Carl, Does this also happen when directly connected to a dummy load? If not then maybe you have an RFI problem. Check all antenna connections and jumpers.
GL! Ken WA2LBI On Sun, Apr 5, 2020 at 4:51 PM Carl Yaffey <cyaf...@columbus.rr.com> wrote: > I have developed a loud hum with the KPA1500 on 17m and 15m. A slight hum > on 20m. All other bands, no hum. > It’s power dependent. Loud at full power, hum reduces as power is lowered. > Not too bad at 500w. > Suggestions? > 73. > > Carl, K8NU. > > ______________________________________________________________ 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
