Better, these look more like measured signal levels,
The sky wave plot looks like a use of a drafting compass. Actual
measurements would reflect slight aircraft measurement irregularities.
Thanks for the info.
73
Bruce-K1FZ
www.qsl.net/k1fz/pennantnotes.html
On Sat, 14 Feb 2015 04:23:08 -0600, Richard Fry <rfry@adams.net> wrote:
> Lower angle skip, such as WFAN being received in Europe, Africa,
> Caribbean, >etc. would definitely be affected. In the extreme, the
> shape of the >antenna pattern would look more like the one for
> groundwave.
> ________
>
> Below is a link showing the complete 0.15 mV/m groundwave contour of
> WFAN, to approximately the same map scale as the skywave chart linked
> earlier.
>
> Note that even though this GW field intensity is lower than the 0.25
> mV/m contour shown for the 50% nighttime skywave of WFAN, the
> distance along the surface of the ocean to that GW contour is less
> than for the skywave contour for those paths.
>
> http://s20.postimg.org/r9ceghfu5/WFAN_Groundwave.gif _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
----- End forwarded message -----
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