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The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication.
Band III is the name of the range of radio frequencies within the very high frequency (VHF) part of the electromagnetic spectrum from 174 to 240 megahertz (MHz). It is primarily used for radio and television broadcasting. It is also called high-band VHF, in contrast to Bands I and II.
Radio Electromagnetic Spectrum Frequency Bands. This chart shows the relative positions of the most common frequency bands, and is not to scale. ELF = Extremely Low Frequency. VF = Voice Frequency. VLF = Very Low Frequency. LF = Low Frequency. MF = Medium Frequency. HF = High Frequency. VHF = Very High Frequency. UHF = Ultra High Frequency.
Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1]
9 lip 2024 · Get the Radio Spectrum Chart. Key Frequency Bands. Very Low Frequency (VLF): 3 kHz to 30 kHz. Applications: Submarine communication, navigation systems; Low Frequency (LF): 30 kHz to 300 kHz. Applications: Maritime navigation, AM radio; Medium Frequency (MF): 300 kHz to 3 MHz. Applications: AM radio, maritime communication; High Frequency (HF ...
1 The International Table (columns 1- 3 of § 2.106) reflects Article 5, Section IV of the ITU Radio Regulations (Edition of 2016), except for the revisions listed below: Band; Table Action 2120-2170 MHz; Regions 1 & 3 The bands 2120-2160 and 2160-2170 MHz are combined.
5 sty 2023 · The National Telecommunications and Information Administration's Office of Spectrum Management manages the federal government’s use of the radio frequency spectrum. The Federal Government Spectrum Compendium contains information on federal spectrum uses from 225 MHz to 7.125 GHz.
