Anyone who have come across tests where ranges of wireless access points are compared? They might all deliver 100 mW, but it is highly variable how far they reach.
Thanks, Knud
range
May 28, 2006
2 Replies
"og54" hath wroth:
The typical access point belches about 35mw (15dBm). Some can do
100mw (20dBm). A 6dB power increase is good for twice the range. 12 dB is good for 4 times the range. Etc. The power increase has to be at both ends or you don't get any increased range.The range is large determined by the antennas at both ends, the level of local interference, and the amount of obstructions in the line of sight path.
For fairly conventional access points and laptops, with the stock antennas, Intel did some indoor range testing. See: | ftp://download.intel.com/business/bss/infrastructure/wireless/deployment/hotspot.pdf Search the PDF for the word "Range". There are several tables. I strongly recommend reading the entire document as it gives a good basic technical presentation of how wireless works.
Part of the range table is duplicated in the FAQ at: |
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think the ranges are a bit optimistic, but should be achievable with decent hardware (i.e. not junk).
As for what can be achieved, see: |
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a 125 mile link.
[POSTED TO alt.internet.wireless - REPLY ON USENET PLEASE]
ftp://download.intel.com/business/bss/infrastructure/wireless/deployment/hotspot.pdf
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