e. Scattered Reflections.
Another irregular variation is the
rapid change of ionization with height.
A radio signal may be
reflected by more than one layer.
The received signal may arrive
from several directions which will cause flutter fading.
7.
Ionospheric Predictions.
By the sounding of the ionosphere,
predictions are possible.
Long range forecasting can predict the
optimum working frequency, maximum useful frequency, and lowest
useful frequency.
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