I had the antenna installer back out. He raised the antenna by about 5.5' (see photos). Voila! Excellent reception, including WSBK and WLVI. Only very isolated pixilation has been observed since then. (Note: he originally raised it by 5', but it was found that 5.5' reduced pixilation even more)
OK great! But I now fear another problem. The antenna is unsupported by guy wires and I saw it swaying in the wind a few inches when the winds were about 16 MPH. I fear that the pole will snap or, even worse, become a projectile during a major windstorm.
I believe that the installer said that he has a 1.5" pole inserted about 4.5' into the originally-installed 2" pole. The supports attached to the condo are very solid wood so I'm not concerned about the supports popping out. The installer said that 4 points would be needed for guy wires (and didn't put in any), we probably really only have two points (?) available, both on the roof. The adjacent trees certainly can't be used as they sway even more than the antenna.
I'm afraid that I'll have to get guy wires installed. The expenses are beginning to add up to where I probably should've stayed with Comcast
Is it agreed that I'd better either get guy wires installed, OR lower the antenna and put up with worse reception? Thanks, this forum has been helpful to me, especially from rabbit73!