International Air Routes
Vast areas of the world lack the necessary local VHF radio communication systems needed to provide reliable radio coverage between aircrews and air traffic controllers.
The lack of VHF coverage within most of these areas is due to the very remote location of these regions, for example much of the airspace over the Atlantic and Pacific oceans lacks VHF communications as it is impossible to install transmitters on a reliable platform within these regions.
As a result, a network of shortwave (HF) frequencies have been allocated to provide long range voice communications between aircrews and ATC facilities.
Aircraft arriving and departing from these locations: Auckland, Brisbane, Nadi, Pascua (Easter Island), Port Vila, Raratonga, San Francisco, Tahiti, Wallis can be heard on 3467, 5643, 8864 13261 and 17904 kHz.
Vast areas of the world lack the necessary local VHF radio communication systems needed to provide reliable radio coverage between aircrews and air traffic controllers.
The lack of VHF coverage within most of these areas is due to the very remote location of these regions, for example much of the airspace over the Atlantic and Pacific oceans lacks VHF communications as it is impossible to install transmitters on a reliable platform within these regions.
As a result, a network of shortwave (HF) frequencies have been allocated to provide long range voice communications between aircrews and ATC facilities.
Aircraft arriving and departing from these locations: Auckland, Brisbane, Nadi, Pascua (Easter Island), Port Vila, Raratonga, San Francisco, Tahiti, Wallis can be heard on 3467, 5643, 8864 13261 and 17904 kHz.