Sec. 22.913  Effective radiated power limits.

    The effective radiated power (ERP) of transmitters in the Cellular 
Radiotelephone Service must not exceed the limits in this section.
    (a) Maximum ERP. The effective radiated power (ERP) of base 
transmitters and cellular repeaters must not exceed 500 Watts. The ERP 
of mobile transmitters and auxiliary test transmitters must not exceed 7 
Watts.
    (b) Height-power limit. The ERP of base transmitters must not exceed 
the amount that would result in an average distance to the service area 
boundary of 79.1 kilometers (49 miles) for cellular systems authorized 
to serve the Gulf of Mexico MSA and 40.2 kilometers (25 miles) for all 
other cellular systems. The average distance to the service area 
boundary is calculated by taking the arithmetic mean of the distances 
determined using the procedures specified in Sec. 22.911 for the eight 
cardinal radial directions.
    (c) Coordination exemption. Licensees need not comply with the 
height-power limit in paragraph (b) of this section if the proposed 
operation is coordinated with the licensees of all affected cellular 
systems on the same channel block within 121 kilometers (75 miles) and 
concurrence is obtained.