15.7.12

HOW DO YOU COMMUNICATE THROUGH A WALKIE-TALKIE?

            How about if old phones would be turned into an intercom for your tree house? Or maybe two cordless phones into a home base walkie talkie?

What Is A Walkie-Talkie?
       A walkie-talkie is a two-way radio transciever. It is hand-held and portable and was originally developed for use in the military. It's like a telephone unit with an antenna sticking out of the top. The disadvantage of using a walkie-talkie is that a lot of people can listen to the transmitted voice as opposed to a mobile phone...


How Does It Function?
        The sound transmission starts when the push-to-talk switch is presses. A typical walkie-talkie has a built-in speaker which can be heard by the user himself or herself and other people in the immediate vicinity of the user. Hand-held transceivers are used either to communicate between two walkie-talkie, vehicle-mounted stations or base stations. A walkie-talkie is limited to a few watts of power output and a small antenna. The actual size of the unit limits both the battery capacity and antenna size. Its communication range is typically short, not exceeding the line-of-sight distance or within closed buildings or underground.

MOTOROLA SRC-300

 What Initiated Manufacture?
         The first radia transmitter nicknamed as "Walkie-Talkie" was the Motorola SCR-300, which was created by an engineer team in 1940 at the Galvin Manufacturing Company. These Hand-held transmitters used frequences assigned for various services. They proved valuable for communication to police, emergency services, industrial and commercial users. Walkie-Talkies were also popular with some amateur radio operators, operating with an amateur radio license in several different frequency bands.



Trivia:-
  • Haldie Talkie became a trademark of Motorola Inc. in 1951. The abbreviation HT is commonly used to refer to portable handled ham radios.
  • A walkie-talkie is called "Talkie-walkie" in French..

10 comments:

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