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The Second World War (1939-1945) saw the military use of radio-telephony links. Hand-held radio transceivers have been available since the 1940s. Mobile telephones for automobiles became available from some telephone companies in the 1940s.
The Wireless Set No. 19 was a Second World War mobile radio transceiver designed for use by armoured troops of the British Army. First introduced in 1940, the No. 19 began to replace the pre-war Wireless Set No. 11. Two modified versions were introduced, Mk. II in 1941 and Mk. III in 1942.
World War II [b] or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war .
For instance cavalry, trenches, and World War I-era battleships were normal in 1940, but six years later, armies around the world had developed jet aircraft, ballistic missiles, and even atomic weapons in the case of the United States. World War II was the first war where military operations often targeted the research efforts of the enemy.
This is a timeline of events of World War II in 1939 from the start of the war on 1 September 1939. For events preceding September 1, 1939, see the timeline of events preceding World War II. Germany's invasion of Poland on 1 September 1939 brought many countries into the war. This event, and the declaration of war by France and Britain two days ...
This is a timeline of the events that stretched over the period of late World War II, its conclusion, legal aftermath, with the inclusion of the Cold War, from January 1945 to December 1991. January 1945
This page was last edited on 28 February 2022, at 14:58 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
During World War II, ... 525 MHz band, single channel voice or 800 character-per-second teletype. Range up to 50 km. Tripod mast or 11 m mast. Transmission power 0.15 ...