Re: ULF: New carrier near 2970 Hz...

[Paul Nicholson <vlf0403@abelian.org>]

I wrote:

> So far, still not a trace here.

Well, now perhaps a hint of a signal. Only 3 sigma
so not much but is interesting because it's on the
right frequency and only present in E/W loop and
E-field.

I gave up doing long narrow integrations and tried
stacking various parts of the day.

The 'hint' appears when I stack 10:00 to 18:00 UT
each day.

Also the phase angle between E-field and E/W loop is
unusual but it is so weak it is hard to be sure.

I'll work on trying to resolve this better.  It will
either improve if real, or vanish if not.

Quite a steady signal at Bielefeld, day and night:

In 23.15 uHz (12 hour Fourier transform)

Days, 06:00 to 18:00 UT

 2017-03-11 11.3 dB
 2017-03-12 11.2 dB
 2017-03-13 11.5 dB
 2017-03-14 10.1 dB
 2017-03-15 16.3 dB
 2017-03-16 12.3 dB
 2017-03-17 11.6 dB
 2017-03-18 15.2 dB
 2017-03-19 15.6 dB

Nights, 18:00 to 06:00 UT

 2017-03-10/11  11.4 dB
 2017-03-11/12  15.8 dB
 2017-03-12/13  16.0 dB
 2017-03-13/14  13.6 dB
 2017-03-14/15  15.8 dB
 2017-03-15/16  15.0 dB
 2017-03-16/17  12.3 dB
 2017-03-17/18  11.6 dB
 2017-03-18/19  14.3 dB
 2017-03-19/20  10.9 dB

--
Paul Nicholson
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