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Amateur Radio Data Transmissions - For discussion of all modes used to send data such as APRS and packet.

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Old 02-12-2018, 10:47 PM
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Join Date: May 2011
Location: S.E. Oklahoma
Posts: 173
Default TT4 digi w/Maxtrac

Has anyone on the forums successfully built a digi using a Tiny Trak 4 and a Motorola Maxtrac?

I have everything ready to go, cable built using the 16 pin on the radio. The TT4 will TX fine, but I can not make it hear anything. The Maxtrac is configured properly, Pin 8 is set to carrier detect, output, debounce no, active low. The radio is passing RX audio as measured with an O scope.

The problem is on the TT4 side. It will not hear anything. I've tried changing the settings on the TT4 till I'm blue in the face.

Any help would be appreciated.
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