VOLMET aviation broadcasts contain critical meteorological information for aircraft in flight( “en vol”, as the French would say), broadcasts include; TAF (Terminal Aerodrome Forecast), SIGMET (Significant Meteorological Information), and METAR (Meteorological Terminal Aviation Routine) information.
HF VOLMET broadcasts generally cover a large geographical area and are intercepted by flight crews whilst en-route to an area and out of local VHF ATIS (Automatic Terminal Information Service) broadcast range. The information received is used to determine possible flight route deviations by evaluating predicted weather conditions along their flightpath, which are out of aircraft weather radar range.
VOLMET terminal information for Brisbane, Calcutta, Bangkok, Karachi, Singapore, and Bombay is broadcast sequentially on 6676 kHz beginning on the hour and 30 minutes past the hour.
VOLMET terminal information, Tokyo, Hong Kong, Auckland, and Honolulu is broadcast sequentially on 8828 kHz beginning 10 minutes past the hour. All broadcasts are made using USB (upper sideband).
VOLMET broadcasts originate from the location on which they are reporting and can provide shortwave enthusiasts with a good indication of propagation conditions.
4WD Club VKS737
The Australian outback is a popular destination for travellers who want to see the real Australia and get off the beaten track. However, the isolation of remote areas is a constant concern for travellers and regular communications can help to identify potential hazards and ensure travelling safety.
The VKS-737 4WD shortwave radio network provides a communication service for travellers including updates of the latest road condition, weather forecasts, bushfire reports, and a messaging service for travellers throughout Australia’s most remote areas.
The VKS-737 4WD shortwave radio network provides scheduled broadcasts on their primary frequency 8022 kHz and backup frequency 5455 kHz. Additionally, casual “chat channels” can be heard on 3995, 6796, 10180, 11612, 14977 kHz.
Typically, East coast broadcasts can be heard at 14.30, 17.30, 18.30, and 20:00 AEST and West coast broadcast can be heard at two hours prior to the Eastern broadcasts in winter and three hours prior in summer.
The VKS-737 4WD shortwave radio network comprises base stations located at Perth, Derby, Darwin, Alice Springs, Charters Towers, St Marys (Tasmania), Newcastle, and Swan Hill.
For more information about the VKS-737 4WD shortwave radio network:
Australian Longwave or Non Directional Beacon (NDB) Frequencies
These broadcasts are made to provide aviators with weather conditions at their point of arrival or departure and for navigation purposes. There are over 100 NDB transmitters operating in Australia, the list below provides some examples.
Bankstown 416, Richmond 347 ,Camden 281 ,Nowra 359 ,Brisbane 302 Archerfield 419, Mt Isa 338, Ballarat 239 ,Avalon 404 , Moorabbin 398, Adelaide 362, Parafield 416, Perth 272, Darwin 344, Tindal 356, Alice Springs 335, Hobart 362, Launceston 242, King Island 332, Lord Howe Island 272, Broken Hill 332, Mildura 272, Nowra 359. (All frequencies are in kHz and use AM modulation)