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2. 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. Mark and space tones are 1,200 Hz and 1,800 Hz.

3. Elmer H. Wavering - Wikipedia

   en.wikipedia.org/wiki/Elmer_H._Wavering

   There, Wavering and Lear together developed the first commercially successful car radio calling it the Motorola. Wavering and Galvin traveled around the country selling radios and teaching new dealers how to install them. In 1932, Paul Galvin selected Wavering to lead Motorola's car radio and police two-way communications businesses.

4. AN/PRC-153 - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-153

   AN/PRC-153. The AN/PRC-153 is the Joint Electronics Type Designation System designation for the US military version of the Motorola XTS-2500i secure handheld 2-way radio, known as the Integrated, Intra-Squad Radio (IISR) within the US Marine Corps. [1] Its intended purpose is squad-level communications during urban warfare.

5. Selective calling - Wikipedia

   en.wikipedia.org/wiki/Selective_calling

   Selective calling. In a conventional, analog two-way radio system, a standard radio has noise squelch or carrier squelch, which allows a radio to receive all transmissions. Selective calling is used to address a subset of all two-way radios on a single radio frequency channel. Where more than one user is on the same channel (co-channel users ...

6. CrunchGear Boooring Edition: MOTOTRBO 2-Way Radios

   techcrunch.com/2007/03/29/crunchgear-boooring...

   Today we have some, ah, stunning 2-way radios / walkie talkies from Motorola that are dubbed MOTOTRBO. These industrial-grade radios sport both an analog and digital band and have the ability the ...

7. Walkie-talkie - Wikipedia

   en.wikipedia.org/wiki/Walkie-talkie

   A walkie-talkie, more formally known as a handheld transceiver ( HT ), 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. First used for infantry, similar designs were ...