Turns setscrews to adjust receivers for sensitivity and transmitters for maximum output. Required to have Federal Communications Commission Radiotelephone Operator's license. May install, test, adjust, modify, and repair intercommunication systems. Tests and replaces defective instruments, such as microphones, headsets, dopplers, selcall, transceivers, transponders, and autopilots, using electricians' tools, circuit analyzers, oscilloscopes, and other testing devices. Calibrates installed or repaired equipment to prescribed specifications.
Signs overhaul documents for equipment replaced or repaired.
Adjusts frequencies of radio sets by signaling ground station and turning setscrews. Required to hold Radiotelephone License issued by Federal Communications Commission or Federal Aviation Agency. Tests faulty equipment and applies knowledge of functional operation of electronic units and systems to diagnose cause of malfunction. Tests electronic components and circuits to locate defects, using oscilloscopes, signal generators, ammeters, and voltmeters. Replaces defective components and wiring and adjusts mechanical parts, using hand tools and soldering iron.