The Communications-Electronics Systems Career Field encompasses the functions of installing, modifying, maintaining, repairing, and overhauling ground television equipment; ground weather equipment; air traffic control, aircraft control and warning, missile warning, and automatic tracking radar equipment; simulator and training systems; ground radio equipment, including carrier repeater, microwave, tropospheric scatter, flight facilities, and light and heavy, fixed and mobile radio equipment and space communications systems equipment; high-speed general and special purpose data processing equipment; automatic communications and cryptographic machine systems; teletypewriter and teleautograph equipment; electromechanical cryptographic equipment; space systems command and control; and associated electronic test equipment. Included in this field are the functions of systems control, automatic tracking equipment operation, display systems operation, and associated communications-electronic equipment for which an operator position is not provided.