kapara
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Understanding SNR Signal to Noise Ratio on Netstumbler.
I would like someone to explain to me how SNR can tell me which AP provides the best signal strength. Ex. I have to AP's.
AP1 has: SNR: 36 Signal -52 Noise -100 SNR+ 48
AP2 has: SNR: 36 Signal -62 Noise -100 SNR+ 38
I would like to understand what is the optimal state I am looking for.
Thanks
AP1 has: SNR: 36 Signal -52 Noise -100 SNR+ 48
AP2 has: SNR: 36 Signal -62 Noise -100 SNR+ 38
I would like to understand what is the optimal state I am looking for.
Thanks
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The reason I want to know is I have to get 2 wireless bridges pointing at each other from 1 mile away. They are currently working but I have a feeling that they are not positioned for the best possible reception. I was thinking of taking a wifi card with an external antenna and position it in front of Bridge 1 and tring to change the position to find the best reception.
Thanks
Thanks
If you can actually measure, it is well worth doing. Some commercial wi-fi units have built-in diagnostics to do this.
Hi,
Theoretically, you should have equal signal levels on each end (that is the -52 and -62 bit) - All is not fair with wireless though, most cards have a sensitivity of up to -90dbm (-95dbm if you have a good chipset!) so you have plenty of headroom for weather factors to come into play.
Any signal level between -50 and -70 is good, anything lower and you'd want to either look at alignment / antenna size.
Rgds,
Rob
Theoretically, you should have equal signal levels on each end (that is the -52 and -62 bit) - All is not fair with wireless though, most cards have a sensitivity of up to -90dbm (-95dbm if you have a good chipset!) so you have plenty of headroom for weather factors to come into play.
Any signal level between -50 and -70 is good, anything lower and you'd want to either look at alignment / antenna size.
Rgds,
Rob
Thanks kapara,
--Rob
--Rob
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