Kris N5KM asked about greyline propagation predictions. Since his question
was posted to the topband reflector, I assume he's only asking in relation
to 160-Meters.
We do not have any reliable propagation predictions for greyline on 160m.
In fact, we really don't have any reliable propagation predictions for any
time on 160m. In other words, we do not know in advance what night is going
to be good and what night is not going to be good.
The best thing to do is know the common darkness times between you and your
target, and know sunrise and sunset times at both ends of the path. Make
sure you're on when it's dark and make sure you're on around the
appropriate sunrise/sunset times.
I agree that it would be nice to know when 160m is good, but we're simply
not there yet. My guess is we will not even see this in our lifetimes as
there is no continual data being taken in the lower ionosphere to gives us
clues as to what's going on.
So get on and enjoy the magic of topband when it happens.
Carl K9LA
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