At 9/6/2008 07:26, you wrote: >I bet I can take *any* controller and connect >it in such a way it will not decode DTMF tones. ;-> > >That said, two things to remember about Motorola DTMF mics. First, the >bias was already mentioned. If the mic isn't getting voltage, how could >it ever produce DTMF tones? Second, many times the Motorola mics are >wired to NOT produce tones when the mic button is pressed. I modified >mine to produce them when the PTT is in.
Ditto on the Kenwood KMC-18. Drove me nuts until I realized that. Must be a "commercial" thing, as I don't know of any ham DTMF mic that works that way. Bob NO6B
