Re: K2 signal tracing question

Posted by Paul Fletcher on Nov 05, 2009; 12:44pm
URL: http://elecraft.85.s1.nabble.com/K2-signal-tracing-question-tp3948589p3951879.html

David Woolley (E.L) wrote

Where are you getting the specification from?  The K2 doesn't operate
the IF amplifier at the Vcc value given in its data sheet and the AGC
operation scales with supply voltage.

Look at the signal tracing section of the manual. U2 is the AGC amplifier and that runs of the 8V supply. At AGC saturation the AGC amplifier should drive the AGC voltage to over 6 volts (can't remember exact value). I couldn't get anywhere near this but it seems my generator is not man enough to drive the AGC into saturation anyway as per Don's comments earlier.

Regards,
Paul M1PAF