On 12/18/2020 8:44 AM, N4ZR wrote: > What am I missing? There are two tutorial applications notes on my website about this. k9yc.com/RFI-Ham.pdf explains how the basic physics applies. Use the chokes described in this one on the wiring attached to the victim equipment. http://k9yc.com/KillingReceiveNoise.pdf 73, Jim K9YC