[SECC] Wall mount needed

[thompson at mindspring.com (David L. Thompson)]

I have a light weight 4 el 6 meter beam that I plan on putting on a 30 foot
mast attached to the chimney.  I have the TV size wall mount but need the
larger size for 1 3/4" (the TV type from Radio Shack only goes to 1 1/4").
I looked through all my catalogs and no longer see anything but the TV type.
Rohn and GC made them and I don't want to go to Ack Radio unless I have to
as its up to me to look through their pit.

Ideas welcome.
Dave K4JRB