5.131 in the Radio Frequency Table Allocation of Ireland.

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Content Type

ITU FOOTNOTE

Title

5.131

Description

The frequency 4 209.5 kHz is used exclusively for the transmission by coast stations of meteorological and navigational warnings and urgent information to ships by means of narrow-band direct-printing techniques. (WRC-97)

Source

https://search.itu.int/history/HistoryDigitalCollectionDocLibrary/1.43.48.en.101.pdf