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Tue, 06/16/2009 - 19:16
I'm looking at some 802.11b signal. What is causing those two distinct "drops" at arround +-10Mhz?
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I'm looking at some 802.11b signal. What is causing those two distinct "drops" at arround +-10Mhz?
Will you send me a recording
Will you send me a recording of this? Thanks!
http://rapidshare.com/files/
http://rapidshare.com/files/251684414/802.11b.wsr.html
The same thing happens with
The same thing happens with 1 of my routers.
sorry I meant +-5Mhz
sorry I meant +-5Mhz
My linksys runing open wrt
My linksys runing open wrt does it as well. I dont think there is anything wrong, just they way that radio works.
well I'm just curious about
well I'm just curious about what in the standard make the suposedly round curve got carved, wave shaping maybe.
I'm curious too. The 2
I'm curious too. The 2 linksys routers with DD-WRT I have don't do that, but the La Fonera with Openwrt I have does.
It could be the Atheros chipset, The linksys have Broadcom chipsets.
I'm not 100% clear on the
I'm not 100% clear on the technical details, but the notches in the spectral signature are characteristic to 802.11b transmitters. It seems to be a pattern generated by the DSSS modulation scheme. I have seen several references on the Internet, where researchers use these notches to recognize 802.11b networks when attempting to identify interfering transmitters.