The United States Frequency Allocations: The Radio Spectrum Chart was updated in September 2025, using data as of March 2025. The United States Frequency Allocation Chart is provided here as a …

The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the …

This chart represents a graphic single-point-in-time portrayal of the Table of Frequency Allocations used in the United States

Information about the US Amateur Bands is available on the Frequency Allocations page as well as the frequency bands chart. Download and print PDF documents using Adobe Reader or your Web …

This Online Table of Frequency Allocations may display amendments that have been adopted by the FCC but that have not yet taken effect. NOTE: If a Rule Part is listed in the last column of the …

Nov 5, 2013 · Astronomer's Toolbox Wavelength, Frequency, and Energy Regions of the Electromagnetic Spectrum Listed below are the approximate wavelength, frequency, and energy …

Jun 19, 2025 · The National Telecommunications and Information Administration 's Office of Spectrum Management manages the federal government’s use of the radio frequency spectrum. The Federal …

This chart represents the portion of the electronic spectrum that includes frequencies used for broadcast transmission. EHF = extremely high frequency; SHF = super high frequency; UHF = ultra high …

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 KHz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in …

Standard 30.0 FIXED MOBILE Frequency and SATELLITE SATELLITE Time Signal Satellite (S-E) 31.0 (E-S) (E-S) Stand. Frequency and Time Signal FIXED MOBILE Satellite (S-E) 31.3 RADIO SPACE …