MWARA

From HFUnderground

Major World Air Route Area (MWARA) Frequencies

See: list of MF and HF aeronautical band HF aircraft bands

Vast areas of the world lack the necessary VHF airband communication systems needed to provide reliable radio coverage between aircrews and air traffic controllers. This lack of VHF coverage is generally due to their remote locations - for example much of the airspace over the Atlantic and Pacific oceans. To compensate for this lack of VHF coverage a group of HF Frequencies has been allocated. Each set of frequencies are often referred to as 'families'. Aircraft flying over the major ocean routes often use a combination of HF SSB voice radio, SATVOICE, the ACARS datalink system to communicate with air traffic control and regular VHF aircraft radio to communicate with other aircraft flying at high altitudes. Over the Atlantic and Pacific, the most common frequency for air to air (or "interplane") communications is the so-called "fingers" frequency 123.45 MHz AM. 123.45MHz is designated Pacific Air-to-Air as well as Atlantic Air-to-Air.

• NAT - North Atlantic Communications Frequencies see also: New York Radio
• 2872 kHz USB
• 2889 kHz USB
• 2962 kHz USB
• 2971 kHz USB
• 3016 kHz USB
• 3476 kHz USB
• 4675 kHz USB
• 5598 kHz USB
• 5616 kHz USB
• 5649 kHz USB
• 6622 kHz USB
• 6628 kHz USB
• 8825 kHz USB
• 8831 kHz USB
• 8864 kHz USB
• 8879 kHz USB
• 8891 kHz USB
• 8906 kHz USB
• 11279 kHz USB
• 11309 kHz USB
• 11336 kHz USB
• 13291 kHz USB
• 13306 kHz USB
• 17946 kHz USB

• NAT - North Atlantic VOLMET - Aviation Weather Broadcast Frequencies
• 3485 kHz USB
• 6604 kHz USB
• 10051 kHz USB
• 13270 kHz USB

• CAR - Caribbean Communications Frequencies
• 2887 kHz USB
• 3455 kHz USB
• 5520 kHz USB
• 5550 kHz USB
• 6577 kHz USB
• 6586 kHz USB
• 8846 kHz USB
• 8918 kHz USB
• 11387 kHz USB
• 11396 kHz USB
• 13297 kHz USB
• 17907 kHz USB

• SAT - South Atlantic Communications Frequencies
• 2854 kHz USB
• 2935 kHz USB
• 3452 kHz USB
• 5565 kHz USB
• 6535 kHz USB
• 8861 kHz USB
• 11291 kHz USB
• 13315 kHz USB
• 13357 kHz USB
• 17955 kHz USB

• SAM - South America Communications Frequencies
• 2944 kHz USB
• 3479 kHz USB
• 4669 kHz USB
• 5526 kHz USB
• 6649 kHz USB
• 8855 kHz USB
• 10096 kHz USB
• 11360 kHz USB
• 13297 kHz USB
• 17907 kHz USB

• SAM - South America VOLMET - Aviation Weather Broadcast Frequencies
• 2881 kHz USB
• 5601 kHz USB
• 10024 kHz USB
• 10087 kHz USB
• 13279 kHz USB

• EUR - Europe Communications Frequencies
• 3479 kHz USB
• 5661 kHz USB
• 6598 kHz USB
• 10084 kHz USB
• 13288 kHz USB
• 17961 kHz USB

• EUR - Europe VOLMET - Aviation Weather Broadcast Frequencies
• 3413 kHz USB
• 5505 kHz USB
• 8957 kHz USB
• 13264 kHz USB

• NCA - North Central Asia Communications Frequencies
• 3004 kHz USB
• 3019 kHz USB
• 4678 kHz USB
• 5646 kHz USB
• 5664 kHz USB
• 6592 kHz USB
• 10096 kHz USB
• 13303 kHz USB
• 13315 kHz USB
• 17958 kHz USB

• NCA - North Central Asia VOLMET - Aviation Weather Broadcast Frequencies
• 4663 kHz USB
• 10090 kHz USB
• 13279 kHz USB

• MID - Middle East Communications Frequencies
• 2944 kHz USB
• 2992 kHz USB
• 3467 kHz USB
• 3473 kHz USB
• 4669 kHz USB
• 5658 kHz USB
• 5667 kHz USB
• 6625 kHz USB
• 6631 kHz USB
• 8918 kHz USB
• 8951 kHz USB
• 10018 kHz USB
• 11375 kHz USB
• 13288 kHz USB
• 13312 kHz USB
• 17961 kHz USB

• MID - Middle East VOLMET - Aviation Weather Broadcast Frequencies
• 2956 kHz USB
• 5589 kHz USB
• 8945 kHz USB
• 11393 kHz USB

• AFI - Africa Communications Frequencies
• 2851 kHz USB
• 2878 kHz USB
• 3149 kHz USB
• 3425 kHz USB
• 3467 kHz USB
• 4657 kHz USB
• 5439 kHz USB
• 5652 kHz USB
• 5658 kHz USB
• 6559 kHz USB
• 6574 kHz USB
• 6673 kHz USB
• 8894 kHz USB
• 8903 kHz USB

