Experimenting with DTMF

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  • Updated 1 year ago
Is there a way to listen to the microphone audio at the radio when using the Maestro?
I would like to try some simple remote control functions using DTMF while operating with the Maestro. I would turn the RF to 1-3 watts at the Maestro and then acoustically couple the DTMF tones into the handheld mic.
At the radio end I want to remove the tones and then decoding them is easy. I thought it would be as simple as using the headphone jack at the radio but while using the Maestro I hear nothing at the radio. Any ideas ??

Photo of WB9IXS


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Posted 1 year ago

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Photo of Mike - WB8CXO

Mike - WB8CXO

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Jim, Hang a cheap 10 meter (or any receiver) with an attenuator (or other loose coupling) to the xcvr port and transmit to it. Touch tones available at receiver. You can also use a Yaesu mobile mic that has a Touch-Tone built in to eliminate extra TT encoder and acoustical coupling. There’s probably a much better way but I can’t think of one ATM... And the Maestros in the cold truck and I won’t be in the shack to experiment till late. Good Luck!