Wire recording
AKA
Telegraphone
Era
1894–1960s
Format
analog
Developed by
Valdemar Poulsen
(Max) Capacity
1 hour
Size
2 3/4"–3 3/4" (diameter)
3/4"–1 1/4" (thickness)
Fun facts
- This is a magnetic audio format where recordings are made on thin steel or stainless steel wire
- This format was used for dictation and for recording radio programs at home
- This format was used in airplane cockpits and crewless spacecraft in the 1970s because it could withstand higher temperatures than magnetic tape
