English 
directional null
German 
Portuguese 
translation - directional null translate | English dictionary
- directional effect
- directional filter
- directional focussing
- directional isolator
- directional key
directional null
- directional pattern
- directional power meter
- directional radiation
- directional radio beacon
- directional reception
- directional sensitivity
- directional stability
- directional traffic
- directional transmission
- directional transmitter
- directional-control valve
- directions
- directions for use
- directive
- directive aerial
- directive antenna
- directive coil
- directive effect
- directive force
- directive force spring
- directive gain
- directive radiator
- directive reception
- directivity
- directivity factor
