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On Mar 8, 1:52 am, wrote:
Hi. I know nothing about amateur radio nor electronics so I'm here looking for an answer to a question which bothers me. There are a number of places near where I live that, if you drive by them with the AM radio in the car on, there's an extreme amount of noise. It usually last while driving parallel to overhead wires (not high power lines, must the ones on poles), then goes away. It's always the same places and doesn't come or go. I'm guessing bad shielding of the wires. My concern is, if it does this to the radio, is it harmful to people who are near it? Thanks. First, the levels of emissions are probably about a million times lower than the standards for human exposure to electromagnetic fields, so there are no safety concerns. See http://www.arrl.org/rfsafety for more information on the subject in general. The problem is generally caused by defective hardware on the poles, from loose hardware to defective insulators (actually pretty rare.) The subject is covered in detail at http://www.arrl.org/tis/info/rfi-elec.html, especially relating to Amateur Radio. 73, Ed Hare, W1RFI ARRL Lab |
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