Raffaello Tesi

Weather chart

Radiofax is a way to transmit images in gray scale upon the radio. The most common use is the transmission of weather charts on the shortwaves.

Radiofax software

The programme I use for decoding Radiofax transmissions is SeaTTY, a software that decodes the audio signal coming from the line-out of my receiver to the mic-in of my laptop.

Weather radiofax frequencies

There are several radio stations in the world transmitting weather information though radio fax. A complete list of weather stations is made available by the National Oceanic and Atmospheric Administration of the U.S. Department of Commerce. The weather radio stations I was able to receive from Finland are summarised in the following table.

Callsign Country Frequency Emission RPM/IOC Time
GYA United Kingdom 4610 kHz 8040 kHz F3C 120/576 00.00 – 24.00 UTC
DDH3 Germany 3855 kHz F3C 120/576 00.00 – 24.00 UTC
DDK3 Germany 7880 kHz F3C 120/576 00.00 – 24.00 UTC

Radiofax resources on the net:

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