On Sun, Oct 23, 2011 at 9:10 AM, Don Wilhelm <[email protected]> wrote:
> ...One way to establish that low impedance point for RF in a 2nd floor > environment with 1/4 wave wires for all bands that you intend to > operate, and it may be the only practical way if you cannot keep common > mode RF off your antenna feedlines... > > =============== This is spot on. If you can get a good counterpoise scheme worked out, there's no need to move the shack downstairs. Your symptoms indicate that the trouble is stemming from common mode currents on the outside of your coax. Once these are cured, there may be no need to hang ferrites on the connecting wires in the shack. It sounds as if you're on the right track, but you can do more to choke off the common mode currents and divert them so they won't travel on the coax. 73, Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 ______________________________________________________________ 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
