> what are the scribbles at 8270Hz to be seen in
> your grabber ?

 http://abelian.org/vlf/fbins.shtml#p=1453125600&b=080&s=sp

The phase jumping around,

  2016-01-18_00:00:00    -22.7 deg
  2016-01-18_00:10:00     92.3 deg
  2016-01-18_00:20:00    100.5 deg
  2016-01-18_00:30:00     91.7 deg
  2016-01-18_00:40:00   -122.6 deg
  2016-01-18_00:50:00   -131.1 deg
  2016-01-18_01:00:00     47.0 deg
  2016-01-18_01:10:00     58.5 deg
  2016-01-18_01:20:00     69.6 deg
  2016-01-18_01:30:00     64.1 deg
  2016-01-18_01:40:00     54.5 deg
  2016-01-18_01:50:00   -128.7 deg
  2016-01-18_02:00:00     17.4 deg
  2016-01-18_02:10:00    130.4 deg
  2016-01-18_02:20:00   -174.3 deg
  2016-01-18_02:30:00   -166.6 deg
  2016-01-18_02:40:00    153.0 deg
  2016-01-18_02:50:00    144.5 deg
  2016-01-18_03:00:00    -50.5 deg
  2016-01-18_03:10:00    -33.5 deg
  2016-01-18_03:20:00    -34.5 deg
  2016-01-18_03:30:00    109.2 deg
  2016-01-18_03:40:00   -162.1 deg
  2016-01-18_03:50:00   -118.3 deg
  2016-01-18_04:00:00   -116.7 deg
  2016-01-18_04:10:00     58.6 deg
  2016-01-18_04:20:00     46.6 deg
  2016-01-18_04:30:00    112.0 deg
  2016-01-18_04:40:00   -148.8 deg
  2016-01-18_04:50:00   -146.6 deg
  2016-01-18_05:00:00   -177.3 deg
  2016-01-18_05:10:00   -152.3 deg
  2016-01-18_05:20:00   -147.8 deg
  2016-01-18_05:30:00   -143.6 deg
  2016-01-18_05:40:00     16.8 deg
  2016-01-18_05:50:00    -12.5 deg

--
Paul Nicholson
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