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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. Ambient awareness - Wikipedia

    en.wikipedia.org/wiki/Ambient_awareness

    Ambient awareness ( AmA) is a term used by social scientists to describe a form of peripheral social awareness through social media. This awareness is propagated from relatively constant contact with one's friends and colleagues via social networking platforms on the Internet. The term essentially defines the sort of omnipresent knowledge one ...

  4. Digital enhanced cordless telecommunications - Wikipedia

    en.wikipedia.org/wiki/Digital_enhanced_cordless...

    Digital Enhanced Cordless Telecommunications ( DECT) is a cordless telephony standard maintained by ETSI. It originated in Europe, where it is the common standard, replacing earlier standards, such as CT1 and CT2. [1] Since the DECT-2020 standard onwards, it also includes IoT communication. Beyond Europe, it has been adopted by Australia and ...

  5. Communications system - Wikipedia

    en.wikipedia.org/wiki/Communications_system

    Communications system. A communications system or communication system is a collection of individual telecommunications networks systems, relay stations, tributary stations, and terminal equipment usually capable of interconnection and interoperation to form an integrated whole. The components of a communications system serve a common purpose ...

  6. Local food - Wikipedia

    en.wikipedia.org/wiki/Local_food

    v. t. e. Local food is food that is produced within a short distance of where it is consumed, often accompanied by a social structure and supply chain different from the large-scale supermarket system. [1] Local food (or locavore) movements aim to connect food producers and consumers in the same geographic region, to develop more self-reliant ...

  7. Sensitive compartmented information facility - Wikipedia

    en.wikipedia.org/wiki/Sensitive_compartmented...

    A sensitive compartmented information facility ( SCIF / skɪf / ), in United States military, national security/national defense and intelligence parlance, is an enclosed area within a building that is used to process sensitive compartmented information (SCI) types of classified information . SCIFs can be either permanent or temporary and can ...

  8. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...

  9. Radiotelephone - Wikipedia

    en.wikipedia.org/wiki/Radiotelephone

    Radiotelephone. A radiotelephone (or radiophone ), abbreviated RT, [1] is a radio communication system for conducting a conversation; radiotelephony means telephony by radio. It is in contrast to radiotelegraphy, which is radio transmission of telegrams (messages), or television, transmission of moving pictures and sound.