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
------------------------------------------------------------------------