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LF: MF High stability transmissions

To: [email protected], [email protected]
Subject: LF: MF High stability transmissions
From: Andy Talbot <[email protected]>
Date: Sun, 1 Nov 2015 11:35:18 +0000
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Sender: [email protected]
I'm testing out a coherent receiver for LF  and looking for something of air that WILL show an ionospheric effect from time to time.  So looking for a station transmitting with an Rb or Cs controlled transmission between 200kHz and 500kHz. 
My Rx is Low Pass filtered to 500kHz so nothing above that

At the moment, using Radio 4 Droitwich, and MSF 60kHz the trace can be held on screen absolutely stationary for hours on end,  but those are a bit boring to look at continuously :-)  So I'd like to have something else to monitor and demonstrate that will show a slight wander at certain times of the day.

Is there anything around?  All the NDB signals I've tried are unstable and their frequency wanders

Andy  G4JNT
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