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  1. I have been reading recently in TV Technology some articles or letters from people who are experiencing EMI interference from the new LED light bulbs that are starting to appear at Home Depot and other Hardware stores and lightning supply stores. These bulbs they tested emitted enough radiation out of the Bulb and associated wiring to knock ATSC channel 10 off the air in the vicinity of several hundred feet.. Frequencies in the 400 to 600 Mhz range were found to be emitted from the switching power supply contained in these bulbs. Has anyone noticed this interference reducing Wireless Mic sensitivity in production situations where we are seeing more and more LED fixtures showing up? Larry Fisher. Have you done any testing with spectrum analyzer to see if this will be an increasing problem in the future with more and more of these "dimmable" LED lamps being used in buildings or on sets? I just noticed all the streetlights in my neighborhood have been replaced with LED based lamps. Will this add to the noise floor of the VHF spectrum? Apparently Part 15 FCC approval is really not policed and is really granted without testing on the honor system.
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