radiotelegraph
Wireless dot-dash sender
A radiotelegraph is a device for sending telegraph messages by radio waves rather than through wires.
The technology was crucial for ship-to-shore communication before voice radio became practical: The Titanic's radiotelegraph operators sent distress signals until the power failed.
The verb means to send such a message.
Radio telegraphy pioneer
- TitanicIll-fated 1912 vessel
- spark-gapElectrode separation for discharge
- transatlanticSpanning the ocean between continents
- pioneeringFirst to explore territory
Signal-emitting device
- antennaBroadcast signal receiver
- frequencyRate of recurrence
- shortwaveHigh-frequency radio band
- broadcastTransmitted media signal
relay · airwaves · carrier · modulation · waveform · propagate · beam · bandwidth
Severe anxiety or suffering
- SOSMorse distress code
- beaconGuiding light source
- alertWarning or watchfulness
- warningAlert about danger
call-sign · frequency · interference · static · noise · fading · atmospheric · jamming
Lock-opening device
- transmitterSignal-emitting device
- receiverOne who accepts transmission
- transceiverDual-function communication device
- antennaBroadcast signal receiver
oscillator · detector · amplifier · headphones · sounder · spark-gap · galena · valve
Marconi
Radio telegraphy pioneer
- TitanicIll-fated 1912 vessel
- spark-gapElectrode separation for discharge
- transatlanticSpanning the ocean between continents
pioneering · shipboard · SOS · Fleming
transmitter
Signal-emitting device
broadcast · relay · airwaves · carrier · modulation · waveform · propagate · beam · bandwidth · oscillation
dot
Small circular mark
SOS · keying · operator · code · decipher · decode · encode · CW · alphabet · message
distress
Severe anxiety or suffering
warning · call-sign · frequency · interference · static · noise · fading · atmospheric · jamming · intercept
key
Lock-opening device
- transmitterSignal-emitting device
- receiverOne who accepts transmission
- transceiverDual-function communication device
antenna · oscillator · detector · amplifier · headphones · sounder · spark-gap · galena · valve · capacitor
message
Transmitted communication
- cablegramWired overseas message
- dispatchSend with speed
- correspondenceExchanged written communication
relay · transmission · encode · decode · network · station · traffic · intercept · reception · sender
radiotelegraphdigital communication
Information exchange via technology
email · satellite phone · cellular communication · smartphone · instant messaging