The maxtrac radios placed a DC voltage on the mic hi wire. If you do not see that voltage, the mic will not work.
Now there is a possibility that the maxtrac may switch that voltage on and off along with the PTT (TX on and off) but I don't recall that being the case when I had the maxtracs. So far as model numbers on the maxtrac DTMF mics, I do not know any of them; despite having had a few across the years. KC5DBH Matt ________________________________ From: w7nikw7nik <[email protected]> To: [email protected] Sent: Mon, December 7, 2009 12:18:29 AM Subject: [Repeater-Builder] MAxtrac Help please Has anyone rewired the pin out on a Motorola DTMF mic model hmn3013a to a maxtrac 300 . I do not see voltage out the mic jack , this might be a problem . Any help would be great I can get different dtmf mic , but i don't know what model to get . ------------------------------------ Yahoo! Groups Links
