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1 E layer: The next layer beyond the D layer is called the E layer. 2  This exists at an altitude of between 100 and 125 km. 3  Instead of acting chiefly as an attenuator, this layer reflects radio signals although they still undergo some attenuation.
if the ionosphere is so thin and has very low denisty how is it able to change the movement of shortwave radio? it isnt like glass or a mirror becuase it really isnt a solid like those are. can the ionosphere be some type of matter? sorry but everyone says radio waves bounce off the ionosphere but no one explains...