History of amateur radio
Throughout the history of amateur radio, amateur radio enthusiasts have made significant contributions to science, engineering, industry, and social services. Research by amateur radio operators has f...
History of amateur radio - Wikipedia
Radio Act of 1912
The Radio Act of 1912 (37 Stat. 302) is a United States federal law that mandated that all radio stations in the United States be licensed by the federal government, as well as mandating tha...
Congress Radio
Congress Radio was a clandestine and underground radio station, which operated for about three months during the Quit India Movement of 1942, a movement launched by Gandhi against the British Raj for...
War Emergency Radio Service
The War Emergency Radio Service (WERS) was a precursor to the civil defense and Radio Amateur Civil Emergency Service systems in the United States. At the start of the Second World War the United Stat...
1913 London International Radiotelegraphic Convention
The International Radiotelegraph Convention (1912) established international callsigns, replacing the three letter callsigns prevalent then. Major world powers were given single prefixes such as N/K/W...
Sputnik (rocket)
The Sputnik rocket was an unmanned orbital carrier rocket designed by Sergey Korolyov, derived from the R-7 Semyorka ICBM. On 4 October 1957, it was used to perform the world's first satellite launch,...
CQD
CQD, transmitted in Morse code as  – · – ·    – – · –    – · ·  is one of the first distress signals adopted f...
Russian Woodpecker
Duga-3 Russian: Дуга-3 (NATO reporting name Steel Yard) was a Soviet over-the-horizon (OTH) radar system used as part of the Soviet ABM early-warning network. The system operated from July 1976 to...
Communication during the September 11 attacks
Communication problems and successes played an important role in the September 11, 2001 attacks and their aftermath. Systems were variously destroyed or overwhelmed by loads greater than they were des...
Communication during the September 11 attacks - Wikipedia
Sputnik 1
Listeners were both thrilled and terrified to hear Sputnik's steady beep.Sputnik 1 (Russian: "Спу́тник-1" [ˈsputnʲɪk], "Satellite-1", ПС-1 (PS-1, i.e. "Простейший Спутник-1", or Elementary Sate...
Cambridge University Wireless Society
The Cambridge University Wireless Society (CUWS) is the amateur radio club of the University of Cambridge, England.CUWS is one of the oldest still active radio clubs in the United Kingdom. It was foun...
North Sea flood of 1953
The 1953 North Sea flood (Dutch: Watersnoodramp, literally "flood disaster") was a major flood caused by a heavy storm, that occurred on the night of Saturday, 31 January 1953 and morning of Sunda...
North Sea flood of 1953 - Wikipedia
R-7 Semyorka
The R-7 (Russian: Р-7 «Семёрка») was a Soviet missile developed during the Cold War, and the world's first intercontinental ballistic missile. The R-7 made 28 launches between 1957 and 1961, but ...
Kettering Grammar School
Kettering Grammar School was a boys grammar school (selective) that had a number of homes in Kettering, Northamptonshire throughout its history.
One of its early seats was a small building on Gol...