[Elecraft] K3 going expeditionary

[Jim Brown]

On 8/24/2020 8:11 AM, Mike Short wrote:
> Twisting the wires doesn’t do anything.

Au contraire!  Twisting provides an excellent rejection of of crosstalk, 
including RFI. Have you not noticed that CAT5/6/7 cables are four 
tightly twisted pairs, each with a slightly different twist ratio, all 
very well engineered to minimize crosstalk between them?  Twisted pair 
has been widely used in pro audio for a century. Beginning with the 
earliest days of telephony, their cables were run on the same poles as 
AC, with a crossover every other pole to provide the twist (the only 
rejection needed was at 60 Hz, 50 Hz in EU).

Those who make and sell zip cord, glorified or otherwise, as speaker 
cable are ignorant of this. When I lived in Chicago, I solved a lot of 
RFI to home stereo systems by replacing such with twisted pair.

73, Jim K9YC