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Code of Federal Regulations Title 47. Telecommunication § 47.22.1007 Channels for offshore radiotelephone systems

Current as of October 02, 2022 | Updated by FindLaw Staff

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

488.025

491.025

488.050

491.050

488.075

491.075

488.100

491.100

488.125

491.125

488.150

491.150

488.175

491.175

488.200

491.200

488.225

491.225

488.250

491.250

488.275

491.275

488.300

491.300

488.325

491.325

488.350

491.350

488.375

491.375

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

488.425

491.425

488.450

491.450

488.475

491.475

488.500

491.500

488.525

491.525

488.550

491.550

488.575

491.575

488.600

491.600

488.625

491.625

488.650

491.650

488.675

491.675

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

488.725

491.725

488.750

491.750

488.775

491.775

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

488.825

491.825

488.850

491.850

488.875

491.875

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

489.000

492.000

489.025

492.025

489.050

492.050

489.075

492.075

489.100

492.100

489.125

492.125

489.150

492.150

489.175

492.175

489.200

492.200

489.225

492.225

489.250

492.250

489.275

492.275

489.300

492.300

489.325

492.325

489.350

492.350

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

489.400

492.400

489.425

492.425

489.450

492.450

489.475

492.475

489.500

492.500

489.525

492.525

489.550

492.550

489.575

492.575

489.600

492.600

489.625

492.625

489.650

492.650

489.675

492.675

489.700

492.700

489.725

492.725

489.750

492.750

489.775

492.775

489.800

492.800

489.825

492.825

489.850

492.850

489.875

492.875

489.900

492.900

489.925

492.925

489.950

492.950

489.975

492.975

490.000

493.000

(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 § 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

485.025

482.025

485.050

482.050

485.075

482.075

485.100

482.100

485.125

482.125

485.150

482.150

485.175

482.175

485.200

482.200

485.225

482.225

485.250

482.250

485.275

482.275

485.300

482.300

485.325

482.325

485.350

482.350

485.375

482.375

485.400

482.400

485.425

482.425

485.450

482.450

485.475

482.475

485.500

482.500

485.525

482.525

485.550

482.550

485.575

482.575

485.600

482.600

485.625

482.625

485.650

482.650

485.675

482.675

485.700

482.700

485.725

482.725

485.750

482.750

485.775

482.775

485.800

482.800

485.825

482.825

485.850

482.850

485.875

482.875

485.900

482.900

485.925

482.925

485.950

482.950

485.975

482.975

486.000

483.000

486.025

483.025

486.050

483.050

486.075

483.075

486.100

483.100

486.125

483.125

485.150

483.150

486.175

483.175

486.200

483.200

486.225

483.225

486.250

483.250

486.275

483.275

486.300

483.300

486.325

483.325

486.350

483.350

486.375

483.375

486.400

483.400

486.425

483.425

486.450

483.450

486.475

483.475

486.500

483.500

486.525

483.525

484.550

483.550

486.575

483.575

486.600

483.600

486.625

483.625

486.650

483.650

486.675

483.675

486.700

483.700

486.725

483.725

486.750

483.750

486.775

483.775

486.800

483.800

486.825

483.825

486.850

483.850

486.875

483.875

486.900

483.900

486.925

483.925

486.950

483.950

486.975

483.975

487.050

480.050

Note to paragraph (b) of § 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
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Cite this article: FindLaw.com - Code of Federal Regulations Title 47. Telecommunication § 47.22.1007 Channels for offshore radiotelephone systems - last updated October 02, 2022 | https://codes.findlaw.com/cfr/title-47-telecommunication/cfr-sect-47-22-1007/

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