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  2. HDcctv - Wikipedia

    en.wikipedia.org/wiki/HDcctv

    HDcctv (High Definition Closed Circuit Television) is an open industrial standard for transmitting uncompressed high-definition analog (AHD) or digital video over point-to-point coaxial cable links for video surveillance applications. [1] [2] [3] HDcctv uses the SMPTE HD-SDI protocol and can transmit 720p or 1080p video over at least 100 m of ...

  3. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    By 1963, CCTV was being used in Munich to monitor traffic. [17] Closed-circuit television was used as a form of pay-per-view theatre television for sports such as professional boxing and professional wrestling, and from 1964 through 1970, the Indianapolis 500 automobile race. Boxing telecasts were broadcast live to a select number of venues ...

  4. Utility pole - Wikipedia

    en.wikipedia.org/wiki/Utility_pole

    The cable linking the telephone exchange to local customers is a thick cable lashed to a thin supporting cable, containing hundreds of twisted pair subscriber lines. Each twisted pair line provides a single telephone circuit or local loop to a customer.

  5. Cable television - Wikipedia

    en.wikipedia.org/wiki/Cable_television

    A coaxial cable used to carry cable television onto subscribers' premises A set-top box, an electronic device which cable subscribers use to connect the cable signal to their television sets. Presented unit is a Cisco RNG200N for QAM digital cable television system used in North America.

  6. Armstrong Group of Companies - Wikipedia

    en.wikipedia.org/wiki/Armstrong_Group_of_Companies

    In 1963, Armstrong's first cable television customers were connected in Butler, Pennsylvania.These customers were provided with nine viewing channels. For the next 40+ years Armstrong continued to grow in western Pennsylvania and the surrounding states virtually uncontested for television service until the expansion of satellite service became more widespread.

  7. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    Several tons of bagged cement, about two minutes of output from a 10,000 ton per day cement kiln. Portland cement is the most common type of cement in general usage. It is a basic ingredient of concrete, mortar, and many plasters. [43]

  8. Coaxial cable - Wikipedia

    en.wikipedia.org/wiki/Coaxial_cable

    Coaxial cable, or coax (pronounced / ˈ k oʊ. æ k s /), is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material); many coaxial cables also have a protective outer sheath or jacket.

  9. Concrete mixer - Wikipedia

    en.wikipedia.org/wiki/Concrete_mixer

    Trucks weigh 9,100 to 14,000 kilograms (20,000 to 30,000 lb), and can carry roughly 20,000 kilograms (40,000 lb) of concrete although many varying sizes of mixer truck are currently in use. The most common truck capacity is 10 cubic yards (7.6 m 3). Most concrete mixers in the UK are limited to a speed of 90 kilometres per hour (56 mph).

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