AT&T 8000 Signal must pass through several outer walls, Wire lath in plaster walls, Insulation

BUILDING CONSTRUCTION CONSIDERATIONS

Although the 40.68 MHz band is relatively immune to most small metal objects in the home or installation site, some house have building materials that must be taken into consideration. Often, it is a combination of several of these factors that cause problems.

Some problems to watch out for.

.	Concrete and brick with metal reinforcement
	Large amounts of concrete and brick can be
	troublesome, particularly in "L" - shaped homes where
	the signal must pass through several outer walls.
	Wire lath in plaster walls
.	Insulation
.	Foil-backed insulation placed in inner walls may reflect
	RF transmissions
.	Foil-backed wallpaper or large mirrors
.	Stucco walls
	Stucco is applied to a wire mesh base that may cause
	problems, especially in "L" - shaped homes.

How to avoid these problems:

. Don’t mount the Central Controller on a wall that contains metal, lath, or stucco mesh.

Remember, it’s critical that you identify sources of possible RF interference and potential blocks to RF waves.

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