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1Hz click external noise?
Lumpy wrote: Any guesses as to the origin of the mystery noise bugging me this morning would be apprec. I'm hearing an S9 "click" at just about once per second, everywhere on 20meters where there's not a powerful station's signal. It clicks for maybe 3-5 seconds then stops for a few seconds. Not always symmetrical (3 sec noise ~ 10 sec no noise). Click sounds like what I'd imagine a charging and regularly discharging capacitor might do. Freq independant, it's everywhere on the 20m phone segment. S9+ stations seem to override the click. S7 stations don't override, the click comes right through and clobbers reception. Station is "backyard remote", battery powered, asymmetrical wire dipole. I found some recordings of electric blanket noise via k0bg's site. It sounds very much like those recordings. Both of the elec blankets in my home are off and unplugged. Neighbor elec blankets? They would be probably 100' away from the closest point to my antenna. Noise just started this morning. No new elec or mechanical devices running at my home. Turned off the A/C, fans, elec fence, light dimmers, pool filter etc. Three computers run inside the house, as they have for years. Anyone have a guess at this 1 Hz click noise? TIA - Craig 'Lumpy' Lemke www.n0eq.com Hi Lumpy, I had something very similar a couple of years ago. Noise was burst about a second apart but continuous unlike yours. I went throufg everything in the house that could cause it. This went on for a couple of months until I was riding down a road about a mile from the house and heard it on my cars AM radio. It was coming from the ranch I was riding by. I am pretty sure it was from an electric fence charger. About the time I figured out what was causing the interference they moved the horses to another pasture an turned off the fence. I shouldnt have any more problems, the farm was sold and they are buiilding houses there. Jimmie |
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