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  2. Motorola Minitor - Wikipedia

    en.wikipedia.org/wiki/Motorola_Minitor

    Older Minitor pagers (both the Minitor I and Minitor II series) have tone reeds or filters that are tuned to a specific audible tone frequency, and must physically be replaced if alert tones are changed. For two-tone sequential paging, there are two reeds, the first tone passes through the first reed, and the second tone passes through the ...

  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. Plectron - Wikipedia

    en.wikipedia.org/wiki/Plectron

    It would only sound when a correct pair of tones were broadcast - allowing many agencies (with different tones) to share the same frequency. Some Plectron Models had a set of "Built-in Re-chargeable Batteries", making the Plectron Portable. The Motorola MINITOR pager also uses this function and has largely replaced the Plectron.

  5. Selective calling - Wikipedia

    en.wikipedia.org/wiki/Selective_calling

    The default or standard five Motorola tones used for single tone format as of the 1980s: 1,350 Hz, 1,500 Hz, 1,650 Hz, 1,800 Hz, 1,950 Hz. These were identified in system documentation for a number of remote control equipment models as well as sales brochures for Motorola Syntor and Micor mobile radio Systems 90 accessories.

  6. Motorola Type II - Wikipedia

    en.wikipedia.org/wiki/Motorola_Type_II

    Motorola Type II refers to the second generation Motorola trunked radio systems that replaced fleets and subfleets with the concept of talkgroups and individual radio IDs. [1] [2] There are no dependencies on fleetmaps, therefore there are no limitations on how many radio IDs can participate on a talkgroup. This allows for greater flexibility ...

  7. Pager - Wikipedia

    en.wikipedia.org/wiki/Pager

    The U.S. paging industry generated $2.1 billion in revenue in 2008, down from $6.2 billion in 2003. [23] In Canada, 161,500 Canadians paid $18.5 million for pager service in 2013. Telus , one of the three major mobile carriers, announced the end to its Canadian pager service as of 31 March 2015, but rivals Bell , Rogers and PageNet intend to ...

  8. 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 ...

  9. List of Motorola products - Wikipedia

    en.wikipedia.org/wiki/List_of_Motorola_products

    HotZone Duo – Meshed wireless broadband networking product supporting both 2.4 GHz 802.11b/g and 5.8 GHz 802.11a standards. The system supports 802.11e for quality of service management, and is planned to support the 802.11s standard for mesh networking once that standard is finalized

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