I have a fairly early KAT500 tuner (#275). I am using it to tune several antennas. Recently it has stopped finding acceptable matches to a ladderline-fed 110 ft. dipole. This problem is only on 40-meters. The SWR anywhere in that band is around 8:1. The tuner works great on all other bands (well, not so much on 160, but that's the antenna's problem). I also have a 43-ft vertical and the tuner matches fine on that antenna. I replaced all intervening coax jumpers and even the 1:1 current balun at the transition of the ladderline to the coax in the shack. None of the above help.
Interestingly, when I bypass the KAT500 and enable the internal tuner in the K3, everything works fine, including matching 40-meters. I have also done a reset using the KAT500 utility program; still no help. Before, I tear into things or stop bothering the good people at Elecraft, I wonder if any in the group has any suggestions. 73 de K6SBA David in Santa Barbara, CA ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
