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  2. Motorola Minitor - Wikipedia

    en.wikipedia.org/wiki/Motorola_Minitor

    The Motorola Minitor is a portable, analog, receive only, voice pager typically carried by civil defense organizations such as fire, rescue, and EMS personnel (both volunteer and career) to alert of emergencies. The Minitor, slightly smaller than a pack of cigarettes, is carried on a person and usually left in selective call mode.

  3. List of Motorola products - Wikipedia

    en.wikipedia.org/wiki/List_of_Motorola_products

    Canopy – A line-of-sight wireless technology, primarily used by ISPs to provide broadband internet; MotoMESH – A mobile wireless broadband product providing proprietary "Mesh-Enabled Architecture" and standards-based 802.11 network access in both the unlicensed 2.4 GHz band and the licensed 4.9 GHz public-safety band

  4. Base transceiver station - Wikipedia

    en.wikipedia.org/wiki/Base_transceiver_station

    A base transceiver station (BTS) or a baseband unit [1] (BBU) is a piece of equipment that facilitates wireless communication between user equipment (UE) and a network. UEs are devices like mobile phones (handsets), WLL phones, computers with wireless Internet connectivity, or antennas mounted on buildings or telecommunication towers.

  5. Land mobile radio system - Wikipedia

    en.wikipedia.org/wiki/Land_mobile_radio_system

    Land mobile radio systems are widely used by the military. Separate bands in the radio spectrum are reserved for their use. This includes portions of the 30-50 MHz band, and the entire 100-100, 100-100.8, and 540-2400 MHz bands, plus shared use of the 170- 170 MHz band.

  6. Continuous Tone-Coded Squelch System - Wikipedia

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

    The end-of-transmission phase reversal (called "Reverse Burst" by Motorola (and trademarked by them) and "Squelch Tail Elimination" or "STE" by GE [8]) caused the reed to abruptly stop vibrating which would cause the receive audio to instantly mute. Initially, a phase shift of 180 degrees was used, but experience showed that a shift of ±120 to ...

  7. Baseband - Wikipedia

    en.wikipedia.org/wiki/Baseband

    A baseband channel or lowpass channel (or system, or network) is a communication channel that can transfer frequencies that are very near zero. [4] Examples are serial cables and local area networks (LANs), as opposed to passband channels such as radio frequency channels and passband filtered wires of the analog telephone network.

  8. Improved Mobile Telephone Service - Wikipedia

    en.wikipedia.org/wiki/Improved_Mobile_Telephone...

    The most common IMTS phone, the Motorola TLD-1100 series, used two circuit boards about 8 inches square, to perform the channel scanning and digit decoding process, and all logic was performed with discrete transistors. In a given city, one IMTS base station channel was "marked idle" by the transmission of a steady 2000 Hz "idle" tone.

  9. Advanced Mobile Phone System - Wikipedia

    en.wikipedia.org/wiki/Advanced_Mobile_Phone_System

    Each duplex channel was composed of 2 frequencies. 416 of these were in the 824–849 MHz range for transmissions from mobile stations to the base stations, paired with 416 frequencies in the 869–894 MHz range for transmissions from base stations to the mobile stations. Each cell site used a different subset of these channels than its ...