47 CFR § 25.289 - Protection of GSO networks by NGSO systems.

---
identifier: "/us/cfr/t47/s25.289"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 25.289 - Protection of GSO networks by NGSO systems."
title_number: 47
title_name: "Telecommunication"
section_number: "25.289"
section_name: "Protection of GSO networks by NGSO systems."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "B"
subchapter_name: "COMMON CARRIER SERVICES"
part_number: "25"
part_name: "SATELLITE COMMUNICATIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "47 U.S.C. 154, 301, 302, 303, 307, 309, 310, 319, 332, 605, and 721, unless otherwise noted."
cfr_part: "25"
---


# 25.289 Protection of GSO networks by NGSO systems.

Unless otherwise provided in this chapter, an NGSO system licensee must not cause unacceptable interference to, or claim protection from, a GSO FSS or GSO BSS network. An NGSO FSS licensee operating in compliance with the applicable equivalent power flux-density limits in Article 22, Section II of the ITU Radio Regulations (incorporated by reference, § 25.108) will be considered as having fulfilled this obligation with respect to any GSO network.

[82 FR 59986, Dec. 18, 2017]