FCC Dives Back into C-Band Spectrum Sharing Drama
Published Date: 4/15/2026
Proposed Rule
Summary
The FCC is revisiting some requests about how the lower C-band spectrum (used for wireless internet and TV) should be shared and managed. This affects companies using this airspace, aiming to make rules clearer and more consistent by May 5, 2026. The changes could impact how spectrum is used and might influence future costs or tech upgrades.
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Analyzed Economic Effects
2 provisions identified: 0 benefits, 0 costs, 2 mixed.
Proposal: 4 Watt EIRP Cap for Mobile Devices
If you operate wireless networks or make mobile devices that use the C-band (3.7–4.2 GHz), the FCC is asking about a proposal to adopt a 4 Watt Effective Isotropic Radiated Power (EIRP) limit for mobile devices across both the Lower (3.7–3.98 GHz) and Upper (3.98–4.2 GHz) C-band. The agency refreshed the record on April 10, 2026 and invited comments on this proposal by May 5, 2026.
Limits on Spurious Emissions to Protect Altimeters
If you run terrestrial wireless operations in the Lower C-band (3.7–3.98 GHz), the FCC is refreshing the record on setting an appropriate limit on spurious emissions into 4.2–4.4 GHz to account for radio altimeter operations and on harmonizing technical rules across the entire C-band. The Bureau asked for technical comments and for commenters to address costs and benefits, with comments due May 5, 2026.
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