[RFI] RFI at W9RE on 160 meters tracked down to transmission line 2.7 miles away

[K9MA]

On 2/9/2026 4:31 PM, Don Kirk wrote:
>   but a lot of times the 160 meter DFing headings did not
> converge upon each other and at times I felt like I was just pointing
> perpendicular to high voltage transmission lines versus right at the source
> regardless if using my portable flag or tuned loop
This issue can often be avoided by relaying the RFI heard on the station 
receiver, so you can hear it while you are tracking. There is almost 
always a pattern of fluctuations in the noise. When they match, you know 
you are hearing the correct source. This is the same principle as 
"signature analysis", but you don't need an extremely expensive piece of 
equipment, just a couple 2 meter radios. (Cell phone latency is too high.)

The station receiver should be in the AM mode, AGC off, and RF gain 
reduced to avoid overload, if necessary.

73,
Scott K9MA

-- 
Scott  K9MA

k9ma at sdellington.us