Have a issue getting PTT to work on the second Node The recieve works fine but can not key the second Radio The configuration is Two Nodes on one box using two usb FOB And the Parallel Port for COS and PTT. I have Radio 1 using Pin 3 PTT , Pin 10 COS Radio 2 Pin 2 PTT and Pin 11 COS The first Radio works fine Recieve and Transmite The second radio recieves ok but no PTT and ideas Randy