Re: KAT100 Power Calibration Problem

Posted by JeremyJones on Feb 28, 2014; 9:19pm
URL: http://elecraft.85.s1.nabble.com/KAT100-Power-Calibration-Problem-tp7584832p7584864.html

I was only able to get U5 pin3 down to 0.03VDC during the SWR Bridge Null test.  Is that low enough?  The manual says 0 volts or close to it.

Jeremy
VA3ZTF

Don Wilhelm-4 wrote

Jeremy,

You did not mention it, so I have to ask - when connected as you
describe, did you first obtain a good null at U5 pin 3 (by adjusting
C31)?  That is a necessary first step.  If you did not get a voltage
measurement in the single digit millivolt range (less than 10
millivolts), then 'all bets are off' and you need to first resolve that
problem.