Correction:Link is on Application notes page. Application notes page in on Builder resources. Link is: http://www.elecraft.com/Apps/zerobeat.htm =20 Dan / WG4S / K2 #2456 <snip> Tom, N0SS, collected some good samples of what this sounds like. Look up = the Elecraft WEB site at www.elecraft.com , go to the Builder's Resources = and click on "Zero Beating a Signal on the K2 (or K1)"