Shortwave radio is used for broadcasting of voice and music to shortwave listeners over very large areas sometimes entire continents or beyond. Thus shortwave radio can be used for very long distance communication, in contrast to radio waves of higher frequency which travel in straight lines (line-of-sight propagation) and are limited by the visual horizon, about 40 miles (64 km). This is called skywave or "skip" propagation. Therefore, short waves directed at an angle into the sky can be reflected back to Earth at great distances, beyond the horizon.
What began as the Swiss Short Wave Service in 1935, would grow from. The first few decades of SRI’s existence were the heyday of shortwave it was often the only way of getting news directly from other countries. Radio waves in the shortwave band can be reflected or refracted from a layer of electrically charged atoms in the atmosphere called the ionosphere. The post from 2019 says: From the mid-1930s to 2004, Switzerland’s international service was Swiss Radio International (SRI). CH: Swiss Radio International: Swiss Broadcasting Corporation (SBC) inform Swiss. There is no official definition of the band, but the range always includes all of the high frequency band (HF), and generally extends from 1.7–30 MHz (176.3–10.0 m) from the high end of the medium frequency band (MF) just above the mediumwave AM broadcast band, to the end of the HF band. International broadcasters these sites represent international radio. Shortwave radio is radio transmission using shortwave radio frequencies. Audiences learned that international programming was available through shortwave bands that people could access on many consumer receivers. language broadcasting from Radio Canada, Radio France and Swiss Radio International. Propagation for Shortwave Radio (0 - 30 MHz) One of the biggest discoveries in my life was shortwave radio. Radio Sweden International Comment by jonno. There's still a few in there that I recognise, but can't name. Great stuff! Really tested my memory, thinking back to the 80's when I was an active SWL. 529 kc following the 1948 International Broadcasting Conference in Copenhagen. Radio Berlin International Comment by jonno. Switzerlands National Public Radio was founded in 1931 as an answer to. Swiss Radio International Comment by jonno. īBC World Service (non English / non Europe) Comment by jonno. Thanks Jonno I really enjoyed that - took me back to my misspent youth! I recognised a couple more stations: 0:23 is Deutschlandfunk, 1:21 is Radio Norway International and 2:37 is Radio Exterior de España (or "Spanish Foreign Radio" as they used to say in English.) Comment by jonno. RTE,Ireland Comment by Margret Satterwaite In 1935, the shortwave service (since 1978: Swiss Radio International. Others, such as the BBC World Service, have. Since the beginnings of the radio, programmes were designed to 'uplift' the. Several international broadcasters, such as Swiss Radio International, have abandoned shortwave broadcasting altogether, relying on Internet transmissions only. All material protected under copyright the applicable producer/broadcaster. An international broadcaster such as the BBC, Radio France International or Germany's Deutsche Welle, may use all the above methods. One of the first shortwave radio stations of its kind, it was aimed at the Swiss living abroad who wanted to. Many thanks to all who have contributed to this montage, including 'Volker400' for the recreations. The Swiss Shortwave Service as SRI was first known started broadcasting in 1935. Montage consisting of top of hour' Interval Signals/Identifications from various short wave/medium wave 'international' radio stations. SHORTWAVE EXPANSIONS AND CONTRACTIONS Swiss Radio International continued its planned obsolescence of shortwave, despite few hits at its Swissinfo website.
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