[Elecraft] Setting the AGC Threshold on K2

jrb jrbee at best.com
Sun Dec 18 18:28:53 EST 2005


Hello All-
	
Once again I'd like to tap this deep font of knowledge.

I've just completed the first alignment and test and everything  
checks out except setting the AGC threshold.

When I put the probe of my DMM on pin 5 of U2 (a hellish place to get  
consistent readings) and adjust R1
I get only .002 DC volts.

I've resoldered the pins on both U2 and R1. I've looked through  
Troubleshooting and the Reflector and
haven't  found anything relevant.

By the way I had no trouble with the S-Meter alignment which is  
dependent on the AGC threshold.

Is there any place else I should look  on the control board for a  
possible source of trouble, or could U2 or
R1 be defective? (I know components are rarely defective).

TIA,

Jeff

KG6ZVT


More information about the Elecraft mailing list