11-25-2006 04:08 PM - edited 07-03-2021 01:17 PM
Could you share the loss in typical office materials? e.g. fiber wool ceiling and dry wall, brick wall, concrete wall with metal inside.
Lok
Solved! Go to Solution.
11-26-2006 06:26 AM
Ho Lok,
Signal attenuation or signal loss occurs even as the signal passes through air. The loss of signal strength is more pronounced as the signal passes through different objects. A transmit power of 20 mW is equivalent to 13 dBm. Therefore, if the transmitted power at the entry point of a plasterboard wall is at 13 dBm, the signal strength will be reduced to 10 dBm when exiting that wall.Here some examples;
Plasterboard wall Signal Attenuation 3 dB
Glass wall with metal frame Signal Attenuation 6 dB
Cinder block wall Signal Attenuation 4 dB
Office window Signal Attenuation 3 dB
Metal door Signal Attenuation 6 dB
Metal door in brick wall Signal Attenuation 12 dB
Human body Signal Attenuation 3 dB
From this good site survey doc;
Hope this helps!
Rob
Please remember to rate helpful posts.....
11-26-2006 06:26 AM
Ho Lok,
Signal attenuation or signal loss occurs even as the signal passes through air. The loss of signal strength is more pronounced as the signal passes through different objects. A transmit power of 20 mW is equivalent to 13 dBm. Therefore, if the transmitted power at the entry point of a plasterboard wall is at 13 dBm, the signal strength will be reduced to 10 dBm when exiting that wall.Here some examples;
Plasterboard wall Signal Attenuation 3 dB
Glass wall with metal frame Signal Attenuation 6 dB
Cinder block wall Signal Attenuation 4 dB
Office window Signal Attenuation 3 dB
Metal door Signal Attenuation 6 dB
Metal door in brick wall Signal Attenuation 12 dB
Human body Signal Attenuation 3 dB
From this good site survey doc;
Hope this helps!
Rob
Please remember to rate helpful posts.....
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide