broadcast stations or systems or for changing transmitting equipment of an existing station will not be accepted unless the transmitters to be used have been certificated by the FCC pursuant to the provisions of this subpart, or have been certificated for licensing under Part 90 of the FCC rules and do not exceed the output power limits specified in § 74.461(b). * * * * * Section 74.452 is proposed to be revised to read as follows: § 74.452 Equipment changes. (a) Modifications may be made to an existing authorization in accordance with §§ 1.929 and 1.947 of this chapter. (b) All transmitters initially installed after November 30, 1977, must be certificated for use in this service or other service as
broadcast stations or systems or for changing transmitting equipment of an existing station will not be accepted unless the transmitters to be used have been certificated by the FCC pursuant to the provisions of this subpart, or have been certificated for licensing under Part 90 of the FCC rules and do not exceed the output power limits specified in § 74.461(b). * * * * * Section 74.452 is revised to read as follows: § 74.452 Equipment changes. (a) Modifications may be made to an existing authorization in accordance with §§ 1.929 and 1.947 of this chapter. (b) All transmitters initially installed after November 30, 1977, must be certificated for use in this service or other service as specified in §