Thank everyone for you suggestions. Here is what I found and did to fix it. I disassembled my station and then started connecting one thing at a time until I found the problem. It turned out that my Signalink USB sound card was what was picking up the feed back and introducing it back into the K3. I put ferrite beads on everything and also did the aluminum tape mod on the signalink. All is well now. I can run full power with no problems. Thanks again Gerald
On Sat, Nov 2, 2013 at 9:00 AM, Martin Ewing <a...@ewing.homedns.org> wrote: > If the problem came on suddenly, that suggests a connector or wiring > problem. Check to be sure everything is tight and there are no breaks in > the shield, etc. > > 73 de AA6E > > > On 11/02/2013 12:47 AM, KC6CNN wrote: > >> The two antennas are a zs6bkw and a OCF dipole. Both are up about 32 feet >> and >> the ends are 12 foot off the ground. The coax is LMR400 and is new. The >> antennas are located on the opposite side of the house from the shack. The >> amp is powered by a 240 volt plug and the power supply is 110 volt. >> This happens in all modes, CW, Voice, Psk31. It happens on all bands. It >> only happens when the power is increased to 300 watts or higher. >> My station ran great for several months 6 to 12 months. Then all of a >> sudden >> this problem showed up. >> >> I will start filtering everything tomorrow to see if that helps. >> Thanks for the replies I will try your suggestions >> >> Gerald >> >> >> >> >> ----- >> KC6CNN - Gerald >> K2 # 5486 >> K3 # 6254 >> KX3 # 757 >> -- >> View this message in context: http://elecraft.365791.n2. >> nabble.com/kinda-like-other-post-K3-turns-off-tp7580359p7580362.html >> Sent from the Elecraft mailing list archive at Nabble.com. >> ______________________________________________________________ >> 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 > ______________________________________________________________ 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