Due to recent experience, I have to wonder about the KAT500???
Do you have a resonant antenna or a high power dummy load you can go to directly - removing the KAT500 from the antenna circuit? If it works without the tuner in line - then you have likely eliminated the KPA500 as the problem.
I did a similar test using a dummy load (Mil-Spec 2 kW) with the KAT500 in line and carried on a "QSO" while watching all the meters. After about 45 seconds the tuner went nuts and started a retune - with no change in frequency etc. having been made. I did this to eliminate any futher waste of time checking and repairing non-existent antenna problems.
For the naysayers: The dummy load does not heat up at that low power. Going directly to a dummy load eliminates everything in the antenna line(s). Bill W2BLC K-Line ______________________________________________________________ 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
