Job Description:

• 1) Operates cryptographic equipment to code, transmit, and decode secret messages for units of armed forces, law enforcement agencies, or business organizations: Selects required code according to instructions, using code book.

• 2) Inserts specified code card into machine station to program encoding machine.

• 3) Types plain text data on keyboard of automatic machine which encrypts and transmits message, or on semiautomatic machine which converts plain text into taped code for transmission via teletype machine.

• 4) Feeds incoming tape into decoder device on semiautomatic machine and distributes decoded messages.

• 5) Resolves garbled or undecipherable messages, using cryptographic procedures and equipment or requests retransmission of message.

• 6) May operate teletype or teleprinter equipment to transmit messages.

• 7) May operate radio to send and receive data.