FM Station Classes and Contours

The table below lists all FCC FM station classes and corresponding distances to the service contour.

FCC FM Station Classes and Contours Table
FM Station Class Max Erp Max Haat Protected or Primary Service Contour Distance to Protected or Primary Service Contour Distance to 70dBu Contour
A 6.0 kW 100 m 60 dBu 28.3 km 16.2 km
B1 25.0 kW 100 m 57 dBu 44.7 km 23.2 km
B 50.0 kW 150 m 54 dBu 65.1 km 32.6 km
C3 25.0 kW 100 m 60 dBu 39.1 km 23.2 km
C2 50.0 kW 150 m 60 dBu 52.2 km 32.6 km
C1 100.0 kW 299 m 60 dBu 72.3 km 50.0 km
C0 100.0 kW 450 m 60 dBu 83.4 km 59.0 km
C 100.0 kW 600 m 60 dBu 91.8 km 67.7 km

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