Thursday, April 12, 2012

How walkie talkie Begins


Donald Hings, pioneered one of the first Walkie-Talkies. In 1938 he was working for a mining company that deployed geologists to remote areas of western Canada to locate mineral deposits. Now, if there was a crash in the bush, pilots had no way of signalling their location. That year, he developed an effective, portable emergency voice radio. It could float, featured a folding antenna and its signal had a 130-mile range. The British Army was very impressed with these "radios" and as Mr. Hings continued his work to improve his invention, walkie talkies became invaluable war time tools. Canadian, Al Gross invented the walkie-talkie in 1938. Al Gross' device did not win FCC approval until 1958.
The first radio receiver/transmitter to be nicknamed "Walkie-Talkie" was thebackpacked Motorola SCR-300, created by an engineering team in 1940 at the Galvin Manufacturing Company (forerunner of Motorola). The team consisted of Dan Noble, who conceived of the design using FM technology, Henryk Magnuski who was the principal RF engineer, Bill Vogel, Lloyd Morris, and Marion Bond. Motorola produced the hand-held AM SCR-536 radio as well during the war. It was called the "Handie-Talkie" (HT).

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