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  2. Rakon - Wikipedia

    en.wikipedia.org/wiki/Rakon

    Rakon Limited is a technology company founded in 1967 that designs and manufactures frequency control products, primarily quartz crystals and temperature-compensated crystal oscillators ( TCXO ), [1] oven controlled crystal oscillators ( OCXO) and voltage controlled crystal oscillators ( VCXO ). [2] Its head office is in Auckland, New Zealand ...

  3. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/wiki/1951_USAF_resolution_test...

    A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...

  4. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...

  5. Raycom Sports - Wikipedia

    en.wikipedia.org/wiki/Raycom_Sports

    Raycom Sports is a Charlotte, North Carolina –based producer of sports television programs owned by Gray Television . It was founded in 1979 by husband and wife, Rick and Dee Ray. In the 1980s, Raycom Sports established a prominent joint venture with Jefferson-Pilot Communications which made them partners on the main Atlantic Coast Conference ...

  6. Flying is getting scary. But is it still safe? - AOL

    www.aol.com/flying-getting-scary-still-safe...

    Loaded 0%. Reports of harrowing and sometimes tragic incidents aboard airplanes seem to have accelerated this year, leading many to wonder if it’s still safe to fly. Statistics suggest that ...

  7. Arrayed waveguide grating - Wikipedia

    en.wikipedia.org/wiki/Arrayed_waveguide_grating

    Arrayed waveguide grating. Arrayed waveguide gratings ( AWG) are commonly used as optical (de)multiplexers in wavelength division multiplexed (WDM) systems. These devices are capable of multiplexing many wavelengths into a single optical fiber, thereby increasing the transmission capacity of optical networks considerably. [1]

  8. AN/URC-117 Ground Wave Emergency Network - Wikipedia

    en.wikipedia.org/wiki/AN/URC-117_Ground_Wave...

    AN/URC-117 was the system's Joint Electronics Type Designation System identifier, which signified various radio components installed in different locations. [4] Each GWEN Relay Node site featured a longwave transmitting tower, generally between 290 and 299 feet (88 and 91 m) tall, and emitting an RF output of between 2,000 and 3,000 watts.

  9. Singapore Airlines jet endured huge swings in gravitational ...

    www.aol.com/news/gravitational-changes-178-feet...

    The Singapore Airlines jetliner that hit severe turbulence last week went through huge swings in gravitational force in less than five seconds, likely causing the injuries to people who weren't ...

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