Sec. 22.759  Power limit for BETRS.

    The effective radiated power of central office and rural subscriber 
station transmitters used in basic exchange telephone radio systems must 
not exceed the limits in this section.
    (a) Maximum ERP. The effective radiated power (ERP) of central 
office and rural subscriber station transmitters in BETRS must not 
exceed the applicable limits in this paragraph under any circumstances.

------------------------------------------------------------------------
                                                             Maximum ERP
                   Frequency range (MHz)                       (watts)  
------------------------------------------------------------------------
152-153....................................................         1400
157-159....................................................          150
454-455....................................................         3500
459-460....................................................          150
------------------------------------------------------------------------

    (b) Height-power limit. The ERP of central office stations in BETRS 
must not exceed the amount calculated as follows:

ERPw=557,418hm2
where ERPw is the effective radiated power in Watts
hm is the average (eight cardinal radial) antenna height 
above average terrain in meters

              Subpart G--Air-Ground Radiotelephone Service