Panasonic KX-TDA50 installation manual Object Material Transmission Tendency

2.7 Connection of 2.4 GHz Portable Stations

Object	Material	Transmission Tendency
Wall	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.
Window	Glass	Radio waves usually penetrate them.
	Glass with wire net	Radio waves can penetrate them, but tend to be reflected.
	Glass covered with	Radio waves are weakened considerably when they penetrate
	heat-resistant film	windows.
Floor	Ferroconcrete	Radio waves can penetrate them, but the more iron there is,
		the more radio waves are reflected.
Partition	Steel	Radio waves are reflected and rarely penetrate them.
	Plywood, Glass	Radio waves usually penetrate them.
Column	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.
Cabinet	Steel	Radio waves are usually reflected or diffracted, and rarely
		penetrate them.
	Wood	Radio waves can penetrate them, but they are weakened.

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