# 7.3: Frequency Allocations

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##### Learning Objectives
• An explanation and picture of the frequency allocation chart.

To prevent radio stations from transmitting signals “on top of each other,” the United States and other national governments in the 1930s began regulating the carrier frequencies and power outputs stations could use. With increased use of the radio spectrum for both public and private use, this regulation has become increasingly important. This is the so-called Frequency Allocation Chart, which shows what kinds of broadcasting can occur in which frequency bands. Detailed radio carrier frequency assignments are much too detailed to present here.

This page titled 7.3: Frequency Allocations is shared under a CC BY 1.0 license and was authored, remixed, and/or curated by Don H. Johnson via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.