Topband: Subject: Topband Puzzle

Mon Dec 8 08:55:02 EST 2008

A long time ago I had the same problem with a modified SB-220 for 160. The problem was thermal drift of the fixed padding cap. across the plate tuning cap. I would only notice it in contests where I would get the amp heated up enough to cause the cap. to drift. 

Greg

---------------------------------------------------------
Greg Chartrand - W7MY 
Richland, WA.
DN-06IF

W7MY Home Page:
http://webpages.charter.net/w7my/