MWARA is the term for Major World Air Route Areas, which support HF Radio communications to aircraft outside of VHF range.

All frequencies listed are in KHz (USB mode). Groups of frequencies in one region are often referred to as 'families'.

For worldwide listing by families with maps, see the Atlantic page for the Atlantic routes, and for the Pacific, polar and Mexican routes see the Pacific, Polar and Mexican page from the Collins website. These pages also contain charts with up to date LDOC (Long Distance Operational Control) frequencies

Atlantic Ocean

North Atlantic (NAT)

Complete NAT
Numeric Listing

NOTES:

NY Center only has NAT-A and NAT-E implemented. All frequencies for NAT *confirmed* as of November 2020.

For the latest NAT information please see this official IAA web page: North Atlantic Communications Frequencies

NAT-A

[Routes between 43N and 47N] [During OFF-PEAK hours, primary assignment for SOUTHERLY routes]

New York Radio, Gander Radio, Santa Maria Radio, Shanwick Radio

 3016  5598  8906  11396  13306  17946  21925

NAT-B

[Routes between 47N and 64N] [Assignments to aircraft flying EASTBOUND or WESTBOUND tracks] [Primary for CENTRAL routes]

Gander Radio, Iceland Radio, Shanwick Radio

 2899  5616  8864  13291

NAT-C

[Routes between 47N and 64N] [Assignments to aircraft flying EASTBOUND or WESTBOUND tracks] [Primary for CENTRAL routes]

Gander Radio, Iceland Radio, Shanwick Radio

 2872  5649  8879  11336

NAT-D

[Routes north of 62N] [During OFF-PEAK hours, primary assignment for NORTHERLY routes]

Bodo Radio, Gander Radio, Iceland Radio, Shanwick Radio, Arctic Radio

 2971  4675  8891  13291

NAT-E

[Routes between New York and Santa Maria, south of 43N] [Unguarded in OFF-PEAK hours]

New York Radio, Santa Maria Radio

 2962  6628  8825  11309  13354  17952  21964

NAT-F

[Routes within Gander and Shanwick areas only]

Gander Radio, Shanwick Radio

 3476  6622  8831  13291

NAT-H

[Routes assigned to aircraft flying entirely within Santa Maria area]

Santa Maria Radio

3491  6667  10021

NAT-I

Shanwick Radio

2890  6595

NAT-J

Shanwick Radio

3446  6547

RDARA (Regional and Domestic Air Route Area)

[Routes over land with no VHF coverage]

Region 1/1E

 3491 5583 6667 10021 10036

Region 1B

 2890 5484 5568 6550 6595

Region 1D

 2989 5637

Region 10E

  2944 3446 4651 5460 5481 5559 5577 6547

South Atlantic (SAT)

Complete SAT
Numeric Listing

SAT-1

Brasilia Radio, Canarias Radio, Cayenne Radio, Dakar Radio, Manaus Radio, Paramaribo Radio, Recife Radio, Rio de Janerio Radio, Sal Island Radio

3452 6535 8861 13357 17955

SAT-2

Canarias Radio, Cayenne Radio, Dakar Radio, Manaus Radio, Johannesburg Radio, Paramaribo Radio, Recife Radio, Rio de Janerio Radio, Sal Island Radio

2854 5565 11291 13315 17955

Caribbean Sea (CAR)

Complete CAR
Numeric Listing

2887	CAR-A
3455	CAR-A
5520	CAR-B
5550	CAR-A
6577	CAR-A
6586	CAR-B
8846	CAR-A
8918	CAR-B
11330	CAR-B
11396	CAR-A
13297	CAR-B
17907	CAR-B
21985	CAR-B

CAR-A

New York Radio

 2887  3455  5550  6577  8846  11396

CAR-B

New York Radio

 5520  6586  8918  11330  13297  17907  21985

Pacific Ocean

Complete Pacific
Numeric Listing

Central East Pacific (CEP)

CEP-1

San Francisco Radio

 3413 5574 8843 8915 13354

CEP-2 / CEP-3

San Francisco Radio

 2869 3452 5547 6673 10057 11282 13288 21964

Central West Pacific (CWP)

CWP-1

San Francisco Radio, Tokyo Radio, Manila Radio

 2998 3455 4666 6532 8903 11384 13300 17904

CWP-2

San Francisco, Guam, Tokyo

 2998 5652 6532 8870 11384 13300 17904 21985

North Pacific (NP)

San Francisco Radio, Tokyo Radio

 5628  6655  8951  10048  13339  17946  21925

South Pacific (SP)

San Francisco, Auckland, Brisbane, Nadi, Tahiti, Clipperton

 3467  5643  8867  13261  17904

South Pacific LDOC - Long Distance Operational Control

Used as alternates and for emergency messages in South Pacific

 3007  6637  10072  13339  17940

Asia

East Asia (EA)

Beijing, Guangzhou, Pyongyang, Shanghai

 3016 3485 3491 5655 5670 6571 8897 10042 11396 13297 13303 13309 17907

North Central Asia (NCA)

Magadan, Irkutsk, Khabarovsk, Petropavlovsk, Syktyvkar

 2964 4712 6529 6544 6589 6631 6692 8837 11390

Southeast Asia (SEA)

SEA-1

Bombay Radio, Calcutta Radio, Colombo Radio

3470  5670  6556  10066  11285  13318  17907

SEA-2

Bangkok, Jakarta, Singapore, Tokyo

3485  5649  5655  8942  11396  13309  17907

SEA-3

Brisbane, Jakarta, Singapore

3470  6556  11396  13318  17907

Polar

Aircraft on Polar Route can contact SFO ARINC on their LDOC frequencies through Barrow, Alaska remote site

Indian Ocean (INO)

Bombay Radio, Colombo Radio

3476  5634  8879  13306  17961

Disclaimer

This reproduction, partial or complete, of any National Geospatial-Intelligence Agency (NGA), National Imagery and Mapping Agency (NIMA) or Defense Mapping Agency (DMA) product, information or data is not approved, authorized or endorsed by the Secretary of Defense, the Director of Central Intelligence, the Director, NGA or any other element of the US Government. The US Government and NGA accept no liability for the accuracy or quality of this reproduction or the use of any NGA, NIMA or DMA products, information or data.

MWARA

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