allocation of frequencies

designação de freqüências

English-Portuguese dictionary of military terminology. 2014.

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  • Australasian television frequencies — Differences in Terrestrial TV frequencies= What led to the differences What are the important underlining circumstances that led to the different allocations? * Universally the VHF low band channels of (0), 1, 2, and 3 were allocated on an ad hoc …   Wikipedia

  • Frequency allocation — The electromagnetic spectrum is an aspect of the physical world which, like land, water, and air, is subject to usage limitations. Use of radio frequency bands of the electromagnetic spectrum is regulated by governments in most countries, in a… …   Wikipedia

  • Mobile Allocation Index Offset — A mobile allocation index offset (MAIO) refers a time delay separating traffic channels. When a GSM (Global System for Mobile Communications) mobile phone is served by a cell that is hopping over a set of frequencies, the separate traffic… …   Wikipedia

  • North American broadcast television frequencies — The North American broadcast television frequencies are on designated television channels numbered 2 through 69, approximately between 54 and 806 MHz. Traditionally, the frequencies are divided into two sections, the very high frequency (VHF)… …   Wikipedia

  • Television channel frequencies — The following tables show the frequencies assigned to broadcast television channels in various regions of the world, along with the ITU letter designator for the system used. The frequencies shown are for the video and audio carriers. The channel …   Wikipedia

  • Earth observation satellites transmission frequencies — The earth is constantly being monitored by a great number earth observation satellites. These artificial satellites have onboard sensors from which they gather data. The data is transmitted back to earth via radio frequency. This article lists a… …   Wikipedia

  • x-allocation — The first 126 paired DME (distance measuring equipment) interrogation frequencies (1–63, 64–126) …   Aviation dictionary

  • Terrestrial television — Air TV redirects here. For the anime, see Air (visual novel). Terrestrial television is a mode of television broadcasting which does not involve satellite transmission or cables typically using radio waves through transmitting and receiving… …   Wikipedia

  • Bandplan — A bandplan or band plan is a plan for utilizing a particular band of radio frequencies, that are a portion of the electromagnetic spectrum . Each bandplan defines the frequency range to be included, how channels are to be defined, and what will… …   Wikipedia

  • Gart Westerhout — Summary Biography Gart Westerhout (1927 ) is a Dutch astronomer. Well before completing his university studies at Leiden, he had already become well established internationally as a radio astronomer in The Netherlands, specializing in studies of… …   Wikipedia

  • Du Mont, Allen B. — ▪ American engineer and inventor in full  Allen Balcom Du Mont   born Jan. 29, 1901, Brooklyn, N.Y., U.S. died Nov. 15, 1965, New York, N.Y.       American engineer who perfected the first commercially practical cathode ray (cathode ray… …   Universalium

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