FSK (Frequency Shift Keying) terminal (1,232.5/1,317.5 Hz), used for teleprinter operation over two-wire or four-wire voice channel.
Transistorized, utilizing 200 Hz bandwidth (1,200 to 1,400 Hz).
Used by the US Military from early 1960s until late 1970s, designated TH-22/TG.
Used by the IDF during the War of Attrition (1967-1970) and the Yom Kippur War (1973).
Power supply: 24 Volts DC or 110/220 Volts AC.
