Beacons

aircraft electronic recording device

distress radiobeacon, a tracking transmitter that is triggered during an accident

radio transmitter to identify a location for navigation aid

A beacon is an intentionally conspicuous device designed to attract attention to a specific location. A common example is the lighthouse, which draws attention to a fixed point that can be used to navigate around obstacles or into port. More modern examples include a variety of radio beacons that can be read on radio direction finders in all weather, and radar transponders that appear on radar displays.

radio transmitter which emits radio waves in all directions

system of beacons stretching across Anatolia

lighthouse used to guide aircraft with lighted beacons at night

beacon installed at an airport

Phryctoria () was a semaphore system used in Ancient Greece. The phryctoriae were towers built on selected mountaintops so that one tower (phryctoria) would be visible to the next tower (usually 20 miles away). The towers were used for the transmission of a specific prearranged message. One tower would light its flame, the next tower would see the fire, and light its own.

thumb|right|300px|Photograph showing Balisor beacons in use on high voltage cables Balisor is a system of illuminated beacons for high voltage power lines using a cold-cathode low-pressure neon lamp, used as an aircraft warning light.

type of VHF radio beacon used in aviation

17th-century Japanese coastal observatory structures