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amdx · May 1st 08, 06:17 PM posted to rec.radio.amateur.homebrew,sci.electronics.design

"_" wrote in message
...
...and if so what can I do about it?

I have a cobbled-together setup that almost works. I coach swimming, and
I
have a small video gadget that links to a Tivo and a TV via one of those
video transmitters that you can get from ebay. I think it is a 1.2 gHz
50mw version.

The kids swim and then watch, and having the Tivo means there's a
continuous flow of action. The problem is that the picture quality is
bad.
I'm only 20 metres away and there is a direct line-of-sight from
transmitter to reciever - ocassionally with a body or two in the way; but
even without, there is considerable jumping and colour distortion and
generally a bad picture. If I stand still at just about any distance I
can
find a place that gets a good picture, but moving - even turning - makes
it
change.

The ceiling and the upper half of the inside walls of the pool are
panelled
with strips of aluminium sheathing - about 6 inches wide and 20 or more
feet long. These are separated by about a 1-inch gap along the long
edges,
and mounted to a framework (which is mounted to concrete) with some sort
of
clip arrangement. This is a box about 220 feet long and 25 feet high.

What's the best guess for improving the picture? More power? Different
frequency? Antenna mounting (I could wear a beanie with it sticking up
from the top - that'd be cool)?

No beanie but, http://www.detroitatvrepeater.com/rcplane.htm
Mike