Which technology uses Morse code for communication?

Morse code is a method of encoding text characters as sequences of short and long signals (dots and dashes) that can be transmitted over various communication media. Radio transmissions are particularly well-suited for Morse code because they can utilize audible tones or electrical signals to convey the coded messages over distances without requiring physical connection.

In the context of radio communication, Morse code can be transmitted through sound waves or radio waves, making it a reliable and efficient means of communication, especially in situations where voice communication is not possible or practical. Historically, Morse code was widely used in maritime communication and aviation, where it played a crucial role in sending distress signals and other vital information.

The other technologies listed do not primarily use Morse code for communication. Television relies on visual transmission of images and sound, smartphones utilize various forms of digital communication, including text, voice, and data, while satellite dishes focus on receiving and transmitting signals to and from satellites, typically using different digital formats rather than Morse code. Thus, radio transmissions remain the correct context for the application of Morse code.