On Tue, 21 Jun 2011 12:45:19 -0400,
(---MIKE---) wrote:

Let me explain why I want this. I have two dishes for the Dish network.
They have been working well for about ten years. The dishes are aimed
through a hole in the trees. The problem is that the trees are growing
and I would like to determine when I can expect tree branches to block
the signal (and what I have to do if it happens). I would like to aim a
tool at the satellite and be able at the same time to see the nearby
tree branches. Possible?

I am told if you reverse polarity on your dish, the flames that shoot
out will clear the path for the signal again.