[Elecraft] another K2 building question

[Daniel Kreithen]

Hi - 

I've reached the point in the K2 build just before the RF board assembly, part II, and am performing the recommended tests.  Everything checks out fine except for one thing:  I can't set the AGC threshold to the recommended 3.80 volts.  Adjusting the potentiometer R1 on the control board makes the voltage at pin 5 of U2 top out at 3.64 volts.  Is this a problem (I imagine it is!).  Where do I start looking for an issue?  Thanks,

Dan Kreithen
AE3E
dkreithen at hotmail.com


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