Hello Paul I took the pre-wired cable that came with my PTC-IIex and terminated the cable in a plastic project box, I connected all 4 of the braid of the screened leads to/from the K3 to the braid of the cable to the SCS modem. The white wire (pin 2 of the DIN plug) on the cable from the modem also connects to the braid at that common point.
You might at some stage consider making a switch box to avoid needing to keep swapping those audio plugs when using sound card modes, a cheap 4 pole 3 way rotary switch works well, just needs a few sockets on the rear panel of a small box and you're in business. It saves wear and tear on the rear sockets of the K3. 73 Dave, G4AON K3/100, SCS PTC-IIex --------------------------------- >I am making up a cable set to connect a Pactor modem to the K3 and wish to >avoid ground loops. The connections to the radio are: ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

