[Elecraft] KAT 500 Loses Match

[Paul Ecker]

I am experiencing a new problem for me, with my KAT 500. So far I've
noticed this issue on 30M. I am using a dipole cut only for 30M with an SWR
of 1.2 to 1.3 max SWR across the band. I “trained the tuner” at 20khz
segments on 30M.

Setup is K4D, KAT 500 & KPA 500. Win 10 pc.

Running CW, I can start transmitting and all is fine- my LP100A is showing
1.2 SWR and am getting max power out of the radio. Then all of sudden the
SWR jumps to >9.0. The KAT starts chattering and finds a new match. But if
I start transmitting again – pwr out is only about 10 W at that new match,
and eventually the tuner becomes untuned again. Sometimes, it will then
hold the tune but still only getting abt 9-10w power out. The issue occurs
with KPA500 both on and off.

Does this sound like a KAT 500 problem or maybe an RFI problem.


73 Paul

w2eck