Re: VLF: Carrier on 8270.00709 Hz

[Paul Nicholson <vlf0403@abelian.org>]

Jim wrote:

> do these results meet your standard criteria for confirmation?

Barely.  There was some cheating at my end.

Because the frequency is not known exactly I had to do some
fiddling to add the two days.  The fiddle was to rotate the
phase to align the phases of the two 8270.00709 Hz bins
before adding.

This effectively treats the noise as if it were signal.
This is why the coherent sum was 16 dB and the non-coherent
was 9 dB.

The trouble with this method is that, given enough days to
stack, I can raise a peak on any bin by rotating the noise
to add coherently in that bin.

For comparison, here is what the 25th looks like by itself:

 http://abelian.org/vlf/tmp/170828b.gif

I have received VO1NA before on this frequency, back in May:

 http://abelian.org/vlf/tmp/170508e.gif

--
Paul Nicholson
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