[Elecraft] [K2] KAT2 Question

[Brian Handy]

Hey all,

I've been working on the KAT2 module for my K2.  Mostly making progress but stumped in the bridge null adjustment.

I was having problems with C55, and getting silly readings on U4 Pin1, so after staring at my board for a while, I went to the web for a while and read about other folks' problems and figured out I had wired J7 backwards on the control board.  I fixed that, which brings us to my problem...

I set ATU CALn in the menu, exit, hit 'TUNE' like I did before, and instead of getting the mV reading like I was before, I just get a power reading - e.g. "P 4.5".  I can't seem to get back to what I was looking at before.

I went back and checked the other tests again ... I have everything in ATU mode in the menu, I can make the relays go clicky-click when I run through that set of options in the ATU menu, but I can't get this null mode to work.  I was able to get it to work when I had the RF cable J7 wired up wrong.

Ideas?

Thanks,

Brian Handy
AE7JW