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TopBand: Why is a duct?

To: <topband@contesting.com>
Subject: TopBand: Why is a duct?
From: donovanf@sgate.com (Frank Donovan)
Date: Thu, 3 Jul 1997 16:05:57 -0400 (EDT)
Another example of very selective propagation is JA-to-East Coast on 160.
The window starts in New England at their sunrise and moves southwest from
there.  When the W1s are working the peak of the opening we cannot hear
the JAs at all, then 10 minutes later they can be S9 (more likely S6
tho...)
73!
Frank
W3LPL
donovanf@sgate.com

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