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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. Automatic Packet Reporting System - Wikipedia

    en.wikipedia.org/wiki/Automatic_Packet_Reporting...

    Automatic Packet Reporting System ( APRS) is an amateur radio -based system for real time digital communications of information of immediate value in the local area. [1] Data can include object Global Positioning System (GPS) coordinates Non-directional beacon, weather station telemetry, text messages, announcements, queries, and other ...

  4. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.

  5. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    Unstructured Supplementary Service Data ( USSD ), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers. USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content ...

  6. Air traffic control radar beacon system - Wikipedia

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

    Mode 2 is used to identify military aircraft missions. 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.

  7. Why a log of redacted Signal messages shines a light on ... - AOL

    www.aol.com/finance/why-log-redacted-signal...

    That’s up from 25.2% in 2022 and 24.1% in 2021. But earlier this month, I was reminded of Amazon’s male-dominated leadership beyond the numbers. As part of the FTC’s antitrust lawsuit ...

  8. 16-line message format - Wikipedia

    en.wikipedia.org/wiki/16-line_message_format

    16-line message format. 16-line message format, or Basic Message Format, is the standard military radiogram format (in NATO allied nations) for the manner in which a paper message form is transcribed through voice, Morse code, or TTY transmission formats. The overall structure of the message has three parts: HEADING (which can use as many as 10 ...

  9. Telephone numbers in Ghana - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Ghana

    The Ghana telephone numbering plan is the system used for assigning telephone numbers in Ghana. It is regulated by the National Communications Authority, which holds responsibility for telecommunications . Since 1 May 2010, all fixed-line numbers and mobile numbers have 9 national (significant) numbers after the '0' trunk code. [1]