non-directional antenna

non-directional beacon (NDB) / non directional beacon

directional antenna

non-directional jumping mine

non-directional radio beacon with marker (NDB/MRB)

non-directional beacon (NDB )

non-directional beacon (NDB)

non-directional radio beacon (NDB)

non-directional radio beacon

marker antenna / marker beacon antenna

antenna array / array antenna

non-interference; non-intervention

non-mandated non-governmental organization

controlled directional mine

directional-control hydraulic valve

frequency and directional chart

directional tread type tire

directional control pedal

anti-torque control pedal / directional control pedal

directional control pedal / anti-torque control pedal

directional gyro

directional noise measurement

directional radio

directional trimming actuator

omni-directional radio range

directional stability

directional infrared counter measures (DIRCM)

directional infrared countermeasures (DIRCM)

directional

directional angle

directional antipersonnel weapon

directional marker

directional napalm fougasse bomb