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Power line noise tracked down on Jan 1, 2013 to Duke Energy (previously Cinergy) pole number 189 718.

Direction finding video url : http://www.youtube.com/watch?v=ZrXQXkl3Zos

Broadband recording video url : http://www.youtube.com/watch?v=P629tc4BSVU

Power line noise using car AM radio recording video url : http://youtu.be/SEfaecsGVxk

Oscilloscope screen captures of received audio using various receivers at various locations on Jan 3, 2013 (note main spikes at 120 hertz).

DX-440 audio recording using audio jack output direct to oscilloscope (frequency 1880 khz AM) 0.66 miles from suspect pole using pennant RX antenna.

Car radio audio recording using Iphone (frequency 1710 khz AM) 75 feet from suspect pole.

VHF radio audio recording using Iphone (frequency 136 MHZ AM) 75 feet from suspect pole

DX-440 audio recording using Iphone (frequency 1880 khz AM) 0.66 miles from suspect pole using pennant RX antenna.

Direction finding equipment : 136 MHZ AM receiver, Cushcraft 4 element beam (tuned for 136 MHZ using alligator clips to extend elements), and 20 dB attenuator.