[App_rpt-users] cat 200b controller

mike at midnighteng.com mike at midnighteng.com
Mon Mar 21 22:45:17 EDT 2016

I have used cat1000 and app_rpt with PP interface.
It's all basically the same.

Using the remote base interface,
Invert the logic
TXaudio - RXaudio
RXaudio - TXaudio

Inverting the logic on the cos/ptt may require a transistor to make a double
inversion. 2n2222 /3904/3906

I can't remember what I used. Just that one problem you will see is getting the
proper signal from lines that FLOAT when active or inactive. Hence the transistor.


> HI All,
> Anyone out there has done an interface between the cat 200b controller and
> Thanks
> Wayne
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