§ 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 § 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)
    Distance     30 meters (100 feet) 45 meters (150 feet) 61 meters (200 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

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