Yes, pretty much any technology operating in an analog FM mode can use DTMF for signaling. The receiving device could care less how the actual frequencies are managed for use. Digital, via a voice channel, is totally different.
 
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