UHF-TV Taboos: The FCC Electromagnetic Compatibility Plan for UHF Television

The constraints of assignment of channels to UHF TV stations are discussed, taking into account the radiated signal characteristics, the various undesired responses of receivers to signals on other than the channel to which they are tuned and effects of receiver local oscillator radiation. These "taboos" affect the assignment of many other channels for each assigned channel, due to the geographical separation requirements associated with the respective taboos. The basis for each taboo, the mileage separation required and the effects on assignment planning are discussed.