Definition

Non-Directional Beacon is defined as a radio beacon operating in the MF or LF band-widths.

Description

A non-directional beacon (NDB) is a radio beacon operating in the MF or LF band-widths. NDBs transmit a signal of equal strength in all directions. The signal contains a coded element which is used for station identification (normally 1-3 letters in Morse Code).

NDBs are often associated with Non-Precision Approach procedures.

Automatic Direction Finding (ADF) (ADF) equipment on board aircraft uses bearings from NDBs for navigation purposes.

Related Articles

• Automatic Direction Finding (ADF);
• VHF Omnidirectional Radio Range (VOR);
• Distance Measuring Equipment (DME);
• Instrument Landing System (ILS);
• Global Positioning System (GPS);

• ICAO Phonetic Alphabet