---
kind: "section"
citation: "47 C.F.R. § 73.761"
title: "47"
number: "73.761"
heading: "Modification of transmission systems."
url: "https://uscodex.org/cfr/47/73.761"
---

# §73.761. Modification of transmission systems.


Specific 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.

## Notes

### Amendments

[86 FR 54401, Oct. 1, 2021, as amended at 88 FR 21447, Apr. 10, 2023]

### Authority

Authority: 47 U.S.C. 154, 155, 301, 303, 307, 309, 310, 334, 336, 339.

### Amendments

[86 FR 54401, Oct. 1, 2021, as amended at 88 FR 21447, Apr. 10, 2023]