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| To: | rsgb_lf_group@blacksheep.org |
|---|---|
| Subject: | Re: LF: VLF propagation (continued..) |
| From: | Paul Nicholson <vlf0308@abelian.org> |
| Date: | Sun, 25 Apr 2010 08:01:59 +0000 |
| In-reply-to: | <4BD35EDA.2040408@toya.net.pl> |
| References: | <Pine.LNX.3.95.1100316055048.250B-100000@noname.nodomain.nowhere> <4B9FD008.2070607@abelian.org> <4BAAA535.4050401@toya.net.pl> <4BAB1E85.1060304@abelian.org> <4BABA614.4030303@abelian.org> <4BD35EDA.2040408@toya.net.pl> |
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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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