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Slightly OT - Need Motorola Speaker/Mic Details and Wiring
Hopefully someone who reads this group will be familiar with these
radios, Motorola T7400 FRS/GMRS. The alt.radio.family newsgroup has degenerated to an unintellible level. My friend and I have a set of these, which work extremely well as general-purpose handhelds (much better range than our IC-Q7s, and only cost $20 a pair after rebate). We'd like to use the T7400s for bike- to-bike communications on motorcycle trips. Our plan is to mount small speakers inside the helmets, and a microphone element in the lower face guard, to reduce wind noise. There would be a PTT switch, most likely mounted near one of the handgrips. What we can't seem to find are the required tech specs on the speaker and microphone elements, or a wiring diagram for the single plug that connects everything to the radio. I'm aware that some radios short the mic element with a resistor to actuate PTT, but need a lot more specifics for this model. thanks and regards, Martin |
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