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first we have to notice, the ionisation made by a meteor is NOT like a flat layer, more, it looks like a cone. this cone can be 100 km long. and at the top, there is the meteor with about 1 mm. see picture on the left side. |
now,
look at the picture below.
you can see a very small
reflection of the person, who is sitting in front of the house at the
face of the cone. if this person would sit a little bit more right (
even not behind the cone ) you couldn't find a reflection at the cones
surface. the same situation with meteorscatters. if both antennas are
opposite the ionisation, there is no reflection-point for
communication.
of course, qso's can be made, using cones left or right of the direct
way, where the antenna gain is not an optimum.
Initial: Aug/2007
Updates: 4.8.2007
Last Update: 22. Sept.2018
oe1smc ©
mayer