Re: Question regarding Madwifi signal strength



On Fri, 2007-06-08 at 10:21 -0400, Dan Williams wrote:
> On Sat, 2007-06-09 at 00:11 +1200, Simon Geard wrote:
> >     00:17:9A:12:31:72 : Quality=49/70  Signal level=-46 dBm  Noise
> level=-95 dBm
> 
>                                   ^^^^ This looks wrong
> 
> Quality is supposed to be a linear value between 0 and max_qual.qual
> inclusive.  49/70 = 70%; and with a signal of -46dBm and a noise of -95
> dBm, that seems bogus.  It should be higher than that.  -46 dBm is
> _really good_.
> 
> >     00:14:7C:AD:39:92 : Quality=120/70  Signal level=-256 dBm  Noise level=-95 dBm
> 
>                                   ^^^^ This is wrong
> 
> A value of 120 is clearly outside the bounds of 0, 70.

I've actually seen *positive* dBm values reported by the drivers before,
so yeah, not very good.

Simon.

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