U.S. Code of Federal Regulations

Regulations most recently checked for updates: Mar 10, 2026

All TitlesTitle 47Chapter IPart 90Subpart J - Subpart J—Non-Voice and Other Specialized Operations
§ 90.231 - [Reserved]
§ 90.233 - Base/mobile non-voice operations.
§ 90.235 - Secondary fixed signaling operations.
§ 90.237 - Interim provisions for operation of radioteleprinter and radiofacsimile devices.
§ 90.238 - Telemetry operations.
§ 90.239 - [Reserved]
§ 90.241 - Radio call box operations.
§ 90.242 - Travelers' information stations.
§ 90.243 - Mobile relay stations.
§ 90.245 - Fixed relay stations.
§ 90.247 - Mobile repeater stations.
§ 90.248 - Wildlife and ocean buoy tracking.
§ 90.249 - Control stations.
§ 90.250 - Meteor burst communications.
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