I just completed the upgrade of a very early KPA100 to Rev. A-2, Nov 13, 2006, including the Res kit and improved shield. The upgraded amplifier acts as expected, but seems to have a wide range of total system current draws depending on band. Following the upgrade manual, I did NOT re-tune the amp.
The following measurements are with a well-regulated 13.6 V supply, the KPA-100 set to 100W, and are the total currents in Amps for the K2 (well-loaded), KAT100, and modified KPA-100. 1.825 16.5A 3.525 12.8 7.025 15.1 10.125 18.0 14.025 16.8 18.100 13.5 21.025 15.4 24.900 19.0 28.025 14.7 The SWRs are at or below 1.3. A pre-upgrade reading at UNKNOWN frequency was 14 A. Is this a normal range of current draw or is there something I should check? Thanks, Chris Kimball NQ8Z (xWB4WZR) -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA100-upgrade-Current-draw-diffrences-with-frequency-tp7372188p7372188.html Sent from the Elecraft mailing list archive at 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
