The newly available spectrum will join the existing Lower C-Band to create a contiguous 440-megahertz block spanning 3.70 GHz to 4.14 GHz, the FCC said Wednesday. How Might the Upper C-Band Auction Strengthen 5G Deployment? The FCC said the combined spectrum is designed to support growing demand for high-capacity wireless connectivity while helping maintain U.S. leadership in next-generation communications. The adopted rules establish a framework to transition incumbent satellite operators from the reconfigured portion of the Upper C-Band while providing incentive payments and covering eligible transition costs through auction proceeds. The framework includes rebates to help support upgrades to aviation equipment and is intended to enable long-term coexistence between wireless and aviation systems.