On Thu, 24 Sep 2009 06:46:05 -0700 (PDT), Julian, G4ILO wrote: >Some have found that it is important to have continuity through the >cable shielding from the K2 right through to the computer.
Yes, and also to use twisted pairs for each signaling circuit between computer and radio. See http://audiosystemsgroup.com/RFI-Ham.pdf and http://audiosystemsgroup.com/HamInterfacing.pdf for descriptions of a serial cable that fixes problems like this. My initial experiments on this were the result of serious RFI issues with the K2 serial cable in close proximity to a long wire TX antenna that I used on 80M and 160M. Another point. Cable shielding IS a good thing, but using twisted pairs and terminating them to the chassis at each end, NOT to the circuit board, is the most important thing. 73, Jim Brown K9YC ______________________________________________________________ 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
