It gets tricky when the antenna feed point impedance is several thousand ohms such as I see with my 130 foot inverted L on 80 meters or with the common open wire fed multiband doublets.
In those cases it's common to use a resistance of 100K or more to avoid excessive losses in the resistors. But, such large resistances require more time to bleed off the accumulated voltage. At some point they can no longer drain the charge as fast as it accumulates and become ineffective. My favorite "tuner" for such antennas has always been a link-coupled tuner. No direct-current connection between the antenna and the rig and a d-c path to ground for the antenna at all times. But such tuners are not conducive to fast, automatic operation. 73, Ron AC7AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
