Topband: Polar Cap Absorption On 160

[KN4LF, Thomas Giella]

KN4LF Thomas Said:
.....The SE-S signal skewing is the result of the transmitted signal taking
the propagation path of least resistance/absorption on a longer lower
latitude path, away from proton absorption and the higher gyro frequency
absorption.

KN4LF Thomas Now Says:
I wasn't talking in a present sense, at this particular moment, now, etc.
concerning proton absorption on high latitude 160 propagation paths. I was
talking about the possible occurrence on any day in the future while the JT
is active. However there actually has been a polar cap absorption event
during the past four days and it is still occurring in a minor way, though
it's almost at an end. See it at: http://sec.noaa.gov/rt_plots/pro_3d.html .
Anytime the proton level is 10 mev or higher absorption takes place on 160.

73,
Thomas Giella, KN4LF