Navigation aids and how to see them on Flightradar24 | Aviation

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NDB (Non Directional Beacon)

A Non-Directional Beacon (NDB) is a type of radio beacon that functions in the Medium Frequency (MF) or Low Frequency (LF) bandwidths. NDBs emit a uniform signal in every direction. This signal includes a coded component, typically one to three letters in Morse Code, which serves as the station’s identifier. NDBs frequently play a role in Non-Precision Approach procedures. Aircraft are equipped with Automatic Direction Finding (ADF) equipment, which utilizes the bearings from NDB signals for navigational purposes.

DME (Distance Measuring Equipment)

Distance Measuring Equipment (DME) is a type of radio navigation system that calculates the slant range (distance) between an aircraft and a ground station. It does this by measuring the time delay of radio signals, which operate in the frequency range of 960 to 1215 megahertz (MHz). DME units are often combined with VORs or NDBs to provide additional distance information. 

DME technology is also used as part of the instrument landing system. An ILS DME provides distance information to landing aircraft that are using the ILS’ localizer and glideslope, replacing the older system of individual outer, middle and inner…

Source www.flightradar24.com

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