transponders
Automated radio repliers
A transponder is a device that receives a signal and automatically transmits a response.
Aircraft transponders broadcast identification and altitude to radar systems.
Satellites use transponders to relay communications signals back to Earth.
Toll transponders on vehicles communicate with readers at highway checkpoints: I need to refill my E-ZPass transponder.
The word blends transmitter and responder.
Device preventing movement
- chipSmall broken-off piece
- ignitionStarting combustion process
- anti-theftDesigned to deter stealing
- RFIDWireless identification via electromagnetic fields
proximity · vehicle · starter · security · programmed · cloned · reader · signal
Wireless identification via electromagnetic fields
- keycardElectronic entry credential
- proximityNearness in space
- badgeWorn symbol of membership
- entryAccess or submission
chip · reader · contactless · door · authentication · credential · fob · encrypted
Airborne transportation vehicle
- radarRadio-wave object detection
- beaconGuiding light source
- squawkHarsh grating bird cry
- ATCAviation traffic service
flight · cockpit · altitude · identification · interrogator · airspace · controller · tracking
immobilizer
Device preventing movement
- chipSmall broken-off piece
- ignitionStarting combustion process
- anti-theftDesigned to deter stealing
RFID · proximity · vehicle · starter · security · programmed · cloned · reader · signal · unlock
RFID
Wireless identification via electromagnetic fields
entry · chip · reader · contactless · door · authentication · credential · fob · encrypted · swipe
aircraft
Airborne transportation vehicle
ATC · flight · cockpit · altitude · identification · interrogator · airspace · controller · tracking · surveillance
uplink
Transmission to spacecraft
- downlinkSpacecraft-to-Earth transmission
- bandwidthData transmission capacity
- signalMessage-conveying cue
frequency · relay · broadcast · geostationary · payload · channel · communication · dish · reception · transmission
vessel
Receptacle for contents
- shipSeagoing transport vessel
- navigationDetermining position and course
- maritimeOf the sea
tracking · identification · port · radar · beacon · VHF · offshore · buoy · cargo · fleet
- trackerslocation tracker, pet tracker, car tracker, phone tracker, fitness tracker
- aircraft manufacturingfuselage, airframes, final assembly, assembly line, avionics
- Air Trafficair traffic control, ATC, controller, radar contact, radar tracking
- air traffic controltower control, control tower, controllers, controller, radar systems
- maritime surveillancecoastal patrol, patrol boats, sea patrol, radar detection, hydrophones
- military avionicsavionics, radar systems, electronic warfare, navigation systems, flight controls
transponderstransmitters
Devices that send signals
receivers · beacons · radio receivers · sensors · detectors
- transponder keyCoded key for vehicles