When we completely rewired our home last year, state code required
that we use "energy saving" lights and dimmers. Our hall
dimmer/light combination gave off horrible RFI. After the
final inspection, the dimmer was replaced with a regular on/off
switch and the RFI vanished. No problem with the LED lights that
stayed. But, our government (state, federal, local) knows what is
best for us, here in the Land of the Free.
At 10:48 AM 2/10/2014, David C. Hallam wrote:
I may have made an unwarranted conclusion, but I assumed the LED
were substituted for halogen without any other changes. I will see
if I can get a clarification on that point. Would a change in bulb
types make any difference in the RFI being generated?
David
KW4DH
On 2/10/2014 1:14 PM, Jim Brown wrote:
On 2/10/2014 11:07 AM, Dave Cole wrote:
Who would have thought the LED's could radiate so far?
It's not the LEDs, it's the wires (antennas) connected to the
switching power supply for the LEDs. This should come as no
surprise to any ham -- switching power supplies are generators of
RF trash, that puts RF current on those wires, and like any other
antenna, those wires radiate the trash.
Thank you VERY much for posting details of part numbers and vendors
for the bad products.
73, Jim K9YC
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