Nondirectional radio beacon (NDB)

Definitions

• A ground-based radio transmitter that transmits radio energy in all directions.
• An L/MF or UHF radio beacon transmitting nondirectional signals whereby the pilot of an aircraft equipped with direction finding equipment can determine bearing to or from the radio beacon and “home”on or track to or from the station. When the radio beacon is installed in conjunction with the ILS marker, it is normally called a compass locator.

References

• Instrument Flying Handbook, Federal Aviation Administration, 2014
• Instrument Procedures Handbook, Federal Aviation Administration, 2017