47 CFR § 80.1177 - Assignment and use of frequencies.

---
identifier: "/us/cfr/t47/s80.1177"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 80.1177 - Assignment and use of frequencies."
title_number: 47
title_name: "Telecommunication"
section_number: "80.1177"
section_name: "Assignment and use of frequencies."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "D"
subchapter_name: "SAFETY AND SPECIAL RADIO SERVICES"
part_number: "80"
part_name: "STATIONS IN THE MARITIME SERVICES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "47 U.S.C. 151-155, 301-609; 3 U.S.T. 3450, 3 U.S.T. 4726, 12 U.S.T. 2377."
regulatory_source: "51 FR 31213, Sept. 2, 1986, unless otherwise noted."
cfr_part: "80"
---


# 80.1177 Assignment and use of frequencies.

On-board frequencies are assignable only to ship stations. When an on-board repeater is used, paired frequencies must be used. On-board repeater frequencies must be used for single frequency simplex operations. On-board frequencies are listed in subpart H.