communications radio
1Automatisation des communications radio-électriques opérationnelles de la police — ACROPOL Pour les articles homonymes, voir Acropole (homonymie). ACROPOL est le système de communications radio de la Police nationale française depuis 1994. Sommaire 1 Définition 2 Fonctionnement …
2Radio receiver design — is a complex topic which can be broken down into a series of smaller topics. A radio communication system requires two tuned circuits each at the transmitter and receiver, all four tuned to the same frequency. [Cheney, M., Uth, R., Glenn, J.… …
3Radio communications during the September 11 attacks — This article reviews some of the details of radio communications at the September 11, 2001 World Trade Center attacks. [The purpose of revealing the operational details in this article is to allow operators of other communications networks and… …
4Radio-amateur — Radioamateur Pour les articles homonymes, voir Radio. Le shack ou station d un opérateur radioamateur …
5Radio-amateurisme — Radioamateur Pour les articles homonymes, voir Radio. Le shack ou station d un opérateur radioamateur …
6Radio amateur — Radioamateur Pour les articles homonymes, voir Radio. Le shack ou station d un opérateur radioamateur …
7Radio Amateur Civil Emergency Service — infobox Organization name = Radio Amateur Civil Emergency Service image border = size = 169px caption = msize = mcaption = abbreviation = RACES motto = Emergency Communications Through Radio Amateur Operators formation = 1952 extinction = type =… …
8Radio en Égypte — La Radio en Égypte serait composée en 2008 de 42 radios en AM, 22 en FM et une en ondes courtes[1]. Sommaire 1 Histoire 2 Paysage radiophonique 2.1 Radios d Etat …
9Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …
10Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …