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Posted by:dragorn
Subject:dBm/RSSI measurements related or separate?
Date:17:45:04 21/02/2010

> > > Hi
> > >
> > > I am doing some signal strength measurements in Kismet, and was wondering whether the dBm value reported by Kismet is somehow dervied from the RSSI or signal strength percentage readings, or if it a seperate measurement recieved from the wireless NIC?
> > >
> > > The reason I'm asking is that I have a feeling RSSI (and thus percentage) values are not precise enough for my project.
> > >
> > > Thanks,
> >
> > RSSI must be converted to dBm to be meaningful.
> >
> > When all you have is RSSI, it's not a useful number. If kismet reports RSSI it's because the drivers don't report dbm and there is no known conversion.
> >
> > -m
>
>
> Kismet reports dBm - I'm just curious as to whether this is actually dBm or if it is some sort of approximation connected to RSSI?
>

It's whatever the driver reported as being dBm. It's likely to be completely bogus.

-m


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