I unask the first question (how to raise K2 output power). But in self-defense, I knew that: PAs have better distortion properties with higher supply voltages 14->20W is about 1 dB but 10->20W is 3.01 dB (3 dB MATTERS!) operating above 10W on ssb with the K2 was not a good idea as designed and I would only do so in a true emergency the PA devices would need to be replaced the PA output network would need to be redesigned completely the driver stage would need to at least have a huskier device the existing K2 PA heatsink method may be marginal already I would be barraged by nay-sayers
but I did not know that the MCU was so tightly involved in power level control. Purchasing the new 100W amp from Elecraft wouldn't meet my needs for at least three reasons: for the same $$$ I could get a used Herc II !! fails the one box test would be much less efficient at 20W than a solution designed for 20W I am still looking for a known solution to the relatively low RX audio issue. While buying the K2 audio filter module would work, it is an expensive option. (Does anyone have a used KAF2 laying around?) Now as a well-known QRPer (KU7Y) often says "now back into my hole" -- 73 Allan K7GT ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html