FCC reshapes the 900 MHz band for industrial broadband

The U.S. Federal Communications Commission (FCC) has finalized rules effective 30 April 2026 rules governing the 900 MHz band to enable private wireless broadband and support grid automation, industrial IoT and secure private LTE operations for electric utilities, gas and water utilities and critical infrastructure users.

The 896–901 / 935–940 MHz band, referred to as the 900 MHz band, has historically been dominated by narrowband land mobile radio (LMR) systems that support voice and low-speed data. 
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The FCC has adopted rules that allow broadband deployment across all 10 MHz of the band through a county-by-county transition framework through a largely voluntary, market-driven transition framework, with limited mandatory relocation in certain circumstances.

For operators of critical infrastructure in sectors such as electric utilities, oil and gas, mining and logistics hubs, this is a shift. These often require connectivity where public cellular networks are unsuitable, particularly for applications such as grid automation, Supervisory Control and Data Acquisition (SCADA), Advanced Metering Infrastructure (AMI) backhaul and substation connectivity. It is now possible to reevaluate device upgrades or new radio platforms.

A flexible structure allows broadband deployment without forcing displacement of incumbents that rely on narrowband systems. The FCC has established a coexistence and optional transition model under which narrowband (voice-centric) systems under Part 90 of the FCC rules may continue operating under the revised framework, subject to the band configuration and transition status in a given county.  They are not subject to relocation in the key narrowband segments.
Under the new rules, the 900 MHz band can operate in one of three configurations, on a county-by-county basis.

1. Legacy narrowband configuration
   This continues the LMR use across the full band and is suitable where there is no current need for broadband.

2. 3/3 broadband configuration (existing framework)
   - 6 MHz designated for broadband (3 MHz uplink / 3 MHz downlink)
   - 4 MHz reserved for narrowband operations

3. New 5/5 broadband configuration
   The full 10 MHz is used for broadband (5 MHz uplink / 5 MHz downlink) and no narrowband channels remain in counties that fully transition.

This flexibility enables phased upgrades that minimize disruption while still supporting long-term modernization. Communication networks can evolve in line with business priorities, regulatory requirements and asset lifecycles.

Where a licensee transitions county-by-county to 5/5 MHz broadband under the FCC’s revised rules, equipment changes may also require updated equipment authorization, which could involve a new certification filing or, in some cases, a Class II permissive change, depending on the device modifications.