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directivity relay

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  • 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

  • Horn antenna — Pyramidal microwave horn antenna, with a bandwidth of 0.8 to 18 GHz. A coaxial cable feedline attaches to the connector visible at top. This type is called a ridged horn; the curving fins visible inside the mouth of the horn increase the antenna… …   Wikipedia

  • Voice of Russia — For the blues rock band, see Radio Moscow (band). Russian State Radio Company Voice of Russia Type Radio network …   Wikipedia

  • Dipole antenna — A schematic of a half wave dipole antenna connected to an unbalanced coaxial cable. Better practice is to connect the balanced dipole to the unbalanced line with a balun. A dipole antenna is a radio antenna that can be made of a simple wire, with …   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

  • Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …   Wikipedia

  • State Administration of Radio, Film, and Television — The State Administration of Radio, Film, and Television (SARFT; Chinese: 国家广播电影电视总局; pinyin: Guójiā Guǎngbō Diànyǐng Diànshì Zǒngjú) is an executive branch under the State Council of the People s Republic of China. Its main task is the… …   Wikipedia

  • Russian opera — A Russian Warrior, Bilibin s costume design for Borodin s Prince Igor , 1930) Russian opera (Russian: Русская опера) is the art of opera in Russia. Operas by composers of Russian origin, written or staged outside of Russia, also belong to this… …   Wikipedia

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