[mythtv-users] Signal strength, DVB-T

[Nicolas Will]

On Sat, 2008-02-02 at 12:55 -0500, Tom Dexter wrote:
> On Feb 1, 2008 12:33 PM, Bruce Richardson <itsbruce at workshy.org>
> wrote:
> > On Fri, Feb 01, 2008 at 03:04:35PM +0000, Richard Scott wrote:
> > > For me (2 x Nova-T) on the Sudbury transmitter, MythTV reports a
> signal
> > > strength of 30-40%.
> > >
> > > The DVB command line utils (tzap,etc) report a much, much better
> signal
> > > strength and a Humax receiver connected in place of either tuner
> reports
> > > 95 or 100% signal.
> > >
> > > I have a vague recollection that it's an issue with some DVB
> drivers -
> > > they don't report the signal strength in the way Myth expects.
> >
> > Good point.  I'll check with tzap when I have time.
> >
> > --
> > Bruce
> >
> If the signal strength you're referring to in mythtv is the one that
> momentarily appears in the OSD when you change channels, I think that
> (at least in 0.20.2 with my HD-5500 cards) there might be some sort of
> timing issue with the way mythtv reads that strength.  Mine sometimes
> even shows zero.  However, if I actually display the strength by
> either using the F7 key in mythtv or using a separate program (I use
> femon a lot) it'll be anywhere from 60 to 95.

I have just created this page:

http://linuxtv.org/wiki/index.php/Testing_reception_quality

with script from others.

Could be useful.

Nico