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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 ...
Direction finding antenna near the city of Lucerne, Switzerland. Direction finding (DF), or radio direction finding (RDF), is the use of radio waves to determine the direction to a radio source. The source may be a cooperating radio transmitter or may be an inadvertant source, a naturally-occurring radio source, or an illicit or enemy system.
Emergency locator beacon. An emergency locator beacon is a radio beacon, a portable battery powered radio transmitter, used to locate airplanes, vessels, and persons in distress and in need of immediate rescue. Various types of emergency locator beacons are carried by aircraft, ships, vehicles, hikers and cross-country skiers.
Avalanche transceiver. An avalanche transceiver or avalanche beacon is a type of emergency locator beacon, a radio transceiver (a transmitter and receiver in one unit) operating at 457 kHz for the purpose of finding people buried under snow. They are widely carried by skiers, particularly back country skiers for use in case a skier is buried by ...
8. Spy Dialer. Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and ...
Tile. Tile (stylized as tile) is an American consumer electronics company which produces tracking devices that users can attach to their belongings such as keys and backpacks. A companion mobile app for Android and iOS allows users to track the devices using Bluetooth 4.0 in order to locate lost items or to view their last detected location. [1]
A Taiwanese electronics manufacturer has said that a tiny European company made the pagers linked to the deadly attack targeting Hezbollah members in Lebanon on Tuesday, as a fresh wave of walkie ...
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