Sec. 22.1013  Effective radiated power limitations.

    The effective radiated power (ERP) of transmitters in the Offshore 
Radiotelephone Service must not exceed the limits in this section.
    (a) Maximum power. The ERP of transmitters in this service must not 
exceed 1000 Watts under any circumstances.
    (b) Mobile transmitters. The ERP of mobile transmitters must not 
exceed 100 Watts. The ERP of mobile transmitters, when located within 32 
kilometers (20 miles) of the 4.8 kilometer (3 mile) limit, must not 
exceed 25 Watts. The ERP of airborne mobile stations must not exceed 1 
Watt.
    (c) Protection for TV Reception. The ERP limitations in this 
paragraph are intended to reduce the likelihood that interference to 
television reception from offshore radiotelephone operations will occur.
    (1) Co-channel protection. The ERP of offshore stations must not 
exceed the limits in Table I-1 of this section. The limits depend upon 
the height above mean sea level of the offshore transmitting antenna and 
the distance between the antenna location of the offshore transmitter 
and the antenna location of the main transmitter of the nearest full-
service television station that transmits on the TV channel containing 
the channel on which the offshore station transmits.
    (2) Adjacent channel protection. The ERP of offshore stations 
located within 128.8 kilometers (80 miles) of the main transmitter 
antenna of a full service TV station that transmits on a TV channel 
adjacent to the TV channel which contains the channel on which the 
offshore station transmits must not exceed the limits in the Table I-2 
of Sec. 22.1015. The limits depend upon the height above mean sea level 
of the offshore transmitting antenna and the distance between the 
location of the offshore transmitter and the 4.8 kilometer (3 mile) 
limit.

                     Table I-1.--Maximum ERP (Watts)                    
------------------------------------------------------------------------
                                                  30       45       61  
                                                meters   meters   meters
                   Distance                      (100     (150     (200 
                                                feet)    feet)    feet) 
------------------------------------------------------------------------
338 km (210 mi)..............................     1000     1000     1000
330 km (205 mi)..............................     1000      900      800
2 km (200 mi)................................      800      710      630
314 km (195 mi)..............................      590      520      450
306 km (190 mi)..............................      450      400      330
298 km (185 mi)..............................      320      280      240
290 km (180 mi)..............................      250      210      175
282 km (175 mi)..............................      180      150      130
274 km (170 mi)..............................      175      110      100
266 km (165 mi)..............................       95       80       70
258 km (160 mi)..............................       65       55       50
249 km (155 mi)..............................       50       40       35
241 km (150 mi)..............................       35       30       25
------------------------------------------------------------------------