Piotr wrote:
> tx-rx distance: 858.7 km, R(earth): 6370 km
> the height of D-layer ... three values: 60,70,80 km

> 60 km   0.738
> 70 km   0.632
> 80 km   0.553

Nice work Piotr.  I'd like to see a plot of signal strength
against distance for 70km ionosphere and see how it compares
with the simple model in

 http://abelian.org/vlf/9k

Too bad we are stuck with their silly polynomial fit for
attenuation.

> In  1-2 forthcoming weekends i will try to prepare  more detailed
> description of the calculational scheme including some graphs,
> fortran code etc.

Looking forward to that.  I can make good use of the fortran code.
Great job!
--
Paul Nicholson
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