Re. the various sources of RFI:
http://www.tvtechnology.com/conferen...visited/183659
Re. the various sources of RFI, FCC proposed solution (transmitter power level increases by 8 to 12 dB over the VHF spectrum {CH-13 through CH-2}) and the ongoing political pressure to take more spectrum from OTA TV:
http://www.tvnewscheck.com/article/4...-high-priority