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Very High Frequency - Frequency Modulation

См. также в других словарях:

  • Very High Frequency) — Bandes de fréquences de la télévision terrestre Les Bandes de fréquences de la télévision terrestre sont situées dans la bande de radiofréquences comprise entre 30 et 3000 MHz (longueur d onde de 10 à 0,1 m), regroupant les très hautes… …   Wikipédia en Français

  • Very low frequency — or VLF refers to radio frequencies (RF) in the range of 3 kHz to 30 kHz. Since there is not much bandwidth in this band of the radio spectrum, only the very simplest signals are used, such as for radio navigation. Also known as the myriameter… …   Wikipedia

  • Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… …   Wikipedia

  • High frequency active auroral research program — 62°23′30″N 145°09′00″O / 62.39167, 145.15 …   Wikipédia en Français

  • Very High Bitrate Digital Subscriber Line — VDSL or VHDSL (Very High Bitrate DSL) [ [http://www.kpn.com/artikel.htm?contentid=2895 KPN KPN starts VDSL trials] ] is a DSL technology providing faster data transmission over a single flat untwisted or twisted pair of copper wires. These fast… …   Wikipedia

  • Ultra high frequency — (UHF) designates a range (band) of electromagnetic waves with frequencies between 300 MHz and 3 GHz (3,000 MHz). Also known as the decimeter band or decimeter wave as the wavelengths range from ten to one decimeters. Radio waves with frequencies… …   Wikipedia

  • High bit rate Digital Subscriber Line — (HDSL) was the first DSL technology to use a higher frequency spectrum of copper, twisted pair cables. HDSL was developed in the USA, as a better technology for high speed, synchronous circuits typically used to interconnect local exchange… …   Wikipedia

  • Modulation — For musical change of key, see Modulation (music). For other uses, see Modulation (disambiguation). Passband modulation v · d · e …   Wikipedia

  • Very minimum-shift keying — VMSK, for Very Minimum Shift Keying modulation, is one of several digital modulation methods claimed to send high speed digital data through very low bandwidth (or narrowband) channels. A typical claim is a data rate of 6 Mbit/s in a bandwidth of …   Wikipedia

  • Frequency comb — A frequency comb is the graphic representation of the spectrum of a mode locked laser. An octave spanning comb can be used for mapping radio frequencies into the optical frequency range or it can be used to steer a piezoelectric mirror within a… …   Wikipedia

  • Frequency synthesizer — A frequency synthesizer is an electronic system for generating any of a range of frequencies from a single fixed timebase or oscillator. They are found in many modern devices, including radio receivers, mobile telephones, radiotelephones, walkie… …   Wikipedia

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