2.4 GHz Signal Attenuation
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| Or... Location, location, location! |
Using the antenna for a free sight 'point to point' connection:
Optimal results will be obtained using antenna at both sides (access point and client), with line of sight.
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Sensibility to reflections:
Rotating radio waves are reversed in rotating direction after reflection by buildings, etc. As WLAN is sensitive for delay spread that could be caused by reflections, a helix antenna is the best choice for moderate point to point connections. |
Through walls and floors:
Attenuation is roughly estimated to 6 dB through ordinary walls; concrete floors do 10 to 30 dB. At this rate, you will soon be 'out of range' between building floors. |
2.4 GHz Signal Attenuation Chart
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| Window, Brick Wall |
2 dB |
| Metal Frame Glass Wall Into Building |
6 dB |
| Office Wall |
6 dB |
| Metal Door In Office Wall |
6 dB |
| Cinderblock Wall |
4 dB |
| Metal Door In Brick Wall |
12.4 dB |
| Brick Wall Next To Metal Door |
3 dB |
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