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Dick Rollema wrote:
<blockquote TYPE=CITE><b><font size=+0>To All from PA0SE</font></b>
<p><b><font size=+0>Reg Edwards, G4FGQ, wrote:</font></b>
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<blockquote type=cite class=cite cite><font size=+0>I have just checked
the source code in program GrndWav3. It does make use</font>
<br><font size=+0>of CCIR curves and data for refraction over the horizon
although I have had</font>
<br><font size=+0>to use some intelligent guesswork to extend to 30 MHz.
It's good to be</font>
<br><font size=+0>reassured I havn't introduced any bugs.</font></blockquote>
<p><br><b><font size=+0>CCIR Recommendation 368-7 contains curves for frequencies
from 10kHz up to and including 30MHz.</font></b>
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<blockquote type=cite class=cite cite><font size=+0>When available I would
be pleased to have some figures of 500 to 2000 km</font>
<br><font size=+0>propagation.</font></blockquote>
<p><br><b><font size=+0>There are indications that at distances over 1000km
or so even at daytime some sky wave may be present, disturbing the measurement.
The sky wave will be weak of course, but so will be the ground wave.</font></b>
<p><b><font size=+0>73, Dick, PA0SE</font></b>
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