Single-hop Skip Distances at Various Vertical Take-off Angles
NOTE: Further distances must use multiple hops. This table does not
include refraction from E, F or sporadic E layers.
In certain areas of the world, especially the hot climates around the
equator, the atmospheric noise is very high. This forces you to use
higher frequencies to get above the noise. The further you get away
from the equator, the quieter it becomes. As you approach the pole,
the aurora (northern lights)