Frequency Allocations

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Frequency allocations to Space Operations (SO), Space Research (SR), Deep Space (DS), and Earth Exploration (EES). Ref: ECSS-E-ST-50-05C


S band
Frequency (MHz) Service Direction Status
2025 - 2110 SR, SO, EES Earth-Space Primary
2110 - 2120 SR (DS) Earth-Space Primary
2200 - 2290 SR, SO, EES Space-Earth Primary
2290 - 2300 SR (DS) Space-Earth Primary


X band
Frequency (MHz) Service Direction Status
7145 - 7190 SR (DS) Earth-Space Primary
7190 - 7235 SR Earth-Space Primary
8025 - 8400 EES Space-Earth Primary
8400 - 8450 SR (DS) Space-Earth Primary
8450 - 8500 SR Space-Earth Primary


Ka band
Frequency (MHz) Service Direction Status
25500 - 27000 SR, EES Space-Earth Primary
31800 - 32300 SR (DS) Space-Earth Primary
34200 - 34700 SR (DS) Earth-Space Primary
37000 - 38000 SR Space-Earth Primary
40000 - 40500 SR Earth-Space Primary
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