Panasonic KX-TDA100 Installation Manual page 146

2.9 Connection of 2.4 GHz Portable Stations
Object
Wall
Window
Floor
Partition
Column
Cabinet
146 Installation Manual
Material Transmission Tendency
Concrete The thicker they are, the less radio waves
penetrate them.
Ferroconcrete Radio waves can penetrate them, but the more iron
there is, the more radio waves are reflected.
Glass Radio waves usually penetrate them.
Glass with wire nets Radio waves can penetrate them, but tend to be
reflected.
Glass covered with Radio waves are weakened considerably when
heat-resistant film they penetrate windows.
Ferroconcrete Radio waves can penetrate them, but the more iron
there is, the more radio waves are reflected.
Steel Radio waves are reflected and rarely penetrate
them.
Plywood, Glass Radio waves usually penetrate them.
Ferroconcrete Radio waves can penetrate them, but the more iron
there is, the more radio waves tend to be reflected
or diffracted.
Metal Radio waves tend to be reflected or diffracted.
Steel Radio waves are usually reflected or diffracted,
and rarely penetrate them.
Wood Radio waves can penetrate them, but they are
weakened.