Another good source of in-home switching hash is the ubiquitous external
low-voltage halogen lamp power supply. In my experience, some of them are
completely quiet, some of them are anything but. If you have one of the
latter, though, you probably already know that. :-)
Bill / W5WVO
[EMAIL PROTECTED] wrote:
The best way I have used to test the effectiveness of noise blanker is
try to use the radio in a house with a common incandescent lamp dimmer
nearby the antenna connection. Use a wire antenna placed near the
lamp or wiring of the dimmer circuit if necessary to increase the
coupled noise.
The power line frequency zero crossing pulse width modulator (severe
contant buzzing sound) of the lamp dimmer noise will be almost
completely supressed if the noise blanker circuit is working properly
GL 73,
Bob Johansen WB2SRF
K2 S/N 5622
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