K2 signal tracing question

Posted by Paul Fletcher on Nov 04, 2009; 10:07pm
URL: http://elecraft.85.s1.nabble.com/K2-signal-tracing-question-tp3948589.html

I'm fault finding a K2 that is deaf and has low TX output and have a basic question regarding the sig gen I'm using. My generator will only produce 145mV pk to pk and I want to know if this should be enough to drive the AGC into saturation. I'm only measuring 4.9V on pin 1 of U2 which seems way low compared to the spec. Is this enough input as the spec is 145mV RMS from a RF probe (which I don't have - I'm using a scope). Initial checks haven't shown up anything significant but I will start from scratch again tomorrow as this week has been lost repairing my scope.

Serial no. is 2756 and it has the rev A boards BTW.

73 Paul M1PAF