[TowerTalk] source for propagation data?

[Jim Lux]

At 10:45 AM 7/2/2004 -0700, Rick Karlquist wrote:
>Jim Lux said:
>.
> >
> > If I have two small antennas separated by, say, 100 meters, looking at a
> > sky wave signal, how decorrelated are they? Over frequency?
> >
>
>I've observed that 2 verticals on 20 meters 800 feet apart
>fade in and out independently.
>
>Rick N6RK

Over what sort of time span... tenths of seconds, seconds, or minutes?

And, are the patterns of the two antennas comparable (i.e. you've got them 
out on that dead flat area in Galt) so you're looking at skywave variation 
on different paths, as opposed to the same wave going in and out of nulls 
on the antennas?
(I've noticed the latter with two crossed dipoles in the same location)