-32763.0 dBm

[Dan Williams]

On Thu, 2012-09-27 at 14:31 +0200, Aleksander Morgado wrote:
> >>> Your output with Get Signal Strength was before:
> >>>
> >>> ECIO:
> >>>         Network 'umts': '-126.0 dBm'
> >>>
> >>> That was given from a raw read value of '252' treated as unsigned. If we
> >>> treat that value as signed we would get '-4', which multiplied by (-0.5)
> >>> gives us +2dBm.
> >>
> >> Which takes us to the next issue, which is that EcIo is not supposed to
> >> be positive as you usually have more interference/noise than signal
> >> energy...
> > 
> > Really? Well, anyway, the last patch seems to give consistent readings:
> > 
> 
> I pushed the fix now; if someone wants to investigate a bit more
> regarding the reported Ec/Io values it would be great.

EC/IO given in dBm should actually be always negative; values of less
less than 3 (ie, -2 or -1 which would be really, really good signal)
typically aren't seen since they're so good, just like you never get a
WiFi signal better than -20 dBm.

Quick overview:

http://www.telecomhall.com/what-is-ecio-and-ebno.aspx

Dan