Multichannel transmission systems operator-maintainer supervise, install, operate, and perform unit level maintenance on multichannel line-of-site and tropospheric scatter communications systems, communications security (COMSEC) devices, and associated equipment. Operates and performs preventive maintenance checks and services (PMCS) on assigned vehicles. Installs, operates, and performs PMCS on power generators.

The Signal Support Systems Specialist supervises, installs, employs, maintains, troubleshoots, and assists users with battlefield signal support systems, terminal devices, satellite communications equipment, and automated telecommunications computer systems, to include local area networks, wide area networks, and routers. Integrates signal systems and networks; performs unit level maintenance on authorized signal equipment and associated electronic devices; trains and provides technical assistance to users of signal equipment; and operates and performs preventive maintenance checks and services (PMCS) on assigned vehicles and power generators.