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  2. Communication during the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/Communication_during_the...

    Following the attacks, the issues with the cell network weren't resolved until 36 cellular COWs (cell towers on wheels) were deployed by September 14, 2001, in Lower Manhattan to support the U.S. Federal Emergency Management Agency (FEMA) and provide critical phone service to rescue and recovery workers.

  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. Cellular frequencies in the United States - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies_in...

    To issue cellular licenses, the FCC divided the U.S. into 734 geographic markets called Cellular Market Areas (CMAs) and divided the 40 MHz of spectrum into two, 20 MHz amounts referred to as channel blocks; channel block A and channel block B. A single license for the A block and the B block were made available in each market.

  5. Motorola DynaTAC - Wikipedia

    en.wikipedia.org/wiki/Motorola_DynaTAC

    A DynaTAC 8000X; the first commercially available mobile phone from 1983. 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.

  6. Missed communications and blocked evacuation routes ... - AOL

    www.aol.com/missed-communications-blocked...

    Missed communications and blocked evacuation routes: New report details problems and heroism from Maui’s disastrous wildfires Holly Yan, CNN April 17, 2024 at 11:04 PM

  7. Motorola Mobility - Wikipedia

    en.wikipedia.org/wiki/Motorola_Mobility

    Motorola Trademark Holdings, LLC. Website. www .motorola .com. Motorola Mobility LLC, marketed as Motorola, is an American consumer electronics manufacturer primarily producing smartphones and other mobile devices running Android. Headquartered at Merchandise Mart in Chicago, Illinois, it is a subsidiary of the Chinese technology company Lenovo.

  8. List of mobile phone brands by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_phone...

    Germany. AEG. BenQ Mobile. Bankruptcy in 2006, defunct in 2007. Grundig Mobile. Hagenuk Telecom GmbH. insolvency in 1997, mobile phone development and manufacturing business acquired by Telital in 1998 [ 9] Siemens Mobile. Acquired by BenQ Corporation in 2005 to form BenQ Mobile.

  9. Cell site - Wikipedia

    en.wikipedia.org/wiki/Cell_site

    A cell site, cell phone tower, cell base tower, or cellular base station is a cellular -enabled mobile device site where antennas and electronic communications equipment are placed (typically on a radio mast, tower, or other raised structure) to create a cell, or adjacent cells, in a cellular network. The raised structure typically supports ...