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Appendix E. Signal Loss for Obstacle Types

Obstruction

Additional Loss (dB)

Effective Range

Open space

0

100%

Window (nonmetallic tint)

3

70%

Window (metallic tint)

5–8

50%

Light wall (drywall)

5–8

50%

Medium wall (wood)

10

30%

Heavy wall (15 cm solid core)

15–20

15%

Very heavy wall (30 cm solid core)

20–25

10%

Floor/ceiling (solid core)

15–20

15%

Floor/ceiling (heavy solid core)

20–25

10%


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