From: Tiebing Zhang (tzhang_at_3eti.com)
Date: 2002-07-03 13:41:45 UTC
I am using a PC card on my laptop, and it returns value from -24dBm to
-80dBm. The closer I am to an AP, the smaller the numbers(abs value)
go. I did not test this with any MiniPCI card.
--Tiebing
On Tue, 2 Jul 2002, Gerald Britton wrote:
> On Tue, Jul 02, 2002 at 03:00:44PM -0400, Tiebing Zhang wrote:
> > This is what in the driver:(well, the driver uses +0x100 instead of *(-1))
> >
> > #define LEVEL_TO_dBm(v) (((v) * 100 / 255 - 100)*(-1))
> >
> > And I found this usefule.
>
> This is very clearly wrong for the signal strength information I get in the
> rx header on my card (MiniPCI card in an IBM Thinkpad), you endup with it
> saying -140 dBm signal, -200 dBm noise level about 4ft away from the AP.
> or something roughly that insane.
>
> -- Gerald
>