Meteosat WEFAX

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Weather Satellite Modes: APT - LRPT - Meteosat WEFAX
Meteosat WEFAX - WEFAX
Meteosat WEFAX
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Frequencies 1691 MHzMegaHertz (MHz) 10^6 Hz1,691,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,691,000 kHzKiloHertz (kHz) 10^3 Hz
1,691,000 kHzKiloHertz (kHz) 10^3 Hz
1,691 MHzMegaHertz (MHz) 10^6 Hz
1,691,000 kHzKiloHertz (kHz) 10^3 Hz
1,691 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 1,691 MHzMegaHertz (MHz) 10^6 Hz1,691,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,691,000 kHzKiloHertz (kHz) 10^3 Hz
- 1,691 MHzMegaHertz (MHz) 10^6 Hz1,691,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,691,000 kHzKiloHertz (kHz) 10^3 Hz
Mode FMFrequency Modulation
Modulation AMAmplitude Modulation,FMFrequency Modulation
ACF
Location Worldwide
Short Description Meteosat WEFAX is a WEFAX used to transmit satellite images via Meteosat Satellites. WEFAX was introduced with the first Meteosat in 1977.
I/Q Raw Recording
Audio Sample
Meteosat WEFAX is the original WEFAX implementation used to transmit satellite images via Meteosat Satellites. WEFAX was introduced with the first Meteosat in 1977. Meteosat WEFAX uses an AMAmplitude Modulation 2.4 kHzKiloHertz (kHz) 10^3 Hz carrier signal modulated with a 1.6 kHzKiloHertz (kHz) 10^3 Hz video signal.

Characteristics[edit]

WEFAX is a standard data transmission specification used by operators of geostationary meteorological satellites to transmit satellite images and other data in analogue form to low-cost user stations. The format is a derivative of the Automatic Picture Transmission (APT) originally developed for transmission from the polar satellites of the USA.

Samples[edit]


Frequencies[edit]

The international standard broadcast frequency for satellite WEFAX transmissions is 1691,0 MHzMegaHertz (MHz) 10^6 Hz. Some systems, such as EUMETSAT’s METEOSAT, also transmits WEFAX on 1694,5 MHzMegaHertz (MHz) 10^6 Hz.

The composite audio signal is frequency modulated (FMFrequency Modulation) onto 1691.0 MHzMegaHertz (MHz) 10^6 Hz (Channel A1) and 1694.5 MHzMegaHertz (MHz) 10^6 Hz (Channel A2) carriers.

Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]