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  2. Nextel - Wikipedia

    en.wikipedia.org/wiki/NEXTEL

    Nextel provided digital, wireless communications services, originally focusing on the fleet and dispatch customers, but later marketed to all potential wireless customers. Nextel's network operated in the 800-MHz Specialized Mobile Radio band and used iDEN technology developed by Motorola. Nextel's iDEN network offered a then unique push-to ...

  3. Astro (Motorola) - Wikipedia

    en.wikipedia.org/wiki/Astro_(Motorola)

    The ASTRO 25 core is the hub for the communications network. It comprises P25 portable and mobile radios, dispatch consoles, data applications, and RF conventional or trunked sites. [16] In addition to ASTRO 25, Motorola also builds several other P25 radio models, including the APX family of radios, designed for first responders. [17]

  4. 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 ...

  5. Hillsdale County eyes millage for 800 MHz radio systems - AOL

    www.aol.com/news/county-eyes-millage-800-mhz...

    Hillsdale County eyes millage for 800 MHz radio systems. ... A committee tasked with looking into the proposal recommended the county go with a proposal by Motorola with support of the county’s ...

  6. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup ) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...

  7. iDEN - Wikipedia

    en.wikipedia.org/wiki/IDEN

    Wideband Integrated Digital Enhanced Network, or WiDEN, is a software upgrade developed by Motorola and partners for its iDEN enhanced specialized mobile radio (or ESMR) wireless telephony protocol. WiDEN allows compatible subscriber units to communicate across four 25 kHz channels combined, for up to 100 kbit/s of bandwidth.