43 C.F.R. § 8365.2-2 Audio devices.
Title 43 - Public Lands: Interior
On developed recreation sites or areas, unless otherwise authorized, no person shall: (a) Operate or use any audio device such as a radio, television, musical instrument, or other noise producing device or motorized equipment in a manner that makes unreasonable noise that disturbs other visitors; (b) Operate or use a public address system; (c) Construct, erect or use an antenna or aerial for radiotelephone, radio or television equipment, other than on a vehicle or as an integral part of such equipment.
Title 43: Public Lands: Interior
PART 8360—VISITOR SERVICES
Subpart 8365—Rules of Conduct
§ 8365.2-2 Audio devices.
