Versions of 47 USC 1508 - National plan for unlicensed spectrum on LawServer 2024 47 USC 1508 – National plan for unlicensed spectrum 2023 47 USC 1508 – National plan for unlicensed spectrum 2022 47 USC 1508 – National plan for unlicensed spectrum 2021 47 USC 1508 – National plan for unlicensed spectrum 2020 47 USC 1508 – National plan for unlicensed spectrum 2018 47 USC 1508 – National plan for unlicensed spectrum