To: <topband@contesting.com>
> Date: Fri, 27 Mar 1998 17:59:47 -0500
> >To my mind, most computer propagation programs are USELESS for predicting
> >optimum times for LOW BAND propagation, especially the Sunrise and
> >Sunset
> >enhancements.
> Agreed on both counts!! I run GeoClock all the time in the shack.
I would like to ask a question.
What do people mean by a "duct"?
When I read some of the comments, it appears a duct is credited
for signals "focusing" in one area and no (or very very little)
signal appearing elsewhere, even a few hundred miles away.
So am I correct in assuming a duct should create a no signal zone,
where stations only at the opening of the "duct" hear the signals???
Is that correct, or do I misunderstand how a "duct" is supposed
to appear to us?
73, Tom W8JI
w8ji.tom@MCIONE.com
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