Definition

Noun: A telegraph key is a simple switch, typically a lever, used to manually send Morse code signals by opening and closing an electrical circuit. When the operator presses the key down, it completes the circuit, allowing current to flow and transmit a signal (a dot or dash). Releasing the key breaks the circuit, stopping the signal.

Usage

The term telegraph key refers specifically to the operator's primary input device in a traditional telegraph system. * It is used to describe the physical apparatus for sending Morse code. * It is a historical term but is still used by amateur radio operators and telegraphy enthusiasts.

Examples

• The museum displayed an old telegraph key next to a sounder.
• He practiced his Morse code by tapping on a telegraph key connected to a practice oscillator.
• The operator's hand moved swiftly over the telegraph key to send the urgent message.

Advanced Usage

• "To work the key": This phrase means to operate the telegraph key to send a message.
  • The veteran telegrapher could work the key with incredible speed and accuracy.

Variants and Related Words

• Key (noun): In telegraphy and amateur radio contexts, "key" is often used as a shortened form of "telegraph key."
  • He bought a new straight key for his station.
• Straight Key: The most basic and common type of telegraph key.
• Bug Key (Semi-Automatic Key): A type of telegraph key that uses a spring-loaded pendulum to automatically generate a series of dots, while dashes are made manually.
• Electronic Keyer: A modern device that generates precise Morse code dots and dashes, often controlled by a paddle instead of a traditional lever key.

Synonyms

• Signaling Key
• Morse Key
• Transmitter Key

Related Phrases

• "On the key": Actively operating the telegraph key or being in control of a transmission.
  • The net control station is on the key, taking check-ins.

Noun

1. key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed