[RFI] ARRL to FCC...
Pete Smith N4ZR
n4zr at contesting.com
Fri Aug 1 06:40:01 EDT 2014
Jim, for whatever it may be worth, we have 8 2-bulb Kichler Xenon under
cabinet fixtures in our kitchen, which is directly below my shack. I
have never noticed any noise from these on HF. We did have them all
fail, one after another, over a period of years, apparently because the
switching power supplies went south, but Kichler replaced them without a
flicker, so they must have known there was a design issue.
Looking at Kichler's current offerings, they seem to offer both units
with built-in switching supplies and units designed to be powered from a
central 12V supply. Wouldn't it be feasible to stash one large 12V
filament transformer in the back of a cabinet and wire the lights from it?
73, Pete N4ZR
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On 7/28/2014 11:43 AM, Jim Brown wrote:
> On 7/28/2014 7:30 AM, Hare, Ed W1RFI wrote:
>> But lighting controllers operating 58 dB over the FCC limits ARE a
>> major threat, and we are getting new reports every week.
> I strongly agree, Ed. I first encountered this in the home that we
> bought in California in 2006. It has several low voltage lighting
> fixtures, all run with what the electrical supply houses call
> "electronic transformers." They are unbranded and unlabeled, and they
> are noisy switching power supplies.
> These little boxes are, for all practical purposes, the only way to
> power these devices because a real transformer is four times the size
> of the electrical back box into which it must fit. If any clean
> supplies exist, I sure would like to know about them.
> 73, Jim K9YC
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