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| 3.9 Connection of DECT Portable Stations | |
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| Object | Material | Transmission Tendency |
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| Wall | Concrete | The thicker they are, the less radio waves |
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| penetrate them. |
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| Ferroconcrete | Radio waves can penetrate them, but the more iron |
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| there is, the more radio waves are reflected. |
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| Window | Glass | Radio waves usually penetrate them. |
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| Glass with wire net | Radio waves can penetrate them, but tend to be |
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| reflected. |
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| Glass covered with heat- | Radio waves are weakened considerably when |
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| resistant film | they penetrate windows. |
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| Floor | Ferroconcrete | Radio waves can penetrate them, but the more iron |
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| there is, the more radio waves are reflected. |
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| Partition | Steel | Radio waves are reflected and rarely penetrate |
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| them. |
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| Plywood, Glass | Radio waves usually penetrate them. |
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| Column | Ferroconcrete | Radio waves can penetrate them, but the more iron |
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| there is, the more radio waves tend to be reflected |
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| or diffracted. |
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| Metal | Radio waves tend to be reflected or diffracted. |
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| Cabinet | Steel | Radio waves are usually reflected or diffracted, |
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| and rarely penetrate them. |
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| Wood | Radio waves can penetrate them, but they are |
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| weakened. |
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