electromagnetic, waves of energy used to send radio signals through the air, transmitter, a device that sends out signals or messages, receiver, a device that receives signals or messages, antenna, a rod or wire used to send and receive radio waves, patent, a legal document giving an inventor rights to an invention, wireless telegraphy, sending messages through the air without wires, Morse code, a system of dots and dashes used to send messages, broadcast, to send music, speech, or programs over the radio, distress signals, emergency messages asking for help, frequencies, radio channels used for communication signals.

Leaderboard

Visual style

Options

Switch template

)
Continue editing: ?