2026-07269Proposed RuleWallet

FCC Reopens Lower C-Band Docket for Updated Petitions and Public Input

Published Date: 4/15/2026

Proposed Rule

Summary

The FCC is reopening the conversation about rules for the lower C-band airwaves (3.7 to 4.2 GHz) to make sure everything works smoothly with new proposals for the upper C-band. This affects companies using these airwaves for wireless services, and they have until May 5, 2026, to share their thoughts. The goal? A clear, fair plan that could impact how these valuable airwaves are used and paid for.

Analyzed Economic Effects

4 provisions identified: 0 benefits, 3 costs, 1 mixed.

Possible 4 W Power Limit for Mobile Devices

The FCC is seeking comment on a proposal to adopt a 4 Watt Effective Isotropic Radiated Power (EIRP) limit for mobile devices across the Lower C-band (3.7–3.98 GHz) and Upper C-band (3.98–4.2 GHz). If adopted, this technical limit would apply to mobile devices operating in those bands and could affect companies that design, manufacture, or operate such devices.

Limits on Spurious Emissions into 4.2–4.4 GHz

The Bureau seeks comment on setting an appropriate limit on spurious emissions from Lower C-band operations into the 4.2–4.4 GHz band. This would apply to entities operating in the 3.7–3.98 GHz band and relate to protecting radio altimeter operations in 4.2–4.4 GHz.

Harmonize C-band Power and OOBE Rules

The Commission is seeking comment on aligning technical rules—such as power levels and out-of-band emissions (OOBE) limits—across the entire C-band (3.7–4.2 GHz) to create a harmonized wireless operational environment. The Bureau asks whether Lower C-band rules should be changed to match proposed Upper C-band requirements.

Possible New Paperwork or Reporting Burdens

The Public Notice states it "may contain proposed new or modified information collections" under the Paperwork Reduction Act and invites public and OMB comment. If new information collections are adopted, affected parties would face new or changed reporting or recordkeeping obligations.

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Key Dates

Published Date
Comments Due
4/15/2026
5/5/2026

Department and Agencies

Department
Independent Agency
Agency
Federal Communications Commission
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