47 CFR § 90.351 - Location and Monitoring Service.
---
identifier: "/us/cfr/t47/s90.351"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 90.351 - Location and Monitoring Service."
title_number: 47
title_name: "Telecommunication"
section_number: "90.351"
section_name: "Location and Monitoring Service."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "D"
subchapter_name: "SAFETY AND SPECIAL RADIO SERVICES"
part_number: "90"
part_name: "PRIVATE LAND MOBILE RADIO SERVICES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "47 U.S.C. 154(i), 161, 303(g), 303(r), 332(c)(7), 1401-1473"
regulatory_source: "43 FR 54791, Nov. 22, 1978, unless otherwise noted."
cfr_part: "90"
---
# 90.351 Location and Monitoring Service.
These provisions authorize the licensing of systems in the Location and Monitoring Service (LMS). LMS systems utilize non-voice radio techniques to determine the location and status of mobile radio units. LMS licensees authorized to operate a system in the 902-928 MHz band may serve individuals, federal government agencies, and entities eligible for licensing in this part 90.
(a) [Reserved]
(b) LMS stations are exempted from the identification requirements of § 90.425; however, the Commission may impose automatic station identification requirements when determined to be necessary for monitoring and enforcement purposes.
[89 FR 100852, Dec. 13, 2024, as amended at 90 FR 57710, Dec. 12, 2025]