John, I purchased KPA500 serial #1523 in February 2014. It was one of the amps that went on the T33A dxpedition in November 2013. Of the five amps on that dxpedition 4 were in the low 1500s and one was in the low 1200s. I don't know why they had one that had a much lower serial number than the others. The dxpedition coordinator did tell me they got the amps about a year before the dxpedition. So that puts my serial number in late 2012 or early 2013. Elecraft provided the K3s and KPA500s on the dxpedition. There should be no worry about the serial number or age of a KPA500. Unlike the K3 that had many mods over its productive life, I can only think of one mod on the KPA500 and that was to the 12 meter bandpass filter. There were issues with some KPA500s on 12 and the upgrade fixed that. My KPA500 did not experience the problem, but I had it upgraded in July 2014 just to be safe. Other than that one upgrade, and you might ask if he has had it done, a low serial number 1300 should be as good as one off the line today. If the amp has not had the upgrade you can get the parts from Elecraft and do it yourself or send the RF deck to Elecraft and they will do it for you. You do not have to send the complete amp with power supply back to California. All they need is the RF deck. This saves lots on shipping.
Mark Musick, WB9CIF -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of j...@kk9a.com Sent: Tuesday, July 5, 2016 7:12 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA500 age I hate to bother Elecraft with this question, I am hoping someone here can give me an age estimate of a KPA500 with a serial number in the low 1300s. The seller claims that it is a year old and I suspect that it is much older. John KK9A ______________________________________________________________ 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 markmus...@sbcglobal.net ______________________________________________________________ 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
