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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...

  3. List of Internet top-level domains - Wikipedia

    en.wikipedia.org/wiki/List_of_Internet_top-level...

    As of 20 May 2017, there were 255 country-code top-level domains, purely in the Latin alphabet, using two-character codes. As of June 2022 [update] , the number was 316, with the addition of internationalized domains.

  4. List of aircraft registration prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_aircraft...

    D-AUAA to D-AZZZ (test registrations) for aircraft manufactured by Airbus at Finkenwerder. D-BAAA to D-BZZZ for aircraft with 14–20 t MTOW. D-CAAA to D-CZZZ for aircraft with 5.7–14 t MTOW. D-EAAA to D-EZZZ for single-engine aircraft up to 2 t MTOW. D-FAAA to D-FZZZ for single-engine aircraft from to 2–5.7 t MTOW.

  5. Universal Product Code - Wikipedia

    en.wikipedia.org/wiki/Universal_Product_Code

    A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

  6. Generic Product Identifier - Wikipedia

    en.wikipedia.org/wiki/Generic_Product_Identifier

    Generic Product Identifier. The Generic Product Identifier ( GPI) is a 14-character hierarchical classification system created by Wolters Kluwer's Medi-Span that identifies drugs from their primary therapeutic use down to the unique interchangeable product regardless of manufacturer or package size. The code consists of seven subsets, each ...

  7. Standard Carrier Alpha Code - Wikipedia

    en.wikipedia.org/wiki/Standard_Carrier_Alpha_Code

    Standard Carrier Alpha Code. The Standard Carrier Alpha Code ( SCAC) is a privately controlled US code used to identify vessel operating common carriers (VOCC). It is typically two to four letters long. The National Motor Freight Traffic Association developed the SCAC code in the 1960s to help road transport companies computerize data and records.

  8. Look-down/shoot-down - Wikipedia

    en.wikipedia.org/wiki/Look-down/shoot-down

    Look-down/shoot-down radars have been enhanced with electronic programs that process the radar image and search for moving objects, which are detected by looking for Doppler shifts in the radar return. See moving target indication. The radar removes all stationary objects (e.g. the ground and buildings) from the display and shows only moving ...

  9. ANSI device numbers - Wikipedia

    en.wikipedia.org/wiki/ANSI_device_numbers

    In Electrical Power Systems and Industrial Automation, ANSI Device Numbers can be used to identify equipment and devices in a system such as relays, circuit breakers, or instruments. The device numbers are enumerated in ANSI/ IEEE Standard C37.2 "Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations" .

  10. List of airline codes - Wikipedia

    en.wikipedia.org/wiki/List_of_airline_codes

    Former name: Atlantic Air Transport; former IATA codes: 7M, DG, transferred to Atlantic Flight Training in 2014. QB AAJ Air Alma: AIR ALMA Canada Ceased operations 10/01/2002; former IATA code: 4L ACS Air Cess: Liberia defunct ADT Air Dorval: AIR DORVAL Canada defunct AHN Air Hungaria: AIR HUNGARIA Hungary AHR Air Adriatic: ADRIATIC Croatia ...

  11. List of international call prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_international_call...

    This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, only the symbol + before the country code may be used [citation needed] irrespective of where the telephone is used at that moment; the ...