[mythtv-users] Problems tuning PVR 250

[Brad]

On Tue, 2004-12-14 at 00:38 +0100, Robert Copelan wrote:
> Brad,
> Try the following for channel 3
> perl ptune.pl  --frequency 88000
> 
> for channel 4:  perl ptune.pl --frequency 95000
> 
> 
> 

> >> >> > On Mon, 2004-12-13 at 14:50 +0100, Robert Copelan wrote:
> >> >> >> Brad,
> >> >> >> Try tuning to channnel 10 and see if you get channel 18.  My
> >> PVR250,
> >> >> >> purchased 2 weeks ago, has a TYPE 50 tuner.  That one seems to not
> >> >> yet
> >> >> >> be
> >> >> >> fully supported.  Also, I have found that by plugging in
> >> frequencies
> >> >> >> directly it will receive correctly. (ptune.pl --frequency xxxxxx)
> >> It
> >> >> >> seems
> >> >> >> that the frequencies are all non-standard though.  This is
> >> probably
> >> >> due
> >> >> >> to
> >> >> >> some differently calculated parameters for this new tuner.
> >> >> >>
> >> >> >> Tonight, I'll send you a script to find working freqs and a couple
> >> of
> >> >> >> the
> >> >> >> ones I found on my system.
> >> >> >>
> >> >> >> There was a posting last week about a patch to tune.c (kernel
> >> >> program)
> >> >> >> that might help.
> >> >> >>
> >> >> >>
> >> >> >> Robert
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> > I am running the coax out from a digital cable box into the
> >> tuner
> >> >> of a
> >> >> >> > PVR 250 and I can't get it tuned in at all.  I have been running
> >> >> >> > `/usr/lib/ivtv/ptune-ui.pl &  mplayer /dev/video0` and trying
> >> all
> >> >> >> > different combinations.  Things definitely change and range
> >> >> anywhere
> >> >> >> > from a black screen to a screen with wavy colors, to regular old
> >> >> snow.
> >> >> >> > The tuner
> >> >> >> > shows up as a type 2 and I added that option to modprobe.conf:
> >> >> >> >
> >> >> >> > # ivtv modules setup
> >> >> >> > alias char-major-81 videodev
> >> >> >> > alias char-major-81-0 ivtv
> >> >> >> > options tuner type=2
> >> >> >> >
> >> >> >> > Any help is greatly appreciated.
> >> >> >> >
> >> >> >> > Brad
> >> >> >> >
> >> >> >
> >> >> > Robert,
> >> >> >
> >> >> > Brad
> 

Thanks to everyone for the help.  I feel a bit foolish, but tonight I
had the tv on while following the lists' suggestions and noticed that my
'wavy' screen when tuned to channel 3 _is_ actually the signal.  It's
the picture chopped into sections with black lines separating the
chunks.  The black lines run mostly horizontal but slightly vertical.  I
tried fine tuning with ptune-ui.pl.  Tuning directly to 88000 or 95000
with ptune.pl gets me static again, so I think the frequency ptune gives
me for 3 is right or close.  Could this still be a need for an amplifier
on the line...especially given that my power pole is not grounded and
touching coax in my house lands a good shock?  It seems to me like I am
close.

Thanks again for all the help,

Brad