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Within the last few months I noticed a raspy signal on 1.824 Mhz 24 hours a day, 7 days a week. My 3 pennant RX antennas indicated the noise was coming from a heading of approximately 135 degrees, and a large portable shielded loop placed in my yard indicated a signal heading of 124 degrees (reasonably close agreement).

I then set out on foot using a portable general coverage receiver and a shielded loop, and tracked the problem down to a neighbors plasma TV set that generated RFI regardless if it was on or off (signal first tracked down to the power companies feed on the side of the neighbors house). The RFI completely disappeared when the TV power cord was unplugged. Using Google Earth the neighbors house is located approximately 350 feet from my Pennants at a heading of 122 degrees (this house is not next door to my house, and it's actually located on an adjacent street to mine).

Yesterday (December 4, 2013) my first attempt at eliminating the RFI turned out to be very rewarding. I constructed a simple power cord RF choke for the TV using 14 turns of a power cord on a 2.4" OD Fair-Rite #31 mix toroid core (based on the K9YC hams guide to RFI document). The RFI at the neighbors house is considerably reduced using the choke on the TV power cord, and the RFI at my house appears nearly if not entirely gone. I documented the problem and cure in a video I've posted on youtube. If interested the youtube link is : http://www.youtube.com/watch?v=mhJYCxJtFv0&feature=youtu.be