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FCC to Explore Opening up More Mid-Band Spectrum

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Feb 27, 2025, 1:28 PM by Rich Brome @rbrome.bsky.social
updated Feb 27, 2025, 3:12 PM

Updated: Added info on current users of this spectrum.

The FCC has announced proceedings to explore opening up more of the C Band to "more intensive use", possibly including lucrative mid-band 5G service. This large swath of spectrum spans 3.98 – 4.2 GHz, also known as the Upper C Band. The Lower C Band (3.45 – 3.55 GHz and 3.7 – 3.98 GHz) was auctioned off to mobile carriers starting in 2020, and is already a critical part of major 5G networks in the US. Phones and networks using band 77 use Lower C Band spectrum, and band 77 already covers this new Upper C Band as well. Mid-band radio frequencies such as these offer an excellent balance of high-speed data capacity and reach (coverage). The 4.0 – 4.2 GHz band is currently used in the US by satellite operators, including SES, Intelsat, and others, for space-to-earth (downlink) communication. Separately, the FCC is starting the process to re-auction some AWS-3 licenses that were returned to it when certain winning bidders (from Auction 97, in 2014) defaulted on their payment obligations. AWS-3 falls within band 66 and is already used for 5G by companies like AT&T, Boost, and Verizon. The frequencies of AWS-3 include 1695 – 1710 MHz, 1755 – 1780 MHz, and 2155 – 2180 MHz.

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