On Tue, 19 Jun 2007 18:50:59 -0400, "merlin-7"
wrote:

Would simple aluminum foil work?

Hi Joe,

Sure, but bonding one sheet to the next overlapping one might "foil"
your goal. Few of us with dominant Y genes realize that aluminum foil
is wax (an insulator) coated on one side.

If so what frequency range could I expect it to work in?

Most. Depends on the gaps. Staple it every inch, and it may work
from LF to VHF.

I know there is a term for a room like this but I can not rember it..faraday
chamber?

Farady shield, room, chamber....

The shack will be 12 foot by 16 foot, right next to my 60' tower, with HF
and 2m antennas on it. I have no idea how they will interact with such a
building...

Are you doing the windows and doors too? Most doors have a gasket of
fringed fingers making contact with the conductive door.

You need to choke EVERY wire penetrating the walls. Any exception and
your room will fill like an RF gong.

73's
Richard Clark, KB7QHC