47 CFR § 95.393 - Instructions and warnings.
---
identifier: "/us/cfr/t47/s95.393"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 95.393 - Instructions and warnings."
title_number: 47
title_name: "Telecommunication"
section_number: "95.393"
section_name: "Instructions and warnings."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "D"
subchapter_name: "SAFETY AND SPECIAL RADIO SERVICES"
part_number: "95"
part_name: "PERSONAL 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, 303, 307."
regulatory_source: "82 FR 41104, Aug. 29, 2017, unless otherwise noted."
cfr_part: "95"
---
# 95.393 Instructions and warnings.
(a) A user's instruction manual must be supplied with each transmitter that can be used in a Personal Radio Service.
(b) The manual described in paragraph (a) of this section must contain all information necessary for the proper installation and operation of the transmitter including:
(1) Instructions concerning all controls, adjustments and switches that may be operated or adjusted without resulting in a violation of FCC rules;
(2) Warnings concerning any adjustment that could result in a violation of FCC rules or that is recommended to be performed only by or under the immediate supervision and responsibility of a person certified as technically qualified to perform transmitter maintenance and repair duties in the relevant radio service by an organization or committee representative of users of that service;
(3) Warnings concerning the replacement of any transmitter component (crystal, semiconductor, etc.) that could result in a violation of FCC rules; and
(4) For a transmitter that can only be operated with an FCC license, warnings concerning compliance with applicable licensing requirements and information concerning license application procedures.