Last weekend I used my K2 in combination with my own designed/build 44 Mc transvertor for meteor-scatter QSO's. Last week I finished my "audio interface / sequencer" to give me "isolation between PC and K2 / save my preamp when running a high power amplifier" respectively. The K2 has the K60XV option installed to give me a separate RX input and a low power IF drive (controllable by the front knob) on 28 Mc.
The system worked well except one detail. The drive power was very unstable which causes the output to change between 250 - 1250 W (even walking around in the shack gave me these power changes). When TX-ing I had to adjust the power knob each period (30 sec). It happened many times that I increased the control knob but power goes went or vise-versa and jumped back again. I used RF-clamps to see if I could find a "hot spot" but it all looks like direct pick-up from the K2. It seems that the power control circuitry is rather HF sensitive (for 144 Mc). The power LED-bar of the K2 (S-meter) showed the change in power accordingly. Anybody else with this experience? And a remedy may be (to prevent re-inventing the wheel)? 73's, Evert PA2KW _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
