47 C.F.R. § 80.167 Limitations on operators.
Title 47 - Telecommunication
The operator of maritime radio equipment other than T–1, T–2, or G licensees, must not: (a) Make equipment adjustments which may affect transmitter operation; (b) Operate any transmitter which requires more than the use of simple external switches or manual frequency selection or transmitters whose frequency stability is not maintained by the transmitter itself.
Title 47: Telecommunication
PART 80—STATIONS IN THE MARITIME SERVICES
Subpart D—Operator Requirements
General Operator Requirements
§ 80.167 Limitations on operators.

