I've no real experience of putting up antennas on the chimney of a house.

Obviously, I must not overload the chimney breast.

I think your antenna plan is workable.

At one qth I had up a 2 element 10m yagi and a 5 el 2m yagi on a chimney
mount. Replaced those with a 2 el 15/10 quad for a while.

This was with a Radio Shack chimney mount. Just the chimney mount by
itself was too flimsy. I found that it was necessary to add a set of
guys, attached just below the rotator and running to the roof
corners. The guys made the whole thing much more secure and took some
of the windload off of the chimney.

Torsten
N4OGW

I've no real experience of putting up antennas on the chimney of a house.

I have seen chimeys come down in severe wx with just large TV antennas on
them. I guess it would be dependent not only on the structural integrity of
the chimney but also physical size but I certainly would be careful. I
don't know your particulars but wouldn't it be better to have something
bolted on the side of the house even with the insurance issues????

Good Luck and God Bless Tom KI3R

"R. Torsten Clay" wrote in message
...
This was with a Radio Shack chimney mount. Just the chimney mount by
itself was too flimsy. I found that it was necessary to add a set of
guys, attached just below the rotator and running to the roof
corners. The guys made the whole thing much more secure and took some
of the windload off of the chimney.

Torsten
N4OGW

What I did was to use a 10 foot Al pipe, and extend it all the way down to
the roof. This was on the inside downslope side of the chimney. I fastened
the pipe to the roof with a RS roof mount. This gave me a longer moment
arm, and took the vertical weight off the chimney. I have a rotor and 18 el
M2 432 antenna on it, about a foot above the rotor. Smaller than a large TV
antenna.

I would not do remotely what has been suggested here.

Tam/WB2TT