Signal sensitivity problem with if_rum

Gustau Pérez gperez at
Thu Apr 30 06:34:19 UTC 2009

>  I think this is right place to post, if it is not, please let me know.
>   I'm experiencing problems with two different devices using if_rum. 
> One is a Hercules Guillemot and the other is a Linksys Cisco WUSB54GC
>  The first one is about sensitivity, which is very low: for example, 
> I'm detecting just two or three networks around me (with windows them 
> detect around 14 or 15 networks) and the reported signal is very low. 
> Placing the sensor very near to my wireless network AP (which is a 
> FreeBSD machine with atheros card placing the txpower to 20) reports a 
> signal quality of 50% or 60%.

   Hi again,

   Any clue ? Can anyone point me where to start looking ? I've been 
looking in /usr/src/sys/dev/usb/wlan/if_rum.c (and friends) ...



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