[TowerTalk] Rohn SSV Tower

[WZ8P]

Need some help:

I have a lot of Rohn SSV tower and would like to put up a new tower
for a full size 3 ele 40 meter beam.

I do live on some what of a hill.

I was considering 80' 100' or 120 ft. What difference will I see from 
these heights?

Thanks,
Everett WZ8P