StacksVerified U.S. regulatory reference

47 CFR §22.383

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Licensees may install and operate in-building radiation systems without applying for authorization or notifying the FCC, provided that the locations of the in-building radiation systems are within the protected service area of the licensee's authorized transmitter(s) on the same channel or channel block.