This does not mean that the FM station is operating improperly or that the station was established in the wrong place, but is rather a reflection of the capability of the TV receiver to ignore the unwanted signal. It must be emphasized that interference does not always occur to Channel 6 reception, even when the television receiver is located well within the predicted FM interfering contour. Some generalizations can be made, though. Interference is less likely to occur when the FM noncommercial educational station operates on a higher frequency. Rabbit-ears antennas can often be adjusted to improve television reception.
Tuned filters are often helpful in resolving any interference.
TV receiving installations which use signal booster amplifiers are not protected from interference caused by other sources, including noncommercial educational FM stations. This is because television signal amplifiers are typically wideband in nature, so that they can pick up the whole VHF range of television signals, from Channels 2 through 6, which lie below the FM band, to Channels 7 through 13, which lie well above the FM band. The wide band of reception causes the booster amplifier to amplify not only the TV signals, but the already strong FM signals as well. This unwanted amplification of the interfering signal itself increases the perceived interference level. Thus, if interference occurs, the first step should be to remove or bypass the boosters to see if the interference is reduced or eliminated.