WALKIE-TALKIE (1938)

GROSS INTRODUCE THE HAND HELD TWO WAY RADIO.

A walkie talkie is a small portable radio through we can talk into and hear messages 

Walkie-talkie are the portable tow way radios that paved the way for mobile phones by showing the public the joy of talking to faraway people while walking around. In the world war II they allowed troops to communicate and, since then, the police, the coast guards, and even children playing games have used to relay information.

Their exact origins are rather hazy, though. Once radios had been invented, the next big thing was making them smaller and more portable and there is much disagreement over exactly when a two way radio became Walkie-talkie

In 1937 a man called Din Hings, born in England and raised in Canada, build a waterproof two way field radio. This radio weighed almost 12 pounds (5.5 kg) and was about the size of a toaster, but was definitely portable enough to count. Things radio was build for air crashes, so that survivor could guide in rescuers by transmitting to the manufacturer or the Canadian signal corps. Before this radio, most were portable only if someone carried it while another used it but hings could be carried and operated by one person.

Engineer Alfred j gross (1918-2000) made his own lighter, smaller version in 1938 while a still a teenager. His designs caught the attention of the U.S office of strategic services (now the CIA), who recruited him to design their radios. Gross's designs went on to play a large role in world war II and soon entered civilian use.

It was gross designs of wrist radio that found their way into Chester Gould's sick Tracy comics, but it was walkie talkies in general that have led to many development since.

a walkie talkie is a combined transmitter and receiver that is very light enough to carried by a person it is used in world war II. The main draw back of walkie talkie is that same frequency channel used for both the thing so only one person can talk at a time