Advancing Communication: The History of Two Way Radios

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(No Transcript)
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• Senior Constable Frederick William Downie of the
  Victorian Police developed the first mobile
  two-way radio back in 1923, making Victorian
  police cars the first in the world to be equipped
  with wireless communication.

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• In 1939, Galvin Manufacturing Corporation (which
  would later become Motorola) developed a complete
  line of affordable AM two-way radio equipment.
  The companys aim was to make a system
  cost-effective enough so more public safety
  agencies could adopt the technology and improve
  service to their communities.

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• 1940 welcomed the introduction of the
  Handie-Talkie SCR536 AM portable two-way radio by
  Galvin Manufacturing Corporation. An icon of
  World War II, this handheld radio is still often
  what comes to mind when people think of the first
  portable two-way radio systems.

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• Weighing in at 35 pounds, the worlds first FM
  portable two-way radio was designed for the U.S.
  Army Signal Corps in 1943. This backpack-style
  walkie-talkie had a range of up to 20 miles.

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• With advancements in radio technology, Motorola
  began marketing portable two-way radios
  specifically designed for the industrial market
  in 1947. The private sector now had access to
  equipment to increase communication as well as
  safety on the job.

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• From government agencies to construction sites to
  retail storesfurther advancements in
  communication technology made two-way radios
  commonplace to the general working world.
• Pictured A grain inspector for the USDA using an
  RCA TacTec walkie-talkie in New Orleans, 1976.

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• In 1996, the U.S. authorized the Family Radio
  Service, an improved walkie-talkie radio system.
  This personal radio system is noted for using
  channelized frequencies around 462 and 467 MHz in
  the UHF band, which means it doesnt suffer from
  the interference effects like other systems,
  including the citizens band (CB), cordless
  telephones, and baby monitors.

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• Many of us today could not imagine doing our jobs
  without a two-way radio system. They are
  commonplace everywhere from restaurants to
  manufacturing plants to backstage at world-famous
  theatres. Two-way radios are also more advanced
  and affordable than ever before, as well as
  significantly more compact and durable.

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Two Way Radio Gear specializes in the latest and
greatest two-way radio technology for
construction sites, restaurants, property
managers, and more. For more information, visit
www.twowayradiogear.com.
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• http//www.motorolasolutions.com/en_us/about/compa
  ny-overview/history/timeline.html
• https//en.wikipedia.org/wiki/Family_Radio_Service
  
• https//en.wikipedia.org/wiki/Two-way_radio
• https//en.wikipedia.org/wiki/Walkie-talkie

Slide 4 By Unknown - M 11-235 manual. Scanned
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