For about a year I have been using my K2 in digital modes. For about the first six months I used JT65 and then switched to JT9. For North America I usually use 10 watts and for the rest of the world I use 20 watts. In both modes the transmitter is on continuously for one minute followed by a minute off then another minute on, etc.
This has worked well for me especially considering that I have a low 88-ft dipole fed with ladder line, usually described as a "cloud-warmer." Using JT65 I accomplished WAS and eWAS as well as 50 countries and 6 continents confirmed. (Being near the peak of the solar cycle probably helped.)
My problem is that if I am running 10 watts and hear a United Arab Emirates station calling CQ (as I did this afternoon) and I crank the power up to 20 watts the K2 locks up. And no, this isn't done while transmitting. By locks up I mean that the only button-press that works is power-off. When I power on everything is back to normal.
The K2 is number 2268 and I believe that all updates have been applied. The 100 watt amplifier was added later in the top of the K2. I am using a KAT100 in its own case just below the K2.
Any suggestions will be much appreciated. 73, Jim - W4BQP Licensed in 1953 ______________________________________________________________ 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