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  2. 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 ...

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...

  4. Track while scan - Wikipedia

    en.wikipedia.org/wiki/Track_while_scan

    Track while scan. Track-while-scan ( TWS) is a mode of radar operation in which the radar allocates part of its power to tracking a target or targets (up to forty with modern radar) while part of its power is allocated to scanning. It is similar to but functions differently in comparison to its counterparts range-while-search (RWS), long range ...

  5. What is WikiLeaks and why did it get Julian Assange in so ...

    www.aol.com/news/explainer-wikileaks-why-did...

    WHAT IS WIKILEAKS? On its website, WikiLeaks says it is a multinational media organisation that specialises in analysing and publishing databases of censored or otherwise restricted materials ...

  6. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    Unstructured Supplementary Service Data ( USSD ), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers. USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content ...

  7. Non-uniform memory access - Wikipedia

    en.wikipedia.org/wiki/Non-uniform_memory_access

    Non-uniform memory access. The motherboard of an HP Z820 workstation with two CPU sockets, each with their own set of eight DIMM slots surrounding the socket. Non-uniform memory access ( NUMA) is a computer memory design used in multiprocessing, where the memory access time depends on the memory location relative to the processor. Under NUMA, a ...

  8. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    the Q-code for: Atmospheric pressure at aerodrome elevation (or at runway threshold) QNE: the Q-code for pressure altitude: QNH: the Q-code for: Altimeter sub-scale setting to obtain elevation when on the ground, i.e. altitude above MSL: QRA quick reaction alert: QRH quick reference handbook: QTOL: quiet take-off and landing

  9. DuckDuckGo - Wikipedia

    en.wikipedia.org/wiki/DuckDuckGo

    History Early years DuckDuckGo was founded by Gabriel Weinberg and launched on February 29, 2008, in Valley Forge, Pennsylvania. Weinberg is an entrepreneur who previously launched Names Database, a now-defunct social network. Self-funded by Weinberg until October 2011, DuckDuckGo was then "backed by Union Square Ventures and a handful of angel investors." Union Square partner Brad Burnham ...