PT Radio Frequency Communication
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Radio-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… … Wikipedia
Radio Frequency Identification — Radio identification Une puce de radio identification EPC utilisée par Wal Mart La radio identification plus souvent désignée pa … Wikipédia en Français
Radio frequency identification — Radio identification Une puce de radio identification EPC utilisée par Wal Mart La radio identification plus souvent désignée pa … Wikipédia en Français
radio frequency — n any of the electromagnetic wave frequencies that lie in a range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used in radio and television transmission * * * (RF) the range of frequencies of… … Medical dictionary
Radio Frequency Identification — Die Neutralität dieses Artikels oder Abschnitts ist umstritten. Eine Begründung steht auf der Diskussionsseite. siehe: Abwahl Lesenswert Februar 2007 … Deutsch Wikipedia
Radio Frequency — WikiV Frequency at which coherent electromagnetic radiation of energy is useful for communication purposes. Also, the entire range of such frequencies … Audio and video glossary
radio-frequency spectrum — The classification of frequencies of electromagnetic radiation usable for communication purposes. See electromagnetic spectrum … Aviation dictionary
Amateur radio frequency allocations — Amateur radio frequency allocation is done by national telecommunications authorities. Globally, the ITU oversees how much radio spectrum is set aside for amateur radio transmissions. Radio amateurs use a variety of transmission modes, including… … Wikipedia
radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining … Universalium
Radio — 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… … Wikipedia
Communication with submarines — is difficult because radio waves do not travel well through thick electrical conductors like salt water. The obvious solution is to surface and raise an antenna above the water, then use ordinary radio transmissions. Early submarines had to… … Wikipedia
