Just a thought, why isn't the schematic available on the Elecraft site. What is the deal with worldwidedx? Regards, Mike VP8NO On 16/10/2011 10:51, ke9uw wrote: > Go here for a schematic... > > http://www.worldwidedx.com/amplifiers/96435-elecraft-kpa500-high-frequency-amplifier-manual-schematics.html > > Chuck, KE9UW