Sec.  22.1007   Channels for offshore radiotelephone systems.

   

   The channels listed in this section are allocated for paired
   assignment to transmitters located in the specified geographical zones
   that provide offshore radiotelephone service. All channels have a
   bandwidth of 20 kHz and are designated by their center frequencies in
   MegaHertz.

   (a) Zone A--Southern Louisiana. The geographical area in Zone A is
   bounded as follows:

   From longitude W.87°45' on the East to longitude W.94°00' on the West
   and from the 4.8 kilometer (3 mile) limit along the Gulf of Mexico
   shoreline on the North to the limit of the Outer Continental Shelf on
   the South.

   (1) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for voice-grade general
   communications:


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
488.025......................  491.025      488.225.........  491.225
488.050......................  491.050      488.250.........  491.250
488.075......................  491.075      488.275.........  491.275
488.100......................  491.100      488.300.........  491.300
488.125......................  491.125      488.325.........  491.325
488.150......................  491.150      488.350.........  491.350
488.175......................  491.175      488.375.........  491.375
488.200......................  491.200      488.400.........  491.400
------------------------------------------------------------------------

   (2) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for voice-grade general
   communications and private line service:


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
488.425......................  491.425      488.575.........  491.575
488.450......................  491.450      488.600.........  491.600
488.475......................  491.475      488.625.........  491.625
488.500......................  491.500      488.650.........  491.650
488.525......................  491.525      488.675.........  491.675
488.550......................  491.550      488.700.........  491.700
------------------------------------------------------------------------

   (3) These channels may be assigned for use by relay stations in
   systems where it would be impractical to provide offshore
   radiotelephone service without the use of relay stations.


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
488.725......................  491.725      488.775.........  491.775
488.750......................  491.750      488.800.........  491.800
------------------------------------------------------------------------

   (4) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for emergency communications
   involving protection of life and property.


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
488.825......................  491.825      488.875.........  491.875
488.850......................  491.850      488.900.........  491.900
------------------------------------------------------------------------

   (5) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for emergency auto alarm and
   voice transmission pertaining to emergency conditions only.


------------------------------------------------------------------------
                        Central              Subscriber
------------------------------------------------------------------------
                488.950................  491.950
------------------------------------------------------------------------

   (6) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for emergency shut-off remote
   control telemetry, environmental data acquisition and disseminations,
   or facsimile transmissions.


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
489.000......................  492.000      489.200.........  492.200
489.025......................  492.025      489.225.........  492.225
489.050......................  492.050      489.250.........  492.250
489.075......................  492.075      489.275.........  492.275
489.100......................  492.100      489.300.........  492.300
489.125......................  492.125      489.325.........  492.325
489.150......................  492.150      489.350.........  492.350
489.175......................  492.175      489.375.........  492.375
------------------------------------------------------------------------

   (7) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for private line service:


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
489.400......................  492.400      489.725.........  492.725
489.425......................  492.425      489.750.........  492.750
489.450......................  492.450      489.775.........  492.775
489.475......................  492.475      489.800.........  492.800
489.500......................  492.500      489.825.........  492.825
489.525......................  492.525      489.850.........  492.850
489.550......................  492.550      489.875.........  492.875
489.575......................  492.575      489.900.........  492.900
489.600......................  492.600      489.925.........  492.925
489.625......................  492.625      489.950.........  492.950
489.650......................  492.650      489.975.........  492.975
489.675......................  492.675      490.000.........  493.000
489.700......................  492.700
------------------------------------------------------------------------

   (8) Interstitial channels. Interstitial channels are those with center
   frequencies offset by ±12.5 kHz from the listed center frequencies.
   The FCC may assign interstitial channels to offshore stations in Zone
   A subject to the following conditions:

   (i) Offshore stations transmitting on interstitial channels must be
   located east of W.92° longitude.

   (ii) Operations on interstitial channels are considered to be
   secondary to operations on channels with the listed center
   frequencies.

   (iii) Offshore stations operating on interstitial channels must be
   used only for voice grade general communications or to provide for
   private line service.

   Note to paragraph (a) of Sec. 22.1007: These channels are contained in UHF
   TV Channel 17.

   (b) Zone B--Southern Louisiana--Texas. (1) The geographical area in
   Zone B is bounded as follows:

   From longitude W.87°45' on the East to longitude W.95°00' on the West
   and from the 4.8 kilometer (3 mile) limit along the Gulf of Mexico
   shoreline on the North to the limit of the Outer Continental Shelf on
   the South.

