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73.810: Difference between revisions
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LPFM stations operating on third-adjacent channels has always been a controversy as it is the only broadcast service to permit by rule, the ability for an FM facility to be authorized without respect for any facility on third-adjacent channels except under certain conditions such as a full-service station operating a radio reading service. | LPFM stations operating on third-adjacent channels has always been a controversy as it is the only broadcast service to permit by rule, the ability for an FM facility to be authorized without respect for any facility on third-adjacent channels except under certain conditions such as a full-service station operating a radio reading service. | ||
LPFM stations operating on third-adjacent channels were the main subject of past LPFM related legislation in Congress including the [[Radio Broadcast | LPFM stations operating on third-adjacent channels were the main subject of past LPFM related legislation in Congress including the [[Radio Broadcast Preservation Act of 2001]] and the [[Local Community Radio Act of 2010]]. | ||
== Interference remediation == | == Interference remediation == | ||
The method of how LPFM interference to other FM stations on third-adjacent channel stations is handled is based on whether the LPFM station meets the minimum distance separation standards to a third-adjacent channel FM station using the same distance standards that apply to the protection of second-adjacent channel stations. | The method of how LPFM interference to other FM stations on third-adjacent channel stations is handled is based on whether the LPFM station meets the [[73.807|minimum distance separation]] standards to a [[third-adjacent channel]] FM station using the same distance standards that apply to the protection of second-adjacent channel stations. | ||
=== LPFM stations that do not meet the distance separation requirements === | === LPFM stations that do not meet the distance separation requirements === | ||
The rules state that in order for a complaint to be valid, there must be actual interference as opposed to predicted interference through a contour study. This includes interference to the transmission of any authorized broadcast station, the reception of the input signal of any TV translator, TV booster, FM translator or FM booster station; or the direct reception by the public of the off-the-air signals of any full-service station or previously authorized secondary station (FM translator) where the signal of the regularly-used FM station is impaired by the signal radiated by the LPFM station, regardless of the quality of the reception, the strength of the signal or the channel on which the protected signal is transmitted. | The rules state that in order for a complaint to be valid, there must be actual interference as opposed to predicted interference through a [[Contours|contour]] study. This includes interference to the transmission of any authorized broadcast station, the reception of the input signal of any TV translator, TV booster, [[FM Translator stations|FM translator]] or [[FM Booster stations|FM booster]] station; or the direct reception by the public of the off-the-air signals of any full-service station or previously authorized secondary station (FM translator) where the signal of the regularly-used FM station is impaired by the signal radiated by the LPFM station, regardless of the quality of the reception, the strength of the signal or the channel on which the protected signal is transmitted. | ||
If the FCC notifies the LPFM station of third-adjacent channel interference, the LPFM station may be shut down within 3 minutes of that notification. | If the FCC notifies the LPFM station of third-adjacent channel interference, the LPFM station may be shut down within 3 minutes of that notification. | ||