Aviation Electronics Technician 1 - Historic Naval Ships Association

the keyboard are sent directly. Received data is printedon the high-speed printer adjacent to the keyboardThree radios are available in the aircraft for TTYtransmission and reception: UHF-2, HF-1, and HF-2.The TSEC/KW-7 security unit provides encryption anddecryption for all teletype data. The teletype informationis always routed through the TSEC/KW-7 for encryptionand decryption.SYSTEM COMPONENTSThe following is a brief descriptioncomponents of the teletype system.of the majorKeyboard Transmitter TT-568/AGC-6Figure 1-19-Keyboard transmitter TT-568/AGC-6.The keyboard transmitter is shown in figure 1-19.This unit controls the TTY system. In addition to astandard keyboard, there are special function keysprovided.Teleprinter TT-567This unit (fig. 1-20) is a high-speed printer. Itcontains the necessary hardware and logic circuitry toprocess baudot inputs and produce hard-copy outputs.TTY Signal Data ConverterFigure 1-20.-Teleprinter TT-567.This unit (fig. 1-21) provides an interface betweenthe TTY and the radios. It converts teletype language(baudot code) into audio tones, which can be transmittedFigure 1-21.-TTY signal data converter.1-23