   (2) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for voice-grade general
   communications and private line service:


------------------------------------------------------------------------
           Central              Subscriber       Central      Subscriber
------------------------------------------------------------------------
485.025......................  482.025      486.025.........  483.025
485.050......................  482.050      486.050.........  483.050
485.075......................  482.075      486.075.........  483.075
485.100......................  482.100      486.100.........  483.100
485.125......................  482.125      486.125.........  483.125
485.150......................  482.150      485.150.........  483.150
485.175......................  482.175      486.175.........  483.175
485.200......................  482.200      486.200.........  483.200
485.225......................  482.225      486.225.........  483.225
485.250......................  482.250      486.250.........  483.250
485.275......................  482.275      486.275.........  483.275
485.300......................  482.300      486.300.........  483.300
485.325......................  482.325      486.325.........  483.325
485.350......................  482.350      486.350.........  483.350
485.375......................  482.375      486.375.........  483.375
485.400......................  482.400      486.400.........  483.400
485.425......................  482.425      486.425.........  483.425
485.450......................  482.450      486.450.........  483.450
485.475......................  482.475      486.475.........  483.475
485.500......................  482.500      486.500.........  483.500
485.525......................  482.525      486.525.........  483.525
485.550......................  482.550      484.550.........  483.550
485.575......................  482.575      486.575.........  483.575
485.600......................  482.600      486.600.........  483.600
485.625......................  482.625      486.625.........  483.625
485.650......................  482.650      486.650.........  483.650
485.675......................  482.675      486.675.........  483.675
485.700......................  482.700      486.700.........  483.700
485.725......................  482.725      486.725.........  483.725
485.750......................  482.750      486.750.........  483.750
485.775......................  482.775      486.775.........  483.775
485.800......................  482.800      486.800.........  483.800
485.825......................  482.825      486.825.........  483.825
485.850......................  482.850      486.850.........  483.850
485.875......................  482.875      486.875.........  483.875
485.900......................  482.900      486.900.........  483.900
485.925......................  482.925      486.925.........  483.925
485.950......................  482.950      486.950.........  483.950
485.975......................  482.975      486.975.........  483.975
486.000......................  483.000      487.050.........  480.050
------------------------------------------------------------------------

   Note to paragraph (b) of Sec. 22.1007: These channels are contained in UHF
   TV Channel 16.

   (c) Zone C--Southern Texas. The geographical area in Zone C is bounded
   as follows:

   Longitude W.94°00' on the East, the 4.8 kilometer (3 mile) limit on
   the North and West, a 282 kilometer (175 mile) radius from the
   reference point at Linares, N.L., Mexico on the Southwest, latitude
   N.26°00' on the South, and the limits of the outer continental shelf
   on the Southeast.

   (1) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for emergency auto alarm and
   voice transmission pertaining to emergency conditions only.


------------------------------------------------------------------------
                        Central              Subscriber
------------------------------------------------------------------------
                476.950................  479.950
------------------------------------------------------------------------

   (2) These channels may be assigned for use by offshore central
   (base/fixed) or subscriber stations (fixed, temporary fixed, surface
   and/or airborne mobile) as indicated, for voice-grade general
   communications and private line service:




 476.025           479.025
 476.050           479.050
 476.075           479.075
 476.100           479.100
 476.125           479.125
 476.150           479.150
 476.175           479.175
 476.200           479.200
 476.225           479.225
 476.250           479.250
 476.275           479.275
 476.300           479.300
 476.325           479.325
 476.350           479.350
 476.375           479.375
 476.400           479.400
 476.425           479.425
 476.450           479.450
 476.475           479.475
 476.500           479.500
 476.525           479.525
 476.550           479.550
 476.575           479.575
 476.600           479.600
 476.625           479.625
 476.650           479.650
 476.675           479.675
 476.700           479.700
 476.725           479.725
 476.750           479.750
 476.775           479.775
 476.800           479.800
 476.825           479.825
 476.850           479.850
 476.875           479.875
 476.900           479.900
 477.000           480.000
 477.025           480.025
 477.075           480.075
 477.100           480.100
 477.125           480.125
 477.150           480.150
 477.175           480.175
 477.200           480.200
 477.225           480.225
 477.250           480.250
 477.275           480.275
 477.300           480.300
 477.325           480.325
 477.350           480.350
 477.375           480.375
 477.400           480.400
 477.425           480.425
 477.450           480.450
 477.475           480.475
 477.500           480.500
 477.525           480.525
 477.550           480.550
 477.575           480.575
 477.600           480.600
 477.625           480.625
 477.650           480.650
 477.675           480.675
 477.700           480.700
 477.725           480.725
 477.750           480.750
 477.775           480.775
 477.800           480.800
 477.825           480.825
 477.850           480.850
 477.875           480.875
 477.900           480.900
 477.925           480.925
 477.950           480.950
 477.975           480.975


   [ 59 FR 59507 , Nov. 17, 1994;  60 FR 9891 , Feb. 22, 1995]