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  2. List of Motorola products - Wikipedia

    en.wikipedia.org/wiki/List_of_Motorola_products

    This is a list of Motorola products. Motorola Mobility is an American subsidiary company of Chinese multinational technology company Lenovo that manufactures consumer electronics and telecommunications products.

  3. Continuous Tone-Coded Squelch System - Wikipedia

    en.wikipedia.org/wiki/Continuous_Tone-Coded...

    The most common set of supported tones is a set of 39 tones including all tones with Motorola PL codes, except for the tones 8Z, 9Z, and 0Z (zero-Z). [6] The lowest series has adjacent tones that are roughly in the harmonic ratio of 2 0.05 to 1 (≈1.035265), while the other two series have adjacent tones roughly in the ratio of 10 0.015 to 1 ...

  4. Walkie-talkie - Wikipedia

    en.wikipedia.org/wiki/Walkie-talkie

    The first handheld walkie-talkie was the AM SCR-536 transceiver from 1941, also made by Motorola, named the Handie-Talkie (HT). [9] The terms are often confused today, but the original walkie-talkie referred to the back mounted model, while the handie-talkie was the device which could be held entirely in the hand.

  5. 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.

  6. Motorola DynaTAC - Wikipedia

    en.wikipedia.org/wiki/Motorola_DynaTAC

    Electrical engineer Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994. The Motorola DynaTAC 8000X received approval from the U.S. FCC on September 21 ...

  7. Digital mobile radio - Wikipedia

    en.wikipedia.org/wiki/Digital_mobile_radio

    The Motorola ARC4 DMRA should by design provide at least 4 billion different IVs, so there should be 4 billion superframes with a different IV (2^32-bits possible IVs). But one user discovered that Motorola uses a non-primitive LFSR for the ARC4 to generate the IVs. The generator used x^32 + x^4 + x^2 + 1 is non-primitive and generates short ...