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  2. Clearwire - Wikipedia

    en.wikipedia.org/wiki/Clearwire

    Clearwire's 4G service was branded as CLEAR, [23] except in those markets where the Clearwire name has already been established and where CLEAR service is not available. [24] CLEAR 4G was available in 35 of the country's 40 largest metropolitan statistical areas , covering 130 million people.

  3. 4G-LTE filter - Wikipedia

    en.wikipedia.org/wiki/4G-LTE_filter

    4G LTE is the fourth generation mobile phone standard. In urban areas, the 4G uses a frequency band located between 1800 MHz and 2600 MHz, and therefore is quite far from the TV band for causing any type of interference problem. In rural areas, however, the major operators asked to use part of the UHF band.

  4. Cellular frequencies in the United States - Wikipedia

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

    Professional wireless microphones used the 700 MHz band until 2010 when they were made illegal, but equipment still exists in use that may interfere with 3G and 4G technologies. [ 10 ] Due to immediate adjacency to channel 51 lower 700 MHz A block license holders were prohibited to use it within channel 51 station service areas.

  5. Very high frequency - Wikipedia

    en.wikipedia.org/wiki/Very_high_frequency

    For directional antennas, the Yagi antenna is the most widely used as a high gain or "beam" antenna. For television reception, the Yagi is used, as well as the log-periodic antenna due to its wider bandwidth. Helical and turnstile antennas are used for satellite communication since they employ circular polarization.

  6. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    The category of simple antennas consists of dipoles, monopoles, and loop antennas. Nearly all can be made with a single segment of wire (ignoring the break made in the wire for the feedline connection). [citation needed] Dipoles and monopoles called linear antennas (or straight wire antennas) since their radiating parts lie along a single ...

  7. GPS puck - Wikipedia

    en.wikipedia.org/wiki/GPS_puck

    It is a term for the antenna on GPS navigation devices, which receives GPS signals from GPS satellites. The early antennas were round, and thus had the appearance of a hockey puck . The GPS puck is commonly used in the boating electronic industry.

  8. History of smart antennas - Wikipedia

    en.wikipedia.org/wiki/History_of_smart_antennas

    The upgrade to digital radio technology in the mobile phone, indoor wireless network, and satellite broadcasting industries created new opportunities for smart antennas in the 1990s, culminating in the development of the MIMO (multiple-input multiple-output) technology used in 4G wireless networks.

  9. List of United States Coast Guard radio stations - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    Cutters normally identify themselves as "Cutter (name)". Boats identify themselves with the last digits of their registration number, for example, a Defender-class boat with the registration 25123 would be "Coast Guard 25123, while a 41-foot boat would be "Coast Guard 41345." Aircraft identify themselves by their number.

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