Topband: PT0S TB Summary

Jim Brown jim at audiosystemsgroup.com
Fri Nov 30 13:00:46 EST 2012


On 11/30/2012 7:44 AM, GeorgeWallner wrote:
> * On several nights there was absolutely no propagation between our SS 
> (around 1945 Z) and until about 2100 Z, when the band would suddenly 
> open to EU with decent conditions. During these times, we often heard 
> EU stations working each other but they never heard us.

Hi George,

This apparent "one way propagation" is quite common here, especially in 
the two hours or so before our sunset -- I hear MANY stations from W8, 
W9, W4, VE3, even W3, but they don't hear me. W8JI and others have 
convinced me that a large part of the reason is the difference in our 
noise levels -- stations to the east have more propagated noise.  But 
I'd be interested to hear from K9LA if there might be other mechanisms 
at play.

Yes, propagation as observed here varied significantly from one night to 
another, but your signal was nearly always better than I had expected.

Thanks for a great expedition.  You continue to be one of my heroes.

73, Jim K9YC


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