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[deg]45[min] on the East to longitude W.94[deg]00[min] 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......... 491.225488.050...................... 491.050 488.250......... 491.250488.075...................... 491.075 488.275......... 491.275488.100...................... 491.100 488.300......... 491.300488.125...................... 491.125 488.325......... 491.325488.150...................... 491.150 488.350......... 491.350488.175...................... 491.175 488.375......... 491.375488.200...................... 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......... 491.575488.450...................... 491.450 488.600......... 491.600488.475...................... 491.475 488.625......... 491.625488.500...................... 491.500 488.650......... 491.650488.525...................... 491.525 488.675......... 491.675488.550...................... 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......... 491.775488.750...................... 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......... 491.875488.850...................... 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......... 492.200489.025...................... 492.025 489.225......... 492.225489.050...................... 492.050 489.250......... 492.250489.075...................... 492.075 489.275......... 492.275489.100...................... 492.100 489.300......... 492.300489.125...................... 492.125 489.325......... 492.325
489.150...................... 492.150 489.350......... 492.350489.175...................... 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......... 492.725489.425...................... 492.425 489.750......... 492.750489.450...................... 492.450 489.775......... 492.775489.475...................... 492.475 489.800......... 492.800489.500...................... 492.500 489.825......... 492.825489.525...................... 492.525 489.850......... 492.850489.550...................... 492.550 489.875......... 492.875489.575...................... 492.575 489.900......... 492.900489.600...................... 492.600 489.925......... 492.925489.625...................... 492.625 489.950......... 492.950489.650...................... 492.650 489.975......... 492.975489.675...................... 492.675 490.000......... 493.000489.700...................... 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[deg] 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[deg]45[min] on the East to longitude W.95[deg]00[min] 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......... 483.025485.050...................... 482.050 486.050......... 483.050485.075...................... 482.075 486.075......... 483.075485.100...................... 482.100 486.100......... 483.100485.125...................... 482.125 486.125......... 483.125485.150...................... 482.150 485.150......... 483.150485.175...................... 482.175 486.175......... 483.175485.200...................... 482.200 486.200......... 483.200485.225...................... 482.225 486.225......... 483.225485.250...................... 482.250 486.250......... 483.250485.275...................... 482.275 486.275......... 483.275485.300...................... 482.300 486.300......... 483.300485.325...................... 482.325 486.325......... 483.325485.350...................... 482.350 486.350......... 483.350485.375...................... 482.375 486.375......... 483.375485.400...................... 482.400 486.400......... 483.400485.425...................... 482.425 486.425......... 483.425485.450...................... 482.450 486.450......... 483.450485.475...................... 482.475 486.475......... 483.475485.500...................... 482.500 486.500......... 483.500485.525...................... 482.525 486.525......... 483.525485.550...................... 482.550 484.550......... 483.550485.575...................... 482.575 486.575......... 483.575485.600...................... 482.600 486.600......... 483.600485.625...................... 482.625 486.625......... 483.625485.650...................... 482.650 486.650......... 483.650485.675...................... 482.675 486.675......... 483.675485.700...................... 482.700 486.700......... 483.700485.725...................... 482.725 486.725......... 483.725485.750...................... 482.750 486.750......... 483.750485.775...................... 482.775 486.775......... 483.775485.800...................... 482.800 486.800......... 483.800485.825...................... 482.825 486.825......... 483.825485.850...................... 482.850 486.850......... 483.850485.875...................... 482.875 486.875......... 483.875485.900...................... 482.900 486.900......... 483.900485.925...................... 482.925 486.925......... 483.925485.950...................... 482.950 486.950......... 483.950485.975...................... 482.975 486.975......... 483.975486.000...................... 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[deg]00[min] 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[deg]00[min] 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: 476.025 479.025476.050 479.050476.075 479.075476.100 479.100476.125 479.125476.150 479.150476.175 479.175476.200 479.200476.225 479.225476.250 479.250476.275 479.275476.300 479.300476.325 479.325476.350 479.350476.375 479.375476.400 479.400476.425 479.425476.450 479.450476.475 479.475476.500 479.500476.525 479.525476.550 479.550476.575 479.575476.600 479.600476.625 479.625476.650 479.650476.675 479.675476.700 479.700476.725 479.725476.750 479.750476.775 479.775476.800 479.800476.825 479.825476.850 479.850476.875 479.875476.900 479.900477.000 480.000477.025 480.025477.075 480.075477.100 480.100477.125 480.125477.150 480.150477.175 480.175477.200 480.200477.225 480.225477.250 480.250477.275 480.275477.300 480.300477.325 480.325477.350 480.350477.375 480.375477.400 480.400477.425 480.425477.450 480.450477.475 480.475477.500 480.500477.525 480.525477.550 480.550477.575 480.575477.600 480.600477.625 480.625477.650 480.650477.675 480.675477.700 480.700477.725 480.725477.750 480.750477.775 480.775477.800 480.800477.825 480.825477.850 480.850477.875 480.875477.900 480.900477.925 480.925477.950 480.950477.975 480.975
[59 FR 59507, Nov. 17, 1994; 60 FR 9891, Feb. 22, 1995]