That is exactly what I was looking for thanks, I used the formula and it is telling me that only 3 more kW and I should have the coverage I need from my CBS affiliate.

Which shoud be a moot point come deadline day as they said they will be increasing well more than 3kW. Of course a upgraded anteanna would help with db loss, but from what I am seeing and hearing, I am good to go as I get all the rest just fine, just needed some info for the CBS problem.
I found a couple sites with apps to use that formula. They even mapped a satellite image of my area with terrain effects somewhat taken into account.
I am so close to locking the signal, I figure i didn't need much and during the right conditions, I can lock, but not aquire PSIP info.
Reminds me of the days in my parents house where on a overcast night, we could pick up CBC OTA, but not on sunny days.
All I needed was some info on where to look. Much easier when you have the name.