• AFI - Africa VOLMET - Aviation Weather Broadcast Frequencies
• 2860 kHz USB
• 5499 kHz USB
• 10057 kHz USB
• 13261 kHz USB

• INO - Indian Ocean Communications Frequencies
• 3476 kHz USB
• 5634 kHz USB
• 8879 kHz USB
• 13306 kHz USB
• 17961 kHz USB

• EA - East Asia Communications Frequencies
• 3016 kHz USB
• 3485 kHz USB
• 3491 kHz USB
• 5655 kHz USB
• 5670 kHz USB
• 6571 kHz USB
• 8897 kHz USB
• 10042 kHz USB
• 11396 kHz USB
• 13297 kHz USB
• 13303 kHz USB
• 13309 kHz USB
• 17907 kHz USB

• EA - East Asia VOLMET - Aviation Weather Broadcast Frequencies
• 3458 kHz USB
• 5673 kHz USB
• 8849 kHz USB
• 13285 kHz USB

• SEA - South East Asia Communications Frequencies
• 3470 kHz USB
• 3485 kHz USB
• 5649 kHz USB
• 5655 kHz USB
• 6556 kHz USB
• 8942 kHz USB
• 10066 kHz USB
• 11396 kHz USB
• 13309 kHz USB
• 13318 kHz USB
• 17907 kHz USB

• SEA - South East Asia VOLMET - Aviation Weather Broadcast Frequencies
• 2965 kHz USB
• 6676 kHz USB
• 11387 kHz USB

• CWP - Central West Pacific Communications Frequencies
• 2998 kHz USB
• 3455 kHz USB
• 4666 kHz USB
• 5652 kHz USB
• 5661 kHz USB
• 6532 kHz USB
• 6562 kHz USB
• 8903 kHz USB
• 10081 kHz USB
• 11304 kHz USB
• 13300 kHz USB
• 17904 kHz USB

• CWP - Central West Pacific VOLMET - Aviation Weather Broadcast Frequencies
• 2863 kHz USB
• 6679 kHz USB
• 8828 kHz USB
• 13282 kHz USB

• NP - North Pacific Communications Frequencies
• 2932 kHz USB
• 5628 kHz USB
• 6655 kHz USB
• 6661 kHz USB
• 10048 kHz USB
• 11330 kHz USB
• 13300 kHz USB
• 17904 kHz USB

• CEP - Central East Pacific Communications Frequencies
• 2869 kHz USB
• 3413 kHz USB
• 4657 kHz USB
• 5547 kHz USB
• 5574 kHz USB
• 6673 kHz USB
• 8843 kHz USB
• 10057 kHz USB
• 11282 kHz USB
• 13300 kHz USB
• 17904 kHz USB

• SP - South Pacific Communications Frequencies
• 3467 kHz USB
• 5559 kHz USB
• 5643 kHz USB
• 8867 kHz USB
• 10084 kHz USB
• 11327 kHz USB
• 13300 kHz USB
• 17904 kHz USB

• Worldwide Frequencies - International Aircraft Search and Rescue
• 2182 kHz USB
• 3023 kHz USB
• 5680 kHz USB
• 8364 kHz USB

Note: the search and rescue (SAR) emergency frequencies are used by and for other |services, including the HF maritime mobile service (2-30 MHz HF SSB marine radio). The VHF Guard frequency of 121.5 MHz and the UHF Guard frequency of 243.0 MHz both still apply, see also: VHF marine band frequencies. 123.45 MHz is also heavily used for air to air communications in some busy areas i.e. the North Atlantic Track system area with heavy traffic.

For worldwide listing by families with maps, see the Atlantic page on the Collins website 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.

Radio communications range - planning range. Note that the 10 MHz and above frequencies are generally used during daytime only, and frequencies below 5 MHz are generally used during night time only. The 5-10 MHz region is used 24 hours a day. Frequency usage, noise levels, propagation conditions and interference may result in use of alternate frequencies.

• 2 MHz band / 3 MHz band: Day: 100 km / 60 miles
• 2 MHz band / 3 MHz band: Night: 500 km / 300 miles
• 4 MHz band: Day: 350 km / 215 miles
• 4 MHz band: Night: 1400 km / 870 miles
• 5 MHz band: Day: 450 km / 280 miles
• 5 MHz band: Night: 1800 km / 1120 miles
• 6 MHz band: Day: 650 km / 400 miles
• 6 MHz band: Night: 2200 km / 1350 miles
• 8 MHz band / 9 MHz band: Day: 1000 km / 600 miles
• 8 MHz band / 9 MHz band: Night: 3400 km / 2100 miles
• 10 MHz band: Day: 1250 km / 775 miles
• 11 MHz band: Day: 1500 km / 930 miles
• 13 MHz band: Day: 2000 km / 1200 miles
• 17 MHz band - 18 MHz band: Day: 2600 km / 1600 miles

For an easier to read chart of frequencies, see the MWARA article on the RadioReference wiki (note: offsite wiki)