Photos of my CM4228HD antenna attached to the fascia board of my unit.
Of the ~ 245 SSO HOA units, one (1) has shade trees planted (mine).
The roof behind is effectively a metal one blocking any multipath from the east and silencing the antenna(s) in the attic.
The trees in the path to Sutro still have some leaves on and the picture was taken January 8, 2013.
I can remember coming home the last Friday in November to rake the leaves ~ 1973.
Those trees moving strongly one noon made KTVU and KPIX unwatchable and finally alerting me that trees with wet leaves may be the cause of some of my reception problems.
The little lobe at ~ 90 degrees of the CM4228HD is just in the right direction for KTEH and KPIX.