This is normal from theory. Input power increase as I*U. Output power increases as I*I*R. So at half input power one quarter output power. At 1/4 input power 1/16 output power.
Two ways around, none implemented in KPA1500. Change transformer windings like in KX3, which is harder to do at high power. Lower the voltage as in Expert amps. In old times, my 20A power supply to a 100W rig broke. I only had 5 A supply. Was good for 5W. But after adjusting with tuner for a max power, the output was 25 W. The tuner acted like a transformer. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
