[Elecraft] KAT2 problem: bridge null adjustment

[Stephan Walder, HB9DDO - K2]

Hello K2-owners

I'm on the way to assemble/install the KAT2 option. Everything looks good
including the preliminary tests. When I came to the point where I'm supposed
to adjust C55 for the bridge null I ran into problems. Even with power
reduced to the minimum at 0.1W I get a high current warning when I tune. I
checked several times to make sure that the dummy-load/rf-power-meter is
conncted to the right Ant jack (1) and the correct antenna is selected. My
K2 reacts as if there were no antenna at all. I even checked the cable
between TX and dummy-load, went back totest without KAT2 to make sure
there's no problem there.

According to the troubleshooting section I checked on T1, even re-soldered
it to make sure there's no problem there...

Fellow hams, I'm stuck ! Any help/idea/suggestion is welcome. Anybody seen
this or a similar behaviour before ?

vy 73, Stephan, HB9DDO, K2 S/N 3128

P.S. I finished the basic K2 last week, made the first QSO on 20, 30 and 40,
repaired my G5RV last saturday and enjoyed some nice QSO's on 40m. Beeing
too lazy to tune my G5RV with an old manual tuner for every band-change I
decided the KAT2 would be the next option to deal with.