47 C.F.R. § 90.1333 Restrictions on the operation of mobile and portable stations.
Title 47 - Telecommunication
(a) Mobile and portable stations may operate only if they can positively receive and decode an enabling signal transmitted by a base station. (b) Any mobile/portable stations may communicate with any other mobile/portable stations so long as each mobile/portable can positively receive and decode an enabling signal transmitted by a base station. (c) Airborne operations by mobile/portable stations is prohibited.
Title 47: Telecommunication
PART 90—PRIVATE LAND MOBILE RADIO SERVICES
Subpart Z—Wireless Broadband Services in the 3650–3700 MHz Band
§ 90.1333 Restrictions on the operation of mobile and portable stations.
