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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    In the United States a longer duty cycle is used, 50% for battery -powered buoys (20 seconds on, 20 seconds off) and 75% for on-shore beacons. Ramarks are wide-band beacons which transmit continuously on the radar bands without having to be triggered by an incoming radar signal.

  3. Defense Switched Network - Wikipedia

    en.wikipedia.org/wiki/Defense_Switched_Network

    The Defense Switched Network ( DSN) is a primary information transfer network for the Defense Information Systems Network (DISN) of the United States Department of Defense.

  4. United States military aircraft serial numbers - Wikipedia

    en.wikipedia.org/wiki/United_States_military...

    United States military aircraft serial numbers. AF Serial Number 06-6161, a C-17A Globemaster III. In the United States, all military aircraft display a serial number to identify individual aircraft. These numbers are located on the aircraft tail, so they are sometimes referred to unofficially as "tail numbers".

  5. R-S-T system - Wikipedia

    en.wikipedia.org/wiki/R-S-T_system

    The code is a three digit number, with one digit each for conveying an assessment of the signal's readability, strength, and tone. The code was developed in 1934 by Amateur radio operator Arthur W. Braaten, W2BSR, and was similar to that codified in the ITU Radio Regulations, Cairo, 1938.

  6. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    IMEI number - an example. The International Mobile Equipment Identity (IMEI) is a numeric identifier, usually unique, for 3GPP and iDEN mobile phones, as well as some satellite phones.

  7. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process. The presence on an item of a recycling code, a chasing arrows logo, or a resin code , is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  8. Add, replace or remove AOL account recovery info - AOL Help

    help.aol.com/articles/add-or-update-aol-account...

    Find out how to add or delete a recovery mobile phone number or alternate email address from your AOL account.

  9. Department of Defense Activity Address Code - Wikipedia

    en.wikipedia.org/wiki/Department_of_Defense...

    The Department of Defense Activity Address Code ( DoDAAC) is a six position code that uniquely identifies a Department of Defense unit, activity, or organization that has the authority to requisition, contract for, receive, have custody of, issue, or ship DoD assets, or fund/pay bills for materials and/or services.

  10. North American Industry Classification System - Wikipedia

    en.wikipedia.org/wiki/North_American_Industry...

    Codes. The NAICS numbering system employs a five or six-digit code at the most detailed industry level. The first five digits are generally (although not always strictly) the same in all three countries.

  11. Raytheon Missiles & Defense - Wikipedia

    en.wikipedia.org/wiki/Raytheon_Missiles_&_Defense

    www .raytheonmissilesanddefense .com. Raytheon Missiles & Defense ( RMD) was one of four business segments of RTX Corporation. Headquartered in Tucson, Arizona, its president was Wes Kremer. [1] The business produced a broad portfolio of advanced technologies, including air and missile defense systems, precision weapons, radars, and command and ...