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Re: LF: Re: 9kHz noise level

To: [email protected]
Subject: Re: LF: Re: 9kHz noise level
From: Paul Nicholson <[email protected]>
Date: Tue, 02 Mar 2010 12:15:23 +0000
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Rik Strobbe wrote:
> Are the 3 red peaks between 10 and 15 kHz from the Russian
> Alpha navaid system ?

Yes, they're from the RSDN-20 'Alpha' system.  11.904761 kHz,
12.648809 kHz, and 14.880952 kHz.  These signals are quite strong
and the first two are useful for frequency calibration.

More info available here,

 http://www.vlf.it/alphatrond/alpha.htm

--
Paul Nicholson
http://abelian.org/vlf
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