I have an older K3 that has been upgraded to a K3S with the output power modification for the P3. All this works, but I find that when I turn on the radio and then transmit on 20 m, the first TX is always about 1/2 power compared to the second and all future TX episodes. This only seems to happen when I turn on the radio and it is "cold" meaning at room temperature. I only have numbers for 20m, but when I did the first TX today, the output was just under 40 W PEP with the power set at 50W. The second TX (about 2 min later) the output power was 78 W PEP and this persisted for all TX for the next hour. Nothing was changed in the radio between the first and second TX episodes.
I do not remember ever seeing this behavior with the original boards, but it appears as though something is "warming up" before it will transmit at full power. Does anyone have any insight as to what might be happening and whether this is something I need to address or just live with? Thanks and 73, -Corky, AF4PM ______________________________________________________________ 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
