47 C.F.R. § 90.503 Eligibility.
Title 47 - Telecommunication
Those persons who are eligible to operate stations in services under this part on a regular basis are also eligible to obtain an authorization for developmental operation in those particular radio services.
Title 47: Telecommunication
PART 90—PRIVATE LAND MOBILE RADIO SERVICES
Subpart Q—Developmental Operation
§ 90.503 Eligibility.