Hi all, I'm seeing a rather strange phenomenon with the K3's transverter output this evening. I'm using it to drive an OZ2M 70MHz transverter.
If I set up the drive level for the desired 40W out (after the 70MHz PA), it needs about -12dB according to the K3. After a few minutes' of TX, the power out is substantially reduced - but here's the strange bit. If I now twiddle the power knob clockwise, the display still indicates -12dB, but the actual power out increases back to the original setting! Similarly if I go into the config menu, and change the transverter drive down to 0.04 and back to 0.05, full power is restored. This pattern continues - a gradual decline in TX power, restored by a quick twiddle of the TX power out to get it back up, then a gradual decline again. Any thoughts very much appreciated! (Unfortunately I don't have a mW-level power meter so I can't easily verify the IF power out, but the fact that twiddling a knob that doesn't have a displayed effect on the K3 makes me suspicious it's at the rig end...) 73, Rob, M0VFC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
