On 3/23/2011 9:39 PM, David Pratt wrote: > That being so, Alan, is there any value in supplying screened cable for > the power lead rather than the twin 'bell wire' used at present?
Not if it is common mode current, coupled from signal common onto the V- wire. Go to my website and study the material on "The Pin One Problem." While it is written about audio interconnects, it applies directly here to the V- lead. http://audiosystemsgroup.com/publish.htm Shielding only matters with respect to DIFFERENTIAL circuit (that is, RFI between V+ and V-). 73, Jim 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
