F layer
= F layer
{c}
The F layer is a higher main region of the <ionosphere>, above the <E layer>. Its different <electron density> and persistence can permit <skywave> propagation when a probing <radio wave> passes through the lower <E layer>.
= F layer
{c}
The F layer is a higher main region of the <ionosphere>, above the <E layer>. Its different <electron density> and persistence can permit <skywave> propagation when a probing <radio wave> passes through the lower <E layer>.