rotatable antenna

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• Antenna (radio) — Whip antenna on car …   Wikipedia

• 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

• Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …   Wikipedia

• ALLISS — Disambiguation * Financial Instruments: The Alliss Grant a US Financial Aid instrument, see [http://www.lsc.cc.mn.us/FinancialAid/allissGrant.cfm] [http://www.mnscu.edu/students/specialprograms/alliss.html] . * People: Peter Alliss (UK golfer and …   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

• Radio France Internationale — (RFI) was created in 1975 as part of Radio France by the Government of France to serve as a broadcast vehicle for French Equatorial Africa. In 1986 a new law passed by the French Parliament allowed RFI to operate independently of Radio France.RFI …   Wikipedia

• Shortwave relay station — A shortwave relay station typically consists of a transmitter building (or transmitter hall) and one or more HRS type antennas. Some relay stations (that operate at 100 kW or less) that only serve a local region (within 1500 km) may use Log… …   Wikipedia

• Shortwave — radio operates between the frequencies of 3,000 kHz (3.000 MHz) and 30,000 kHz (30.000 MHz) [ Tomislav Stimac, [http://www.vlf.it/frequency/bands.html Definition of frequency bands (VLF, ELF... etc.)] . IK1QFK Home Page (vlf.it).] and came to be… …   Wikipedia

• Shortwave radio — Shortwave can also refer to a shortwave trough meteorology. A solid state, analog shortwave receiver Shortwave radio refers to the upper MF (medium frequency) and all of the HF (high frequency) portion of the radio spectrum, between… …   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

• History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia