[EMAIL PROTECTED] wrote:
If your shack is very near your antenna you may have more
problems. My antennas are high (around 60') and my radios are in the
basement, so there is good isolation between the power supply and the
antennas.
This is the key point! Your antennas are probably fed with coax with
baluns if needed, or properly installed balanced line. In my opinion,
most problems with switcher noise are caused by the noise energy being
conducted to the 'ground' of the AC line, then flowing along the
feedline in common mode, and then getting picked up by the antenna.
Noise energy can also be radiated by house wiring, etc. Things like
verticals near the house, random wires, etc. are problematic for use
with switchers (or around computers, etc.).
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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