What is the principle use of radiotelegraphy?

The principle use of radiotelegraphy is continuous wave messaging. This method involves the transmission of Morse code signals through radio waves, utilizing a continuous wave for communication. The key characteristic of radiotelegraphy is its effectiveness in sending short and long signals that correspond to dots and dashes of Morse code, allowing for reliable and straightforward messaging over long distances, particularly in situations where voice communication may not be feasible or effective.

In radiotelegraphy, the continuous wave serves as a foundation for encoding messages, making it an efficient way to communicate essential information, especially in maritime and aviation contexts. The clarity and simplicity of this method contribute to its continued significance in certain applications, despite the prevalence of more modern digital communication techniques today.