Test or repair mobile or stationary radio transmitting and receiving equipment and two way radio communications systems used in ship to shore communications and found in service and emergency vehicles.

Repair, install or maintain mobile or stationary radio transmitting, broadcasting, and receiving equipment, and two way radio communications systems used in cellular telecommunications, mobile broadband, ship to shore, aircraft to ground communications, and radio equipment in service and emergency vehicles. They test and analyze network coverage.

Repair, maintain, or install computers, word processing systems, automated teller machines, and electronic office machines, such as duplicating and fax machines.

Directly supervise and coordinate the activities of mechanics, installers, and repairers.