Sounds to like your LDG Tuner can't match the load... 73, Tom Amateur Radio Operator N5GE
On Sun, 15 May 2011 11:00:57 -0400, Nels Anderson <n...@flightsim.com> wrote: >Been enjoying KPA500 #32 for a couple of days now. Haven't yet made a >lot of QSOs with it, but the extra power on RTTY and to bust a couple >SSB pile-ups has been welcome. > >However, the amp does not like my 40m setup. As soon as I transmit it >instantly goes into high reflected power fault and shuts down. My >antenna is a 120 foot center fed wire using 1 inch ladder line and an >LDG 1 kw auto tuner. SWR on 40m is under 2:1 and the K3 and other rigs >I've used it with have always been happy with the antenna arrangement. > >In experimenting I used the K3 tune function and reduced the power in >steps to see if I could reach a low enough power level that it would >operate, but even at 1 watt of drive the amp still instantly went into >fault. > >On 80m it did the same thing the first time I tried it, but then I >manually tweaked the antenna tuner, got a lower SWR reading and then the >amp worked. On the higher bands that I've tried there has been no problem. > >So, any idea what is causing this? > >73 Nels K1UR > >______________________________________________________________ >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 ______________________________________________________________ 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
