[Elecraft] K2 AGC problem

[Mike Stricker]

Hi,

My K2 has been working well and I recently noticed that the AGC fast/slow has little or no effect.  I suspect it's been this way for quite some time.  I made some measurements and when performing the AGC tests on U2 (LM833), I get very close to the expected values for the specified conditions.

My next step was to look at the /SLOW AGC line and select fast or slow.  When I do this, I get either 4millivolts or 18 millivolts...not what I had expected.  I thought this signal was being driven by U6 so I would have expected either a logic 1 or 0.

Any comments will be appreciated.

Thanks in advance.

Mike, WA1SEO