direction finder
Locates radio transmitters
A direction finder is a radio receiver that determines the direction from which a signal originates.
Used in navigation and search-and-rescue operations, it locates transmitters by rotating an antenna or comparing signal strength across multiple receivers: The coast guard used a direction finder to locate the distress beacon.
- radio receiverFrequency-tuned listening device
- GPS receiverSatellite positioning device
- homing beaconSignal for finding position
- magnetometerInstrument measuring field strength
- antennaBroadcast signal receiver
compass · transponder · navigation aid · sextant · map · altimeter · interferometer · bearing · true north · satellite dish · radar · triangulation · sonar · signal strength · gyroscope · dead reckoning · walkie-talkie · chronometer
direction finderconfusion
Mental disorientation or bewilderment
misdirection · labyrinth · maze · fog · wilderness
direction, finder, direct, find, director, directory, directive, directly, indirect