47 CFR § 90.627 - Limitation on the number of frequency pairs that may be assignable for trunked systems and on the number of trunked systems.
---
identifier: "/us/cfr/t47/s90.627"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 90.627 - Limitation on the number of frequency pairs that may be assignable for trunked systems and on the number of trunked systems."
title_number: 47
title_name: "Telecommunication"
section_number: "90.627"
section_name: "Limitation on the number of frequency pairs that may be assignable for trunked systems and on the number of trunked systems."
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: "2026-03-24"
last_updated: "2026-03-24"
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"
---
# 90.627 Limitation on the number of frequency pairs that may be assignable for trunked systems and on the number of trunked systems.
(a) The maximum number of frequency pairs that may be assigned at any one time for the operation of a trunked radio system is twenty, except as specified in § 90.621(a)(1)(iv).
(b) [Reserved]
[47 FR 41032, Sept. 16, 1982, as amended at 48 FR 44559, Sept. 29, 1983; 48 FR 51929, Nov. 15, 1983; 49 FR 36377, Sept. 17, 1984; 51 FR 37404, Oct. 22, 1986; 53 FR 12157, Apr. 13, 1988; 58 FR 44963, Aug. 25, 1993; 59 FR 59966, Nov. 21, 1994; 90 FR 57711, Dec. 12, 2025]