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2. SCR-536 - Wikipedia

   en.wikipedia.org/wiki/SCR-536

   The SCR-536 is often considered the first of modern hand-held, self-contained, "handie talkie" transceivers (two-way radios). It was developed in 1940 by a team led by Don Mitchell, chief engineer for Galvin Manufacturing (now Motorola Solutions) and was the first true hand-held unit to see widespread use. [1] By July 1941, it was in mass ...

3. List of Motorola products - Wikipedia

   en.wikipedia.org/wiki/List_of_Motorola_products

   GP300 Portable Radio; GP340 Portable Radio; GP360/380 Portable Radio; GP68 Portable Radio; GP328/HT750 Portable Radio; GP338/339 Portable Radio; GM360/380 Mobile Radio; Visar Portable Radio; MT1000 Portable Radio; MT500 Portable Radio; HT1000 Portable Radio; MT2000 Portable Radio; MTS2000 Portable radio; DP/DM Series Portable/Mobile DMR Radio

4. Walkie-talkie - Wikipedia

   en.wikipedia.org/wiki/Walkie-talkie

   A walkie-talkie, more formally known as a handheld transceiver, HT, or handheld radio, is a hand-held, portable, two-way radio transceiver.Its development during the Second World War has been variously credited to Donald Hings, radio engineer Alfred J. Gross, Henryk Magnuski and engineering teams at Motorola.

5. MDC-1200 - Wikipedia

   en.wikipedia.org/wiki/MDC-1200

   MDC (Motorola Data Communications), also known as Stat-Alert, MDC-1200 and MDC-600, is a Motorola two-way radio low-speed data system using audio frequency shift keying, (AFSK). MDC-600 uses a 600 baud data rate. MDC-1200 uses a 1,200 baud data rate. Systems employ either one of the two baud rates.

6. SCR-300 - Wikipedia

   en.wikipedia.org/wiki/SCR-300

   Motorola SCR-300 circa 1940 The SCR-300 , designated AN/VRC-3 under the Joint Electronics Type Designation System , was a portable radio transceiver used by US Signal Corps in World War II . This backpack -mounted unit was the first radio to be nicknamed a " walkie talkie ".

7. Family Radio Service - Wikipedia

   en.wikipedia.org/wiki/Family_Radio_Service

   Motorola T5320 FRS handheld radio. The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band.