directive beam

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• directive antenna — kryptinė antena statusas T sritis fizika atitikmenys: angl. directional antenna; directional beam aerial; directive antenna vok. Richtantenne, f; Richtstrahlantenne, f; Richtungsantenne, f rus. направленная антенна, f pranc. antenne… …   Fizikos terminų žodynas

• Prime Directive (Star Trek novel) — Infobox Book | name = Prime Directive title orig = translator = image caption = author = Judith Reeves Stevens, Garfield Reeves Stevens illustrator = cover artist = country = United States language = English series = Pocket TOS subject = genre =… …   Wikipedia

• directional beam aerial — kryptinė antena statusas T sritis fizika atitikmenys: angl. directional antenna; directional beam aerial; directive antenna vok. Richtantenne, f; Richtstrahlantenne, f; Richtungsantenne, f rus. направленная антенна, f pranc. antenne… …   Fizikos terminų žodynas

• HRS antenna — HRS type antennas are more or less the standard antenna used for long distance high power shortwave broadcasting (> 1000 km). Contents 1 History of HRS design 2 Nomenclature 3 A versatile antenna type …   Wikipedia

• HRS type antennas — are more or less the standard antenna used for long distance high power shortwave broadcasting (> 1000 km). History of HRS design HRS antennas were discovered during the 1920s, and as such were not originally intended for voice and music… …   Wikipedia

• Long range acoustic device — The long range acoustic device (LRAD) is a crowd control and hailing device developed by American Technology Corporation.According to the manufacturer s specifications, the equipment weighs 45 pounds (20 kg) and can emit sound in a 30° beam (only …   Wikipedia

• Radar sensor — Radio detection and ranging (radar) is used to sense angle, range and velocity of (moving) scatterers in the environment [Skolnik, M. I.: Introduction to Radar Systems, 3rd Ed. . McGraw Hill, 2005] [Stimson, G. W.: Introduction to Airborne Radar …   Wikipedia

• The Blitz — London Blitz redirects here. For the London based American football team, see London Blitz (American football). For other uses, see Blitz (disambiguation). The Blitz Part of Second World War, Home Front …   Wikipedia

• Directivity — Diagram showing directivity In electromagnetics, directivity is a figure of merit for an antenna. It measures the power density the antenna radiates in the direction of its strongest emission, versus the power density radiated by an ideal… …   Wikipedia

• Brevity code — Contents 1 American/NATO codes 1.1 A 1.2 B 1.3 C …   Wikipedia

• Daytime running lamp — A daytime running lamp (DRL, also daylight running lamp or daytime running light) is an automotive lighting device on the front of a roadgoing motor vehicle, installed in pairs, automatically switched on when the vehicle is moving forward,… …   Wikipedia