Saturday, 23 February 2019

Anomalous spots from the Canadian west.

An interesting few DX spots came in from the far west of Canada around midnight on 14MHz WSPR receive here.

The geomagnetic field was very quiet, never above Kp = 1, but undergoing a northwards Z deviation at very high latitudes, but was a southerly deviation at slightly lower latitudes:

Image: Tromso Geophysical Laboratory.

The timing is clearer in the Kiruna plot:


Auroral model at time of first spot from VE7PGB.  Image: NOAA/SWPC.

The spots, which at -25dB SNR/2500HZ or so are robust, are highlighted against the backdrop of otherwise very local 2E signals.  Once again, the anomalous spots seem to broadly coincide with a recovery to quieter conditions.  Note also the single spot of KA5UMD.

As is fairly usual, other than a couple of TF stations (interestingly, within the auroral oval), nobody else on the European dark side (or much of anywhere outside the US) heard VE7PGB, VA7PP or KA5UMD.


The geographic and geometric conditions at 23:56UT are depicted thus:

Image: DX Atlas, with permission.

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