Tnx Phil. Note that using the lengths do not improve the performance, only the impedance excursions involved and they can be handled by a wide range tuner quite nicely.
That said, some tuners show excessive losses at extreme impedances even though they may show a 1:1 SWR on the coax link to the rig. I use a homebrew fully-balanced link-coupled tuner with my doublets that I have considerable confidence in having low losses across its range and the ability to match everything from a fraction of an ohm to many thousands of ohms. Using many "commercial" tuners I'd be much more concerned. The ARRL Handbooks have a table showing the combinations of wire length and feeder length that produce the least extreme feed point impedances as well. Ron AC7AC -----Original Message----- I was asked why 90 feet of 300 ohm ladder line by the group. Ron of DX Engineering responds below. Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com ______________________________________________________________ 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
