Ken Kopp wrote:
Six tends to peak near the Spring and Fall equinox because
of the earth's tilting towards the sun at these times.
Probably a typo, but should be corrected. :-) 6M sporadic-E propagation
peaks around the SOLSTICES (June and December), not the equinoxes. There is
rarely ever any sporadic-E propagation around the equinoxes.
The summer Es season in North America typically runs from mid-May through
mid-August, with the southeast US getting some early sporadic-E openings by
late April. The winter Es season, in which the openings are typically less
numerous and weaker than during summer, extends from roughly late November
through mid-January. Sporadic-E can occur at any time, but it is extremely
rare from mid-February through mid-April and from mid-September through
mid-November in North America.
There is a tremendous amount to be learned about 6 meter propagation. It is
the only band we have where ALL known radio propagation modes (and probably a
few unknown ones) can be experienced at one point or another. It is truly a
mix of HF and VHF characteristics.
Bill / W5WVO
DM65
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