---
kind: "section"
citation: "47 C.F.R. § 25.138"
title: "47"
number: "25.138"
heading: "Earth Stations in the 3.7-4.2 GHz band."
url: "https://uscodex.org/cfr/47/25.138"
---

# §25.138. Earth Stations in the 3.7-4.2 GHz band.

- (a) Applications for new, modified, or renewed earth station licenses and registrations in the 3.7-4.0 GHz portion of the band in CONUS are no longer accepted.
- (b) Applications for new earth station licenses or registrations within CONUS in the 4.0-4.2 GHz portion of the band will not be accepted until the transition is completed and upon announcement by the Space Bureau via Public Notice that applications may be filed.
- (c) Fixed and temporary fixed earth stations operating in the 3.7-4.0 GHz portion of the band within CONUS will be protected from interference by licensees in the 3.7 GHz Service subject to the deadlines set forth in [§ 27.1412](/cfr/47/27.1412.md) of this chapter and are eligible for transition into the 4.0-4.2 GHz band so long as they:
  - (1) Were operational as of April 19, 2018 and continue to be operational;
  - (2) Were licensed or registered (or had a pending application for license or registration) in the ICFS database on November 7, 2018; and
  - (3) **Timely certified the accuracy of the information on file with the Commission by May 28, 2019.**
- (d) Fixed and temporary earth station licenses and registrations that meet the criteria in [paragraph (c)](#c) of this section may be renewed or modified to maintain operations in the 4.0-4.2 GHz band.
- (e) Applications for new, modified, or renewed licenses and registrations for earth stations outside CONUS operating in the 3.7-4.2 GHz band will continue to be accepted.

## Notes

### Amendments

[85 FR 22864, Apr. 23, 2020, as amended at 88 FR 21440, Apr. 10, 2023]

### Source

Source: 56 FR 24016, May 28, 1991, unless otherwise noted.

### Authority

Authority: 47 U.S.C. 154, 301, 302, 303, 307, 309, 310, 319, 332, 605, and 721, unless otherwise noted.

### Amendments

[85 FR 22864, Apr. 23, 2020, as amended at 88 FR 21440, Apr. 10, 2023]