I have used cat1000 and app_rpt with PP interface. It's all basically the same. Using the remote base interface, Invert the logic COS -PTT PTT - COS 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. ...mike/kb8jnm

HI All,

Anyone out there has done an interface between the cat 200b controller and DMK URI.

Thanks

Wayne

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