radiotelephone
Voice-over-airwaves device
A radiotelephone is a telephone that transmits voice over radio waves rather than through wires—used in ships, aircraft, vehicles, and remote locations where landlines are impractical.
Early mobile phones were radiotelephones before cellular networks.
The verb means to communicate by such a device: The captain radiotelephoned the coast guard.
Signal-emitting device
- receiverOne who accepts transmission
- transceiverDual-function communication device
- antennaBroadcast signal receiver
- frequencyRate of recurrence
modulation · bandwidth · VHF · UHF · HF · shortwave · duplex · simplex
Between boat and land
- VHFMid-range radio spectrum
- distressSevere anxiety or suffering
- SOSMorse distress code
- maydayRadio emergency signal
vessel · navigation · seafaring · nautical · mariner · bridge · harbor · lifeboat
Able to be carried
- handheldDesigned for palm use
- walkie-talkiePortable handheld radio transceiver
- two-wayOperating in both directions
- batteryPortable electricity storage
charging · push-to-talk · rugged · waterproof · compact · dispatch
Severe anxiety or suffering
- SOSMorse distress code
- maydayRadio emergency signal
- rescueSave from harm
- search-and-rescueLocating and retrieving imperiled persons
transmitter
Signal-emitting device
- receiverOne who accepts transmission
- transceiverDual-function communication device
- antennaBroadcast signal receiver
frequency · modulation · bandwidth · VHF · UHF · HF · shortwave · duplex · simplex · PTT
ship-to-shore
Between boat and land
mayday · vessel · navigation · seafaring · nautical · mariner · bridge · harbor · lifeboat · emergency
portable
Able to be carried
- handheldDesigned for palm use
- walkie-talkiePortable handheld radio transceiver
- two-wayOperating in both directions
battery · charging · push-to-talk · rugged · waterproof · compact · dispatch
distress
Severe anxiety or suffering
search-and-rescue · beacon · alert · responder · dispatch · 911 · lifeline
cockpit
Pilot's control compartment
- pilotOne who steers aircraft
- transponderSignal-activated transmitter
- maydayRadio emergency signal
squawk · headset · approach · departure · clearance · co-pilot · airband · PTT
- Marine Radiomayday call, distress call, pan-pan, hailing, storm warning
- vintage radiostransistor, crystal set, stereo receiver, shortwave, tuning dial
radiotelephonelandline
Stationary wired telephone
corded phone · desk phone · wireline · rotary phone · POTS
radiotelephonetelegraph
Electrical message system
written correspondence · letter · telegram · text message · cable