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[ACC] Re: Need help RC-96 GM-300 clayton_parrott Tue Mar 27 00:00:09 2012

Mike
Thank you for the links and the comments.
I will look and see if I can figure this out.
If not I may be giving you a shout again.

Thanks

--- In [EMAIL PROTECTED], Mike Morris <[EMAIL PROTECTED]> wrote:
>
> At 06:01 PM 03/25/12, you wrote:
> 
> >Can anyone assist me in the proper wiring for the RC-96 and a couple 
> >Motorola GM-300's.
> >
> >Thanks
> 
> Look here:
> <http://www.catauto.com/notes/note18.html>
> 
> You will have to adapt the drawing to use the RC-96 pinout but the
> connections are the same. The GM300 has +8 to+9v on the
> microphone audio line so have a DC blocking cap in series with
> the audio from the controller, + side towards the transmit radio.
> 
> And look here:
> <http://www.repeater-builder.com/maxtrac/maxtrac-option-plug.html>
> 
> You will need to make sure that the radios are programmed to
> have the correct signals on the correct pins.
> 
> Look here:
> <http://www.repeater-builder.com/maxtrac/gm300-info.html>
> 
> Put a fan on the transmitter heat sink, and watch the duty cycle,
> the GM300 is a 10% to 15% duty cycle radio.
> That means transmitting for no more than 10 to 15 seconds out of
> each 100 seconds. This is not to say that you can't transmit for three
> minutes, but the transmitter is going to get hot, and the longer it
> talks the hotter it gets. These radios were designed for a 10% to
> 15% transmit duty cycle, and the internal power control circuitry
> (and the fan you add) is the only thing preventing the radio from
> burning itself up.
> 
> Mike WA6ILQ
>