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How to make GM360 to TX link radio?
Posted: Mon Jul 25, 2005 6:39 am
by asdfg
I want to use some Motorola GM360 UHF, as a link, so I want to make external PTT trought accessory connector (20 pins) and input TX audio trought (via) same connector. For external PTT it is clearingly to me that pins can be program (voice PTT), but I don't know which pin to use to input TX audio?
Posted: Sun Jul 31, 2005 12:55 pm
by Paul
If I recall well, mic audio in is pin #1. Usualy ext. ptt is pin #3, gnd is #7.
Take care with the pin numbering. Pin #1 is SECOND in the row...
Hi Paul!
Posted: Sun Jul 31, 2005 11:17 pm
by asdfg
Pin#1 is audio output from GM300, together with pin#16,
Pin#3 is voice PTT
Pin#5 is audio input (TX audio taht I need)
Pin#8 is PL/DPL detect.
Everithing is working but audio input not, that does not produce FM deviation when GM3600 go on transmmiting. WHY IS THAT?
Hi!
Posted: Mon Aug 01, 2005 12:48 am
by asdfg
Now I understand. Pin#2 is MIC input, but should be enable by software.