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Radio navigation played an important role during war time, especially in World War II. Before the discovery of the crystal oscillator, radio navigation had many limits. [73] However, as radio technology expanding, navigation is easier to use, and it provides a better position.
Again during World War II, as it had done during the first World War, the United States Congress suspended all amateur radio operations. [9] With most of the American amateur radio operators in the armed forces at this time, the US government created the War Emergency Radio Service which would remain active through 1945.
After World War II: The FM radio broadcast was introduced in Germany. 1948: A new wavelength plan was set up for Europe at a meeting in Copenhagen. Because of the recent war, Germany (which was not even invited) was only given a few medium-wave frequencies, which are not very good for broadcasting.
However, initial growth was slowed by industrial restrictions in effect during World War II. An additional complicating factor was the concern by the FCC that the assigned frequencies were prone to occasional interference caused by atmospheric conditions, especially during periods of high solar activity.
[2] [3] [4] In early 1916 the Marconi Company (England) started production of air-to-ground radio transmitters/receivers which were used in the war over France. In 1917 AT&T invented the first American air-to-ground radio transmitter. They tested this device at Langley Field in Virginia and found it was a viable technology. [5]
World War II propaganda radio stations (11 P) Pages in category "Radio during World War II" The following 49 pages are in this category, out of 49 total.
1942, clockwise from top left: British artillery barrage opens the Battle of El Alamein; the Jews of Salonika are rounded up for deportation to extermination camps; Soviet troops of the Great Patriotic War fight the Battle of Stalingrad; USS Lexington (CV-2) under fire at the Battle of the Coral Sea; Reinhard Heydrich's car after attack by Czech resistance; 5th SS Panzer Division Wiking troops ...
Gee, sometimes written GEE, [a] was a radio-navigation system used by the Royal Air Force during World War II. It measured the time delay between two radio signals to produce a fix , with accuracy on the order of a few hundred metres at ranges up to about 350 miles (560 km).