Frequency Propagation Type RNAV
This topic has far more importance than its simplicity might suggest. If you know the frequency band a navaidnavaid —Navigation Aid is in, then you know the type of wave it is using. If you know the type of wave, then many other details, such as errors of the navaidnavaid —Navigation Aid, will follow.
For example, night effect is only applicable to skywaves, and so therefore only to navaidnavaid —Navigation Aids in the HFHF —1) Radio Waves: High Frequency2) Human Performance: Human Factors frequency band. Therefore, only NDBNDB —Non-Directional Beacons (and HFHF —1) Radio Waves: High Frequency2) Human Performance: Human Factors communications) are affected by night effect.
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