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1Hz click external noise?
Lumpy wrote: Jeff wrote: 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. Jeff: Do you live on the country side? Could it be a farmer's electric fence? If not that how about the ignition system on a gas central heating system We live on a small suburban ranch. We have elec fences as do some neighbors. Ours is off for testing. I'm not sure what a furnace is. It's 100 degrees this week (unseasonably low) in Phoenix..;-) After sniffing around with the MFJ, and finding my rain gutters seem to be resonating at about 30Mhz I moved my dipole a bit so that the coax doesn't cross the gutters. Now the coax goes from top of mast to ground, and gets buried under about an inch of sand on our beach. Previously all of the coax was suspended above physical ground. The click seems to be gone. Perhaps the gutters were receiving neighborhood clicks and rebroadcasting them into my coax. Hmmm...30 MHz gutters...Maybe I'll work some 10 meters. Craig 'Lumpy' Lemke www.n0eq.com Sometimes two pieces of metal tapping together in the wind can cause it. I had put up a slopper for 20 meter coming of the top of my 50ft tower. When I put up the antenna I used a short piece of wire from the top of the tower to an insulator then connected the end of the antenna to the insulator leaving about a foot or so of the antenna sticking out of the insulator for prunning. Well, thats as far as I ever got with the sloper, as a matter of fact I put ham radio aside for quiet a while but I still enjoyed listening for BCB dx once in a while. I begin to notice that sometimes I would start hearing clicks while listening to AM and it turned out the noise was caused by the tail I left on the 20M antenna that was hitting the tower. Jimmie |
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