Beside LORENZ, the SIEMENS company was one of the inventors of the German TELEX network. They started production of teleprinters end of the 20's. At the right you see their mechanical teleprinter products over the years.
Siemens T 25                           1930-1932
Electrical tapeprinter operating to the start-stop system with 29er alphabet (not yet ITA2), typedrum printer, speed 45,45 bauds 4-row QWERTZ (German) keyboard double current transmitter and receiver machines produced: 223
	Siemens T 25
Siemens T 36                           1931-1945
Electrical tapeprinter (further development of the T 25) now ITA2 alphabet typedrum printer speed 50 bauds 4-row QWERTZ (German) keyboard machines produced: aprx. 8000 From this machine the "Geheimschreiber T52" was developed.
	Siemens T 36
Siemens T37                                1933 - 1960
5 level (bit) Baudot code page printer speed 50 (45) bauds = 66 (60) wpm type basket printing mechanism
wiring diagram
	Late ASR from 1960
Siemens T loch12             circa 1950 - 1965
5 level (bit) Baudot code manual tape perforator used in 50's and 60's
	One of my collection
Siemens T send 61             circa 1950 - 1965
5 level (bit) Baudot code separate tape distributor speed 50 (45) bauds = 66 (60) wpm often used together with early T37 machines which had no own tapereader
Siemens T 68                                 1951 - 196?
5 level (bit) Baudot code tape printer speed 50 (45) bauds = 66 (60) wpm metal type cylinder printing mechanism Available also as typing reperforator machine. This machine was widely used in German Telegram Service by the German "Bundespost".
	Early two-tape ASR model
Siemens T 100                            1958 - 198?
5 level (bit) Baudot code page printer speed from 45 bauds (60 wpm) up to 75 bauds (100 wpm) by changing the gear sets. type basket printing mechanism This is the most popular Siemens machine, built in numerous versions and cases. Also used as input/output terminal at early computers with special computer Baudot code. Built in license in Chechoslovakia until the 80s.
	Late ASR model
Siemens T 150                            circa 1973	T150 ASR
5 level (bit) Baudot code page printer speed 50/75/100 bauds type basket printing mechanism The T150 is a semi-electronic machine with an electronic keyboard and an electronic (TTL logic) coding and decoding unit. The machine is powered by a 1400 rpm induction motor, but the timing is crystal controlled. Speed is switchable between 50 - 75 and 100 Bauds. Printing unit is the type basket printer of the T100 series. Not many machines were produced of this type. Only a few countries gave approval for TELEX use, not even Germany gave approval for its TELEX network. Main usage was in private networks like police, government or in radio networks (government, marine etc.)
click here for electronic Siemens teleprinters

Deutsch | New | Telex Net | Teleprinters | Telexphone Net | Download | Forum | Links | Guestbook | About me | HOME