Keyer Disk

Keyer disks are components used in telegraphy systems to generate Morse code signals. They are typically circular disks with evenly spaced holes or notches around the circumference. As the disk rotates, a mechanical arm or lever passes through the holes or notches, creating interruptions in an electrical circuit. These interruptions correspond to the dots and dashes of Morse code.

Keyer disks are commonly used in telegraph keyers, which are devices that automate the generation of Morse code signals. By controlling the speed and timing of the keyer disk rotation, operators can transmit Morse code messages more efficiently and accurately.

In the supply class Miscellaneous Communication Equipment, keyer disks are categorized as components or accessories that support communication systems. They are part of the broader supply group Communication, Detection, And Coherent Radiation Equipment, which includes various equipment used for communication, detection, and coherent radiation purposes.