Definition

Noun: 1. A method of communication: The technology or process of sending telegraphic messages (typically encoded, such as in Morse code) using radio waves, without the need for physical wires or cables to connect the sender and receiver.

Usage

• Wireless telegraphy was a revolutionary advancement over traditional wired telegraph systems.
• Ships at sea relied on wireless telegraphy for distress signals and communication.
• The invention of wireless telegraphy is credited to Guglielmo Marconi.

Advanced Usage

• Historical Context: The term often refers specifically to early radio communication technology from the late 19th and early 20th centuries, predating voice transmission.
• Technical Operation: It involves transmitting electrical signals through space via electromagnetic radiation, which are then decoded by a receiver.

Variants and Related Words

• Wireless Telegraph (noun): The apparatus or device used for wireless telegraphy.
• Radiotelegraphy (noun): A technical synonym for wireless telegraphy.
• CW (Continuous Wave) Telegraphy: A specific mode of transmission commonly used in wireless telegraphy.

Synonyms

• Radiotelegraphy
• Radio telegraphy
• Wireless signaling

Related Phrases

• Spark-gap transmitter: An early type of transmitter used for wireless telegraphy.
• Morse code over radio: Describes the typical method of message encoding used in this technology.

Noun

1. the use of radio to send telegraphic messages (usually by Morse code)
2. telegraphy that uses transmission by radio rather than by wire