At 10:47 AM 09/03/08, you wrote: >I am constructing one of the "repeater-builders friends'", and am in >need of a DTMF pad, or suggestions. I have a Motorola DTMF mic that I >picked up from someone @ work. I have tried it direct into the >controller, through a pot, and through an amplifier w/ a matching >transformer on it. The controller is an ARCOM 210 and it does not >seem to be picking up the tones no matter what I try. The controller >is brand new, and was purchased assembled and tested, so I can only >assume that it is fully functional. > >Any help or suggestions would be appreciated. > >Jeremy >KB3BAM
There may be nothing wrong with the Arcom - the mic may not be making DTMF. What model number of microphone is it? And what is it designed to plug into? Micor, Maxtrac, Spectra? First get the Moto DTMF microphone working. All it should take is a clean source of + voltage and a capacitor. Once you can hear DTMF into a test speaker you can go further. Mike WA6ILQ
