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  2. 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 ...

  3. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    Mode 2: military only; provides 4-digit octal (12 bit) unit code or tail number. Mode 3/A: military/civilian; provides a 4-digit octal (12 bit) identification code for the aircraft, assigned by the air traffic controller. Commonly referred to as a squawk code. Mode 4: military only; provides a 3-pulse reply, delay is based on the encrypted ...

  4. List of Bluetooth protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_protocols

    The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.

  5. Ray J - Wikipedia

    en.wikipedia.org/wiki/Ray_J

    Ray J teamed up with Bobby Brackins for the track "I Hit It First", which was released on April 6, 2013. "I Hit It First" caused controversy for allegedly aiming its lyrics at Kim Kardashian and Kanye West. The song has since debuted at #51 on the Billboard Hot 100. "ATM" was released as a single on August 5, 2014, and it features Migos.

  6. Aviation transponder interrogation modes - Wikipedia

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

    Provides 2-digit 5-bit mission code (cockpit selectable) 2: Provides 4-digit octal unit code (set on ground for fighters, can be changed in flight by transport aircraft) 3: A: Provides a 4-digit octal identification code for the aircraft, set in the cockpit but assigned by the air traffic controller. Mode 3/A is often combined with Mode C to ...

  7. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.

  8. List of Bluetooth profiles - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_profiles

    Human Interface Device Profile (HID) [ edit] Provides support for HID devices such as mice, joysticks, keyboards, and simple buttons and indicators on other types of devices. It is designed to provide a low latency link, with low power requirements. PlayStation 3 controllers and Wii remotes also use Bluetooth HID.

  9. IFF Mark X - Wikipedia

    en.wikipedia.org/wiki/IFF_Mark_X

    The interrogation signal, sometimes known as the uplink format, consists of two 0.8 μs long pulses on 1030 MHz. The time between the pulses defines which mode is being queried. Mode 1 had two pulses 3 μs apart (±0.2 μs), Mode 2 was 5 μs and Mode 3 was 8 μs. The civil B, C and D were 17, 21 and 25 μs apart.