CTHIn ForceLegislation
Australian Radiofrequency Spectrum Plan (2025 Update) 2021
155BThe band 21 870–21 924 kHz is used by the fixed service for provision of services related to aircraft flight safety.
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155B The band 21 870–21 924 kHz is used by the fixed service for provision of services related to aircraft flight safety.
156 Additional allocation: in Nigeria, the band 22 720–23 200 kHz is also allocated to the meteorological aids service (radiosondes) on a primary basis.
156A The use of the band 23 200–23 350 kHz by the fixed service is limited to provision of services related to aircraft flight safety.