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Non-Directional Beacon
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| Article Information | ||
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| Category: | General | 
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| Content source: | SKYbrary | 
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| Content control: | SKYbrary |
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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.