Maggie, K3XS wrote: "If I were having that problem, I'd be thinking about shielding the *source*...because it would likely affect other equipment in my shack." ========== Yes, indeed, the source is the HV xfmr in the amp. No other equipment in the shack is affected by it, including any other transmitter or transceiver I have used to drive this amp. I'm sure the same is true for the thousands of amateur amps in service throughout the world.
The PLL circuit in the K2 is sensitive to magnetic fields (this is no secret) and, rather than shielding the big amp, it makes more sense to shield the small K2 or its PLL components. It is felt that the inductor in the K2's PLL circuit is picking up the hum. Perhaps Wayne/Eric can try using a different inductor (wound differently, shielded, whatever) to cure the problem. 73, de Earl, K6SE _______________________________________________ Elecraft mailing list Post to: [email protected] 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
