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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 electronic color code mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic_color...

    The first letter of the color code is matched by order of increasing magnitude. The electronic color codes, in order, are: 0 = Black; 1 = Brown; 2 = Red; 3 = Orange; 4 = Yellow; 5 = Green; 6 = Blue; 7 = Violet; 8 = Gray; 9 = White. Easy to remember. A mnemonic which includes color name(s) generally reduces the chances of confusing black and brown.

  4. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    This is a list of Hypertext Transfer Protocol (HTTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. It includes codes from IETF Request for Comments (RFCs), other specifications, and some additional codes used in some common applications of the HTTP.

  5. The settings you should change immediately after buying a new TV

    www.engadget.com/2018-03-05-best-tv-settings.html

    The settings you should probably disable. Jump into your TV's settings and head to the picture settings menu. Before you start tweaking, set the display's mode to "Movie" (this is sometimes called ...

  6. HD 101: Discrete IR codes - Engadget

    www.engadget.com/2009-02-05-hd-101-discrete-ir...

    This is where discrete IR commands come in. The remote knows the TV should be on, so it can send a command that it knows will always turn the TV on, even when the TV is already on, so the command ...

  7. Here are the devices law enforcement use to spy on you - Engadget

    www.engadget.com/2015-12-17-spy-hardware-catalog...

    Updated Thu, Dec 17, 2015 · 2 min read. The Intercept obtained the catalog of devices used by federal and local law enforcement to collect and monitor cell phone data. The tracking hardware ...

  8. 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" .

  9. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    1993: split to create 905. 2001: overlaid by 647. 2013: overlaid by 437. 2025: overlaid by 942. area code 387 is reserved as a fifth code for the region. 417. Missouri ( Springfield, Joplin, Branson, Lamar, Lebanon, and most of southwestern Missouri) 1950. created from parts of the area codes 314 and 816.