5.328 in the Radio Frequency Table Allocation of Ireland.

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Content Type: ITU FOOTNOTE
Title: 5.328
Description: The use of the band 960-1 215 MHz by the aeronautical radionavigation service is reserved on a worldwide basis for the operation and development of airborne electronic aids to air navigation and any directly associated ground-based facilities. (WRC-2000)
Source: https://search.itu.int/history/HistoryDigitalCollectionDocLibrary/1.43.48.en.101.pdf