non-directional radio beacon (NDB)

non-directional beacon (NDB) / non directional beacon

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

non-directional beacon (NDB )

non-directional beacon (NDB)

non-directional radio beacon

directional beacon

non-directional jumping mine

non-directional antenna

directional radio

omni-directional radio range

rotating (radio) beacon

equisignal radio-range beacon

rotating radio beacon

inner marker radio beacon

marker radio beacon (MRB)

middle marker radio beacon

outer marker radio beacon

radio fan marker beacon

radio homing beacon

radio marker beacon

radio-range beacon

emergency position-indicating radio beacon (EPIRB)

radio beacon warhead

radio-range-beacon

radio beacon

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