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=== FM Translator Stations === | === FM Translator Stations === | ||
In respect to FM stations | In respect to LPFM stations, [[FM Translator stations|FM translator]] stations are classified into one of three "sub classes". The subclass is based on the translator's maximum effective radiated power (ERP) and overall height above average terrain. The sub-class is based on the average distance to the 60 dBu service contour. LPFM stations must protect FM translators on the same channel, first and second adjacent channels using minimum distance separation. Second adjacent channel spacing can be waived using the same method as waivers in respect to full-service FM stations. | ||
While the FM translator service spacing requirements are not specifically mandated by the LCRA, the FCC has customarily not granted any waivers of distance separation on co-channel and first-adjacent channels, even if a finding of no interference is demonstrated. LPFM stations are required to protect FM translators using directional antennas as if they are using a nondirectional antenna. | While the FM translator service spacing requirements are not specifically mandated by the LCRA, the FCC has customarily not granted any waivers of distance separation on co-channel and first-adjacent channels, even if a finding of no interference is demonstrated. LPFM stations are required to protect FM translators using directional antennas as if they are using a nondirectional antenna. | ||