---
kind: "section"
citation: "47 U.S.C. § 323"
title: "47"
title_heading: "Telecommunications"
number: "323"
heading: "Interference between Government and commercial stations"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/47/323"
units:
  - "Chapter 5 — Wire or Radio Communication"
  - "Subchapter III — Special Provisions Relating to Radio"
  - "Part I — General Provisions"
---

# §323. Interference between Government and commercial stations

- (a) At all places where Government and private or commercial [radio stations](/usc/47/153.md?p=42) on land operate in such close proximity that interference with the work of Government [stations](/usc/47/153.md?p=42) cannot be avoided when they are operating simultaneously, such private or commercial [stations](/usc/47/153.md?p=42) as do interfere with the transmission or reception of [radio communications](/usc/47/153.md?p=40) or signals by the Government [stations](/usc/47/153.md?p=42) concerned shall not use their transmitters during the first fifteen minutes of each hour, local standard time.
- (b) The Government [stations](/usc/47/153.md?p=42) for which the above-mentioned division of time is established shall transmit [radio communications](/usc/47/153.md?p=40) or signals only during the first fifteen minutes of each hour, local standard time, except in case of signals or [radio communications](/usc/47/153.md?p=40) relating to [vessels](/usc/47/153.md?p=46-A) in distress and [vessel](/usc/47/153.md?p=46-A) requests for information as to course, location, or compass direction.

## Source credit

(June 19, 1934, ch. 652, title III, § 323, 48 Stat. 1090.)