RE: 800mw camera?
Hey, long time no see.
Well, without getting into the frequency issues which I am sure you have already seen posted to death here, that type of system works pretty well for what they cost.
My father and I have tested that type of setup both in glow and slope and it worked well.
Not going to get the range and image quality of a 2.4ghz BWAV type system with a CCD camera but they do work pretty good.
MUCH better than those "all in one" setups.
In this [link=http://fubar1.net/movies/wireless/SysCompHiRes.wmv]VIDEO[/link] I am comparing several systems, one of which is identical to the one you are asking about. I have it stuck on two different planes.
One thing I learned is you need some kind of lens hood or visor to protect the camera from glare or you get a weird purple haze across the bottom of the view.
Hope this helps.