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Aw: VLF: HWU dual frequency?

To: [email protected]
Subject: Aw: VLF: HWU dual frequency?
From: LZ <[email protected]>
Date: Thu, 13 Mar 2014 20:14:49 +0100
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Marcus,
 
You wrote: 
> ...
> I wonder if they are using the same antenna for both carriers, 
> ...

Are you sure? Diurnal patterns from Kiel VLF Grappa look quite different:
http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=14-03-12&freq=21.7KHz
http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=14-03-12&freq=18.3KHz

Laura

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