Teletype Model 15
| Teletype Model 15 | |
|---|---|
| Manufacturer | Teletype |
| Model | Model 15 |
| Lifetime | |
| Introduced | 1930 |
| Discontinued | 1954 |
| Communication | |
| Interfaces |
60 mA current loop, 20 mA current loop |
| Baud Rates | 45.5 |
| Character Modes | |
| Attributes | Normal |
The Teletype Model 15 was introduced in 1930 and manufactured through 1954. It used 5-level baudot code for communication over a current loop interface. It was also available in a receive-only (RO) configuration.[1]
The Model 15 was the mainstay of U.S. military communications during World War II.[2] Its rugged cast-iron frame allowed it to survive the high vibration and continuous use typical of shipboard and field deployments.[3] The machine was utilized by every branch of the armed services for tactical messaging and weather reporting.
Although the Teletype Model 28 was intended to replace it by the mid 1940s, the massive investment in Model 15 production facilities for the war effort made it more economical to continue manufacturing the older model.[4] Approximately 200,000 units were produced over its lifecycle.
Outside of military use, the Model 15 was the primary terminal for news wire services, including the Associated Press (AP) and United Press (UP), where it operated 24 hours a day through the late 1950s.[5]
References
- ↑ "TELETYPE MODEL 15 PAGE PRINTER". http://www.baudot.net/teletype/M15.htm. Retrieved Februrary 18, 2020.
- ↑ SMECC. "Teletypewriters Made Easy: A Manual on Teleprinters". https://www.smecc.org/teletypewriters-made-easy/scan%20Teletypewriters%20Made%20Easy%201%20Ded.-Pre.-For-Intro.pdf. Retrieved February 26, 2026.
- ↑ Department of the Army (1945). "TM 11-352: Teletypewriter Sets TG-7-A and TG-7-B". https://www.navy-radio.com/manuals/tty/jh/ttyman1/TeletypeManuals/model15/tm11-352.pdf. Retrieved February 26, 2026.
- ↑ "Teletype Corporation History". https://en.wikipedia.org/wiki/Teletype_Corporation. Retrieved February 26, 2026.
- ↑ Haynes. "Some Notes on Teletype Corporation". https://deramp.com/downloads/mfe_archive/030-Terminals/Teletype/History/haynes--notes.pdf. Retrieved February 26, 2026.
