Re: VLF: field strength as a function of frequency curve...

[Scott Tilley <sthed475@telus.net>]

Hi Stefan/group

This looks it may be the link or at least a very interesting one:

http://www.navy-radio.com/manuals/0101-1xx/0101_113-02.pdf

73 Scott
VE7TIL

On 4/13/2011 5:28 AM, Stefan Schäfer wrote:
> VLF,
>
> Am 12.04.2011 23:30, schrieb Stefan Schäfer:
> > VLF,
> >
> > I've just got these graphs by a SWL (or better LWL) out of an unknown 
> > paper.
> Now i've got the URL for this document:
>
> www.navy-radio.com/manuals/0101-1xx/0101_113-06.pdf
>
>
> 73, Stefan/DK7FC
>
>
>
> > It shows the results of field strength achievements as a function of 
> > the TX frequency for different distances and a given TX power.
> > Have we all known about this? Me not ;-) Now i understand why the 
> > military stations are located mostly between 15 and 25 kHz...
> > But 8970 Hz is not much worse, at least distances below 4000 km...
> >
> > But that graph tell me it is rather difficult to reach TF3HZ or 4X1RF 
> > on 5170 Hz. Anyway we'll see...
> > 73, Stefan/DK7FC