I doubt a line cord torrid will do anything. At 2 meters, a quarter wavelength is 19 inches and so even if the torroid was 100% effective at suppressing all energy, if it is more than a few inches from the internal circuit board that is generating the RFI, then it will accomplish almost nothing. IE, if it is 19" away from the board, then the 19" leading up to it is a perfect 1/4 wave antenna for the RFI.
The RFI needs to be suppressed at its souice, on the board. And good luck with that!
Bob, WB4APR
On Sat, May 22, 2021 at 3:25 PM John Geiger af5cc2@gmail.com wrote:
I have been having some noise on 2 meters, making it harder to hear the satellites in certain directions, and I have finally traced it down to the new dishwasher we bought a few months ago. It is a Frigidaire Galley Model number FGID2468UF1A (in case you want to avoid this model).
I tried wrapping the power cord, which is a flat, about an inch wide 3 pronged AC cord through a rectangle torrid I have on hand that would split in half for easier access. I could fit 2 turns of the cord through it. That didn't make a difference. I have a larger ring torrid but the plug on the cord is a little too large to fit through it. I am sure I could get a larger diameter torrid if I thought it would work.
So, what is the best plan of attack on the RFI-other than just unplugging the dishwasher when I am not using it. I can probably only get 2 or 3 turns max through a ring torrid due to the length of the cord. Is this the best solution for RFI, or what other methods can I try?
73 John AF5CC
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