HF radiofax (weather fax) broadcasts for Australia, the Indian Ocean and South East Asia: when each station transmits its weather charts, with frequencies, on the timelines of your cities and in your own time zone.
The Australian Bureau of Meteorology runs two radiofax stations that cover a huge area of ocean: Charleville in Queensland for eastern Australia, the Tasman Sea and the South-West Pacific, and Wiluna in Western Australia for the eastern Indian Ocean. Both transmit almost around the clock on five frequencies, switching between them as propagation changes from day to night. Bangkok (HSW64) adds charts for South East Asia.
Australia itself spans three time zones, and only some states change their clocks in summer, so the same UTC window falls at different local hours in Perth, Brisbane and Sydney. Times here are the transmission windows of the EiBi shortwave schedule, converted to your local time; for the Bureau of Meteorology each window lists the charts it sends — surface analyses, wind and wave forecasts and satellite pictures — with a link to the station’s schedule. Frequencies are the assigned ones: tune 1.9 kHz lower in USB.
Select a transmission window to see its frequencies, the charts and the transmitter, with a link to listen on an online SDR receiver.
The Bureau of Meteorology transmits from Charleville, Queensland (VMC) on 2628, 5100, 11030, 13920 and 20469 kHz, and from Wiluna, Western Australia (VMW) on 5755, 7535, 10555, 15615 and 18060 kHz. Lower frequencies are used at night and higher ones by day.
Charleville covers eastern Australia, the Tasman Sea and the South-West Pacific; Wiluna covers western Australia and the eastern Indian Ocean. Both send surface analyses, wind and wave forecasts and satellite pictures.
HSW64 Bangkok transmits on 7396.8 and 17520 kHz with charts for South East Asia, many times a day.
The frequencies listed are the assigned ones. Tune your receiver 1.9 kHz lower in USB and decode with radiofax software such as fldigi.
In Shortwave. Perfect Clock — a world clock with your calendar across time zones.