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radio signal

radio signal

30 2.7
A wave used to send or receive information through the air
  • noun
  • /ˈreɪdioʊ ˈsɪɡnəl/
  • Specialized
: señal de radio
  • The VLA is such a sensitive receiving system that it could detect a cell phone's radio signal at the distance of Jupiter.
  • transmit radio signal
  • send radio signal
  • receive radio signal

And then he ends up getting a radio signal, but it's not from the command centre.

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Examples

  • In some instances, the radio signal was blocked by topography or trees.

    Academic text (1996)
  • Each satellite constantly broadcasts radio signals that travel from space to your phone at the speed of light.

  • And then he ends up getting a radio signal, but it's not from the command centre.

  • I keep losing radio signal.

  • A radio signal from another world.

  • How long does it take for a radio signal to travel to Mars?

    Academic text (2007)
  • Yesterday morning, American scientists detected a radio signal from space.

    Fiction book (1997)
  • Professor Gerran, we just picked up a radio signal, distorted and breaking up.

  • Most homes are enveloped by high walls and have sophisticated security systems linked by radio signal to armed response companies.

    Academic text (1998)
  • People on Earth communicate with spacecraft using a radio signal transmitted from the control center.

Synonyms

signal
vsradio signal
  • Specialized
854 3.8

A change in electric current or voltage that carries information in devices

is specifically an electromagnetic wave used for wireless sending and receiving information
radio wave
vsradio signal
  • Specialized
23 3.2

A wave of invisible energy that sends signals to radios and phones

is used specifically for sending or receiving information rather than general physics
radio frequency
vsradio signal
  • Specialized
19 4.1

A range of waves used to send wireless signals, for example in radios or phones

describes the actual transmitted information, not just the frequency value
carrier
vsradio signal
  • Specialized
11 5.6

A radio wave changed to send sound or data through the air

is broader, covering any wave used for transmitting or receiving information
carrier wave
vsradio signal
  • Specialized
7 6.1

Radio wave that carries information when its strength, rate, or timing is changed

is the general term for a wave used to send or receive information
radio emission
vsradio signal
  • Specialized
1 5.2

A wave like radio signals that an object sends out

is focused on use for sending or receiving information rather than just presence
radio radiation
vsradio signal
  • Specialized
1 4.0

Waves that carry sound and pictures through the air, like radio and TV signals

is the specific term for waves used directly to carry information
radio beam
vsradio signal
  • Specialized
1 4.8

A narrow radio signal that helps pilots find the runway in poor visibility

is any wave used for communication, not only narrow directed guiding transmissions
radiofrequency
vsradio signal
  • Specialized
1 4.6

A radio wave used for wireless signals or medical treatment

is the transmitted information itself rather than the frequency band or range
radiotelegraphic signal
vsradio signal
  • Archaic
6.1

A message sent by radio using dots and dashes

is the general term for any wave used to send or receive information

How Strong

reception
  • Jargon
87 3.7
radio signal
  • Specialized
30 2.7
faintness
1 5.5

Surface Forms

radio signal singular
radio signals plural

Morphology

radio + signal

The meaning 'a radio wave used for transmitting or receiving information' is directly compositional from 'radio' (broadcasting via electromagnetic waves) and 'signal' (a transmission carrying information). This is a common, cross-linguistic noun + noun compound following standard English combination patterns, so a B1 learner who knows both constituents will readily understand it.

Etymology

Radio signal: The noun radio signal comes from the image of invisible waves carrying a message. The word radio refers to those waves and signal is the sign or message they send, so the phrase means 'a wave that carries sound or data'.