Topband: Propagation

[Clive GM3POI]

    An even better way to assess all software is to 
go back in your log and take Qs that you made and 
plug those dates and data into the software. you'll 
be surprised how many times the QSOs were impossible 
by 100 dbs.
73 Clive GM3POI
----- Original Message ----- 
From: "Thomas F. Giella NZ4O" <nz4o at tampabay.rr.com>
To: "a Topband COL" <topband at contesting.com>
Sent: Wednesday, November 24, 2010 1:20 PM
Subject: Topband: Propagation


>I have found that the 160 meter propagation forecast 
>produced by
> VOACAP/VOAPROP is pretty accurate out to 
> approximately 4000 miles.
>
> Having said that Carl K9LA is correct in that there 
> is no accurate
> propagation prediction software for 160 meters, 
> especially on the really
> long paths. All propagation prediction software 
> operates from the principle
> of propagation conditions versus the MUF/OWF. For 
> 160 meters earth's
> magnetic field plays a very large role and 
> propagation software does not
> take this into account.
>
> However if you understand how and where the 
> geomagnetic field affects 160
> meter propagation then accurate forecasting is 
> possible. In part I base my
> MF radiowave propagation forecast section of my 
> weekly LF/MF/HF/6M radiowave
> propagation forecast at http://www.solarcycle24.org 
> on this principle.
>
> 73 & GUD DX,
> Thomas F. Giella, NZ4O
> Lakeland, FL, USA
> nz4o at tampabay.rr.com
>
> NZ4O Amateur & SWL Autobiography: 
> http://www.nz4o.org
> NZ4O Daily LF/MF/HF/6M Radiowave Propagation 
> Forecast:
> http://www.solarcycle24.org
>
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK