- directional radio propagation
- Военный термин: направленное радиоизлучение
Универсальный англо-русский словарь. Академик.ру. 2011.
directional radio propagation
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Radio propagation beacon — A radio propagation beacon is a radio beacon, whose purpose is the investigation of the propagation of radio signals. Most radio propagation beacons use amateur radio frequencies. They can be found on HF, VHF, UHF, and microwave frequencies.… … Wikipedia
List of radio propagation topics — This is a list of radio propagation terms. NOTOC A a index A index aa index active prominence active prominence region (APR) active region active surge region (ASR) active dark filament (ADF) AE index Air Force Geophysics Laboratory (AFGL) arch… … Wikipedia
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
Directional antenna — Log periodic dipole array A directional antenna or beam antenna is an antenna which radiates greater power in one or more directions allowing for increased performance on transmit and receive and reduced interference from unwanted sources.… … Wikipedia
Radio jamming — is the (usually deliberate) transmission of radio signals that disrupt communications by decreasing the signal to noise ratio. Unintentional jamming occurs when an operator transmits on a busy frequency without checking that it is in use first,… … 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 direction finder — Civil Air Patrol members practice using a handheld radio direction finder to locate an emergency locator transmitter … Wikipedia
Vatican Radio — Infobox Radio Station name=Vatican Radio Radio Vaticana area = airdate = 1931 frequency = format = News, religious celebrations, in depth programs, and music owner = flagcountry|Vatican City website = [http://www.radiovaticana.org/inglese/enindex … Wikipedia
Citizens' band radio — Typical 1980s CB base station, used with outdoor antenna. This radio may also be used in an automobile, since it is powered by 13.8V DC. Shown with Astatic Power D 104 desk mic … Wikipedia
National Radio Astronomy Observatory — (NRAO) Logo of the National Radio Astronomy Observatory (NRAO) Formation 17 November 1956 [1] Purpose/focus To provide a full range of radio telescope facil … Wikipedia
Antenna (radio) — Whip antenna on car … Wikipedia
