Ubee DDW3611 Configuration And Troubleshooting Manual page 19

Signal Attenuation and performance drops can result when the wireless signal is absorbed by an object or material,
or as the wireless client moves farther away from the Wireless Gateway. The table below illustrates rule of
thumb attenuation for different kinds of materials.
Material
Interior drywall
Cubicle wall
Wood door (hollow - solid)
Brick / Concrete wall
Glass / Window (not tinted)
Double-pane coated glass
Bullet-proof glass
Steel/fire exit door
Human Body
Free Space
Tree (est)
Sources: Furr, Oak Ridge National Labs, 2008, and IEEE
Attenuation (dB)
2.4 GHz
3-4
2-5
3-4
6-18
2-3
13
10
13-19
3
.24/ft
.15/ft
| Ubee Interactive 2011
5 GHz
3-5
4-9
6-7
10-30
6-8
20
20
25-32
6
.5/ft
.3/ft
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