Re: K2 BFO Drift / Filter Alignment

Posted by K1FFX on Jan 11, 2011; 2:25am
URL: http://elecraft.85.s1.nabble.com/K2-BFO-Drift-Filter-Alignment-tp4236424p5909401.html

I thought I would post what I think (hope!) is my resolution for this.

I wrote to Elecraft's support line.  Gary responded promptly (as always), suggesting essentially that I remove L33 and the rubber bumper and do a better cleaning job beneath the bumper, thereby moving L33 further away from the bottom cover.

I looked it over and concluded that was a task I didn't want to do.  So, I went the other way.  I put 3 leftover washers from the K2 kit on top of the two front 2-D fasteners and the middle standoff (near L33), and then replaced the bottom cover.  This moved the bottom cover further away from L33.  As far as I can tell, this has solved the problem.  Pressing on the top right of the case has no effect and pressing on the bottom of the case, short of really bearing down on it, also has no effect.  Now just to keep an ear on BFO drift now that the drift-when-pressed problem is apparently fixed; I'm hoping there will be no further drift.

Thanks to all for your help.

- Bruce