Re: VLF: 300 mA on 4470 Hz, 67 km band

[DK7FC <selberdenken@posteo.de>]

Hello Paul,

Thanks again for the recent summaries.

Am 21.01.2018 13:31, schrieb Paul Nicholson:
> The average S/N so far at this frequency is distinctly better
> than at 5170 Hz.
>
> Todmorden: 5170 Hz -28.1 dB/1Hz;
>            4470 Hz -26.5 dB/1Hz;
>
> Cumiana: 5170 Hz -31.0 dB/1Hz;
>          4470 Hz -26.2 dB/1Hz;
Yes, it seems to confirm the assumption that frequencies arround 4 kHz 
work quite well in 'short' ranges, maybe < 2000 km, because the far QRN 
is much more attenuated than on higher or lower frequencies. A typical 
nightly noise distribution capture is in attachment..
Relative to 5170 Hz, my ERP is 1.26 dB lower on 4470 Hz.
67 km wavelength, amazing. I like it!
Today Alex will go to the garden again, he said...

73, Stefan

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