Section 73.761 - Modification of transmission systemsSpecific authority, upon electronic filing of a formal application (FCC Form 309) therefor in the International Communications Filing System (ICFS), is required for any of the following changes:
(a) Change involving an increase or decrease in the power rating of the transmitters.(b) A replacement of the transmitters as a whole.(c) Change in the location of the transmitting antenna.(d) Change in the power delivered to the antenna.(e) Change in frequency control and/or modulation system.(f) Change in direction or gain of antenna system.(g) Other changes, not specified above in this section, may be made at any time without the authority of the Commission: Provided, That the Commission shall be immediately notified electronically in ICFS thereof and such changes shall be shown in the next application for renewal of license. 86 FR 54401 , Oct. 1, 2021, as amended at 88 FR 21447 , Apr. 10, 2023 82 FR 57882, 1/8/2018; 86 FR 54401, 10/1/2021; as amended at 88 FR 21447, 4/10/2023