radio signal

• Onde électromagnétique transmise par voie hertzienne, utilisée pour porter des informations telles que l'audio, la vidéo ou des données entre un émetteur et un récepteur dans les systèmes de communication sans fil.

An electromagnetic wave transmitted through the air, used to carry information such as audio, video, or data between a transmitter and a receiver in wireless communication systems.

1. Electromagnetic wave transmissionB2formal

   A transmission of electromagnetic waves in the radio frequency range, used to carry information such as sound, data, or commands.

   signal radio

   • The spacecraft sent a faint radio signal back to Earth.
   • Radio signals can be blocked by mountains or tall buildings.
   • They detected a mysterious radio signal from deep space.

2. Communication mediumB2formal

   A specific frequency or pattern of radio waves used for communication between devices.

   signal radio

   • The radio signal from the emergency beacon guided rescuers to the site.
   • Wi-Fi routers use radio signals to connect devices to the internet.
   • The pilot lost the radio signal during the storm.