Since I am not a scientist and only a steamboat engineer of sorts
(that's what they call someone who works at the controls in a radio
station playing music) I offer my own version of the TB Spotlight
theorem. TB spotlight propagation I equate to a unique or magic closet
where although there may be some light need the crack near the floor for
stations closer by when the door is shut the room is dark. Things really
happen when the door is even partially ajar. As the door swings in the
breeze the paths, often more than one of them, can come and go very
rapidly. But the door has several hinges and where one side opens the
other side which was previous opened may slam shut. Light arrives at
different angles and behind the hinge there is little light at all.
These hinges can be propagation-wise from the top of the door to the
bottom and in reverse.....or side to side.... never illuminating the
closet completely for everyone to bask in the bright glow of a
"propagation" light simultaneously. I know that this may seem foolish
and over simplistic to some but this "spotlight" propagation is as weird
as my attempts to try to understand it. If you were not at one of the
locations where the signals were refracted down to...other than checking
what you have for best performance...it might me as good or better as
the TBers 25-50miles away. One thing that did appear as a valid
conclusion is that the spotlight openings were reciprocal or enhance in
both directions at a particular time. I say this because did not
experience any spotlight impact from NA stations. In fact what was
unusual was that rock crushing signals here were pass over for weaker
signals here by VP8STI. Sometimes much weaker signals n the same
frequency got through first rather than the well endowed super stations.
Just an observation before you tear up your antenna(s) for TB and move
to a cabin in the mountains.
Herb Schoenbohm, KV4FZ
On 1/23/2016 3:13 PM, Jim Brown wrote:
On Fri,1/22/2016 1:08 PM, K1FZ-Bruce wrote:
Just my observations from what happened here last night in NY
(doesn't help you west coast guys, I guess).
You guess right, although topband "spotlight" propagation scattered a
handful of Qs west of the Rockies. Over our heads into the Pacific NW,
and WB6RSE made it from LAX. I've still not heard a peep.
73, Jim K9YC
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