A better description (which I've used in the manual at the suggestion of the design engineers) is that the KPA500 is solid state "FIXED TUNE" - which is true of most, if not all, Ham amplifiers on the market.
That means that it works at peak efficiency at some point in each band and the efficiency starts to drop off above and below that frequency. It'll do full power output across the whole range of any Amateur band, of course, but the current demanded will rise somewhat at the limits, even feeding a 50 ohm resistive load. Ron AC7AC -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of FredJensen Sent: Wednesday, February 16, 2011 4:57 PM To: Elecraft Reflector Subject: Re: [Elecraft] 120V vs 240V On 2/17/2011 12:45 AM, Lew Phelps K6LMP wrote: Stupid question: I was under the impression that the KPA500 was solid state, no-tune. A couple of references on this long "Voltage Thread" have caused me to wonder. Fact would be welcome. 73, Fred K6DGW Auburn CA ______________________________________________________________ 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
