Non-Directional Beacon

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.A Non-Directional Beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid. As the name implies, the signal transmitted does not include inherent directional information, in contrast to other navigational aids such as Low Frequency Radio Range, VHF omnidirectional range (VOR) and TACAN. NDB signals follow the curvature of the earth, so they can be received at much greater distances at lower altitudes, a major advantage over VOR. However, the NDB signal is affected more by atmospheric conditions, mountainous terrain, coastal refraction and electrical storms, particularly at long range. Even with the advent of VHF omnidirectional range (VOR) systems and Global Positioning System (GPS) navigation, NDBs continue to be the most widely-used radio navigational aid worldwide

Klappentext

A Non-Directional Beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid. As the name implies, the signal transmitted does not include inherent directional information, in contrast to other navigational aids such as Low Frequency Radio Range, VHF omnidirectional range (VOR) and TACAN. NDB signals follow the curvature of the earth, so they can be received at much greater distances at lower altitudes, a major advantage over VOR. However, the NDB signal is affected more by atmospheric conditions, mountainous terrain, coastal refraction and electrical storms, particularly at long range. Even with the advent of VHF omnidirectional range (VOR) systems and Global Positioning System (GPS) navigation, NDBs continue to be the most widely-used radio navigational aid worldwide