Earl W Cunningham wrote:
Worked Vic, K2VCO this morning on 40m CW. His K2/100 was absolutely
clean with no clicks and no noise on his CW sidebands while he was
running barefoot.
When he ran ran QRO to his Alpha 87A, There were still no clicks, however
there was noise on his sidebands extending out +/- about 1 kHz from
center frequency. I honestly expected it to be worse than that, but he
apparently also has the same problem with the magnetic field from the
magnetic field from the HV xfmr in his amp getting into his K2.
My K2 is about 4 feet from the Alpha 86 (not 87A unfortunately) and it's on the
side near the hypersil transformer. If this is indeed caused by the magnetic
field, I suspect that there is a particular component or components that are
affected, and perhaps it would be possible to shield them. I rarely run more
than 100 watts, but there are times that I would like to do so, so I'll be
looking for a solution.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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