radio countermeasures operator

radio telephone operator (RTO)

navigator-radio operator

flight radio operator

radio operator

radio relay operator

radio-relay and carrier operator

radio countermeasures

radio frequency countermeasures

radio-radar countermeasures

air traffic control operator

control tower operator

early warning system (EWS) operator

identification operator

operator control unit (OCU)

operator maintenance

operator’s pack

operator's permit

ship operator

telephone operator

aiming rule operator

azimuth (deflection) display board operator

control post operator

vertical control operator

fire-control operator

air operator certificate

aircraft operator

airport operator

flight operator

flight systems operator

operator  D / Dt

operator communication

radar operator