A band is a small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose. Examples include: Legend: γ = Gamma rays HX = Hard X-rays SX = Soft X-Rays EUV = Extreme ultraviolet NUV = Near ultraviolet Visible light NIR = Near infrared MIR = Moderate infrared FIR = Far infrared Radio waves: EHF = Extremely high frequency (Microwaves) SHF = Super high frequency (Microwaves) UHF = Ultrahigh frequency VHF = Very high frequency HF = High frequency... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ... Channel, in communications (sometimes called communications channel), refers to the medium through which information is transmitted from a sender (or transmitter) to a receiver. ...

• AM broadcast band (530~1610kHz, to 1700 in the Americas)
• shortwave bands (5.9-26.1 MHz)
• citizens' band
• television stations 2-6 (54-88 MHz in the Americas)
• FM broadcast band (88~108 MHz, except 76~90 in Japan)
• aircraft band (108~136 MHz), for air traffic control
• television stations 7-13 (174~216 MHz in the Americas)
• L band (1452~1492 MHz) for digital radio (DAB) outside the US
• amateur radio bands among several different frequencies
• military bands

X-Band 8-10 GHz S-Band 1750-2400 MHz Mediumwave radio transmissions (sometimes called Medium frequency or MF) are those between the frequencies of 300 kHz and 3000 kHz. ... A kilohertz (kHz) is a unit of frequency equal to 1,000 hertz (1,000 cycles per second). ... World map showing the Americas The Americas commonly refers to the landmass in the Western Hemisphere consisting of the continents of North America, Central America and South America with their associated islands and regions. ... A Grundig Shortwave receiver Shortwave radio operates between the frequencies of 3,000 kHz and 30 MHz (30,000 kHz) and came to be referred to as such in the early days of radio because the wavelengths associated with this frequency range were shorter than those commonly in use at... Shortwave bands are frequency allocations for use within the high frequency radio spectrum. ... A typical mobile citizens band radio Citizens Band radio (CB) is, in the United States, a system of short distance radio communication between individuals on a selection of 40 channels within the single 27 MHz (11 meter) band. ... A television station is a type of broadcast station that broadcasts both audio and video to television receivers in a particular area. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A Japan Airlines Boeing 747-400. ... MegaHertz (MHz) is the name given to one million (106) Hertz, a measure of frequency. ... Air Traffic Control Towers (ATCTs) at Schiphol Airport Air Traffic Control (ATC) is a service provided by ground-based controllers who direct aircraft on the ground and in the air to ensure safe, orderly and expeditious traffic flow. ... L band (20-cm radar long-band) is a portion of the microwave band of the electromagnetic spectrum ranging roughly from 0. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Digital Audio Broadcast or DAB is a standard for digital radio broadcast developed by EUREKA as a research project for the European Union. ... Motto: E pluribus unum (1789 to 1956) (Latin: Out of Many, One) In God We Trust (1956 to present) Anthem: The Star-Spangled Banner Capital Washington, D.C. Largest city New York, New York Official language(s) None at federal level; English de facto Government • President  â€¢ Vice President Federal republic... Mrs. ...

• radionavigation beacons, such as LORAN and GPS

Each of these bands has a basic bandplan which dictates how it is to be used and shared, to avoid interference and to set protocol for the compatibility of transmitters and receivers. Radio navigation is the application of radio frequencies to determining a position on the earth. ... This page discusses Beacons, fires designed to attract attention. ... LORAN (LOng RAnge Navigation) is a terrestrial navigation system using low frequency radio transmitters that use the time interval between radio signals received from three or more stations to determine the position of a ship or aircraft. ... Over fifty GPS satellites such as this NAVSTAR have been launched since 1978. ... A bandplan or band plan is a plan for utilizing a particular band of radio frequencies, that are a portion of the Electromagnetic spectrum . ... Interference of two circular waves - Wavelength (decreasing bottom to top) and Wave centers distance (increasing to the right). ... In the field of telecommunications, a communications protocol is the set of standard rules for data representation, signalling, authentication, and error detection required to send information over a communications channel. ... The term compatibility has the following meanings: In telecommunication, the capability of two or more items or components of equipment or material to exist or function in the same system or environment without mutual interference. ... Antenna tower of Crystal Palace transmitter, London A transmitter (sometimes abbreviated XMTR) is an electronic device which with the aid of an antenna propagates an electromagnetic signal such as radio, television, or other telecommunications. ... In radio terminology, a receiver is an electronic device that receives a radio signal from an antenna and decodes the signal for use as sound, pictures, navigational-position information, etc. ...

Note that as a matter of physics, bands are divided at wavelengths of 10ⁿ metres, or frequencies of 3×10ⁿ hertz. For example, 30 MHz or 10 m divides shortwave (lower and longer) from VHF (shorter and higher). These are the parts of the radio spectrum, and not its frequency allocation. A Superconductor demonstrating the Meissner Effect Physics (from the Greek, φυσικός (physikos), natural, and φύσις (physis), nature) is the science of the natural world dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces. ... The wavelength is the distance between repeating units of a wave pattern. ... The metre (Commonwealth English) or meter (American English) (symbol: m) is the SI base unit of length. ... The hertz (symbol: Hz) is the SI unit of frequency. ... Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna. ... The electromagnetic spectrum is an aspect of the physical world, like land, water, and air. ...