This is an update for the group re. my KPA500.Several weeks ago I reported that all of a sudden my KPA500 dropped to 0 watts out when fed with my K3. SWR was 1:1. When the amp was placed in bypass my K3 showed normal output. When placed in operate SWR showed 99:1 and K3 dropped to 0 watts out.After speaking with tech support I obtained a RSA and sent in back for repair.Elecraft reported problems with the TR circuit and performed the following:Updated the TR circuit and rebiased PA module to 0.8 AThey replaced C9 for QSK upgrade in the I/O ModuleReplaced C20, R35 and R31 for QSK upgrade in the Front Panel ModuleReplaced Q5, D7, R3, R9, and R24 for transmit/receive MOD in the Low Pass Filter and replaced C43 and C44 in the 12 meter low pass filter.After 8 hours of burn in and thorough testing, Elecraft returned the KPA500 back to me and only charged for one hour of labor and return shipping. Wow!!!Am I a happy camper/customer... you bet. When Ten Tec disappeared for awhile I reluctantly switched to Elecraft, but have never looked back. What a wonderful company with outstanding customer support. I look forward to adding a K4 within the next year...Don, W4CBSSent from my Sprint Samsung Galaxy Note9. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net
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