Hi Elecrafters I have recently bought a second-hand K2 with the KSB2 SSB module, the KPA100 100 watt amplifier & the KAT100-1 antenna tuner. Everything appears fine running either QRP or 90+ watts on all bands except 80 metres. I am using an off centre fed dipole (133') and the KAT100-1 antenna tuner to match.
Running in excess of 10 watts or so on 80 metres however when I switch the microphone, the tuning apparently shifts to another frequency on the band. The shift may be a few Hz or even a few 100Hz. The receiver is then on that new frequency. Reducing power back to a QRP level, the transmitter & receiver behave normally. I guess there's something wrong with the 80 metre sections of the KPA100 and/or the KAT100-1. Any clues of what I should check please? 73 Ray, G3XLG ______________________________________________________________ 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
