Tangible Media: Removable Storage of Image, Sound, Motion and Data
Tangible Media: Removable Storage of Image, Sound, Motion and Data
Tangible Media: Removable Storage of Image, Sound, Motion and Data
Profile
Teleplex A137 Continuous Sender

Date:

c. 1930s

For a Morse code repeater. A morse code message could be assembled on the rim of a rotating disc to program a repeating message. Metal slugs representing dots and dashes displaced a lever to open and close a circuit.