On Thursday, January 23, 1997 9:30 AM, n4su@ols.net wrote:
<snip>
>Why is it always S.E. (grey line) on 40M and 80M and N.E. over Europe on 160M.
>I am
>skeptical about a current (expert?) theory that the 160M propagation is a
>result of some
>ionospheric ducting or whatever. "Low level ducting" that is! I would like to
>hear more on
>this (from NM7M?). My Geochron time clock shows a perfect demonstration of
>grey line
>propagation on 30M, 40M and 80M, S.E., but certainly not on 160M!. I haven't
>really listened
>much on the H.F. bands.
The reason you are getting NE on 160 and SE on the others is probably because
on the higher bands the D layer has discipated enough to allow them to propagate
that far but not for 160. In the NE direction you are looking at sunrise
and no D layer, so 160 hops right along with little or no absorbtion.
Just my theory but it sounds good.
73
Kevin, WB5RUE
I'm Voltohm of Borg! Resistance is E/I, Power is EI, you will
be attenuated!
><snip>
>73, Dave--N4SU
>
>
>
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