There was an article in QST (or was it CQ?) about building a ultrasonic
"downconverter" to listen for noise sources. Yup, sound.. *Many (most?)
Power pole RFI sources are mechanical in nature, and have an ultrasonic
component.

re the Power company. They might be more cooperative if they knew that
you could involve the F.C.C. Especially if you decided to "help" them by
finding many more sources of noise.

Yup. Current (July) issue of QST. A kit that looks very interesting.

Paul, KD7HB