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To: [email protected]
Subject: Re: LF: NA VLF
From: Paul Nicholson <[email protected]>
Date: Sat, 13 May 2017 05:40:39 +0000
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Joe wrote:

> In the mean time, the ERP is up by 2 dB ...

The signal overnight 11th/12th reached about 0.085 fT,
the best signal strength so far.  Was that due to
the increased ERP or propagation.   The noise was high
that night too.

Overnight 12th/13th I cannot see the signal in my usual
6 hour integration.   A bit of a spike at 8270.008435
but that's not a frequency your divider would allow.

I've been looking at the signal at Forest.  The peak is
visible on the first two nights but not since (or before).
It is also visible in the raw recording at the receiver site.
But the frequency is different.  After a careful look at it,
the spectrum is peaking at close to 8270.007 + 20 uHz, on
both nights.  This doesn't agree with the frequency measured
at Todmorden, which started out around +46 uHz and settled
by the next night at +93 uHz.

Because of this frequency offset, we must for now discount
the detection at Forest.  Hopefully we will get it back
with a boost to ERP.

Paul Nicholson

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