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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. List of amateur radio modes - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_modes

    Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.

  4. List of month-long observances - Wikipedia

    en.wikipedia.org/wiki/List_of_month-long_observances

    June. African-American Music Appreciation Month [28][29] ALS Awareness Month (Canada) Caribbean-American Heritage Month [30] LGBT Pride Month. National PTSD Awareness Day [31] National Safety Month [32] National Smile Month (United Kingdom, May and June) Devotion to the Sacred Heart.

  5. Air traffic control radar beacon system - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_control_radar...

    Mode 3/A is used to identify each aircraft in the radar's coverage area. Mode C is used to request/report an aircraft's altitude. Two other modes, mode 4 and mode S, are not considered part of the ATCRBS system, but they use the same transmit and receive hardware. Mode 4 is used by military aircraft for the Identification Friend or Foe (IFF ...

  6. Aviation transponder interrogation modes - Wikipedia

    en.wikipedia.org/wiki/Aviation_transponder...

    The aviation transponder interrogation modes are the standard formats of pulsed sequences from an interrogating Secondary Surveillance Radar (SSR) or similar Automatic Dependent Surveillance-Broadcast (ADS-B) system. The reply format is usually referred to as a "code" from a transponder, which is used to determine detailed information from a ...

  7. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    Model XAE IFF kit, the first radio recognition IFF system in the U.S. Identification, friend or foe (IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but ...

  8. What Mike Tyson, Jake Paul body language reveals about the ...

    www.aol.com/mike-tyson-vs-jake-paul-100945854.html

    Six body language experts reviewed video of Mike Tyson and Jake Paul facing off at AT&T Stadium, where they're scheduled to fight Nov. 15.

  9. Situation awareness - Wikipedia

    en.wikipedia.org/wiki/Situation_awareness

    Situation awareness. Situational awareness or situation awareness (SA) is the understanding of an environment, its elements, and how it changes with respect to time or other factors. Situational awareness is important for effective decision making in many environments. It is formally defined as: