[mythtv-users] channel tuning

[Mitko Haralanov]

On Thu, 10 Jun 2004 13:28:10 -0500
"Cotter, Paul M." <pcotter at kmzr.com> wrote:

> 
> Thanks for the info, I'll try that.
> 
> Paul
> 
> 
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Tim Tait
> Sent: Thursday, June 10, 2004 12:41 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] channel tuning
> 
> 
> Here is a private response I got. I have not tried it yet. I wonder if
> Comcast has shifted their channels on purpose...
> 
> Tim
> 
> >Tim,
> >
> >Well, you could do it through the channel editor in mythsetup.
> >However,
> 
> >I found the easiest way was to do it directly through mysql. Since
> >all my channels needed +10 or more finetuning I logged onto mysql. I
> >don't know if you are familiar with mysql so here is the command to
> >update all of the channels - "UPDATE channel SET finetune=10;". No
> >quotes are needed at the mysql prompt. Then to change channels 3 & 5
> >to the correct value use - "UPDATE channel SET finetune=15 WHERE
> >chanid=1003 OR chanid=1005;". That assumes that you're chanid matches
> >mine. The default is that the chanid gets set to 1000 + channel
> >number. You should check to be sure. To finetune other individual
> >channels you can use mythsetup, channel editor.
> >
> >Bruce
> >
> >On Thu, 2004-06-10 at 11:10, Tim Tait wrote:
> > 
> >
> >> Bruce, thanks for the quick repsonse!
> >>
> >> One stupid question, how do I set the fine tuning?
> >>
> >> Tim
> >>
> >> b.taber wrote:
> > 
> >
> >> > I had the same problem. It's not a bad card. I'm using the
> >pvr-250> > but that doesn't matter. I've used us-cable-hrc and then
> >+10> > finetune on most channels. Channel 3 & 5 needed +15 and 47
> >needed> > +25. These may not be spot on but are viewable at the
> >moment.> >
> >> > Bruce
> >> >
> >> >
> >> >
> >
> 
> Cotter, Paul M. wrote:
> 
> >That's interesting - I also have Comcast and I also see 5 in B/W and
> >6 is garbage.  Almost everything else is fine, though I think the
> >tuning is slightly off on most of the channels.  Is Comcast's channel
> >table a little different or something?  I couldn't find anything
> >using a Google
> 
> >search.
> >
> >Paul
> >
> >
> >-----Original Message-----
> >From: mythtv-users-bounces at mythtv.org
> >[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Tim Tait
> >Sent: Wednesday, June 09, 2004 11:32 PM
> >To: Discussion about mythtv
> >Subject: Re: [mythtv-users] channel tuning
> >
> >Jarod Wilson wrote:
> >
> > 
> >
> >>On Jun 7, 2004, at 19:37, Andy Lee wrote:
> >>
> >>   
> >>
> >>>I've got MythTV up and running just fine, but I think I have a
> >>>     
> >>>
> >
> > 
> >
> >>>setting wrong somewhere.  Channel 5 comes in clear, but all of the
> >>>     
> >>>
> >
> > 
> >
> >>>rest are a bit fuzzy.  (My input is analog cable, Comcast to be
> >>>specific.)  This is with a Hauppage pvr-350.  On the same system
> >>>     
> >>>
> >
> > 
> >
> >>>running Windows with the Hauppage "WinTV" s/w, all the channels are
> >>>     
> >>>
> >
> > 
> >
> >>>clear, so I am reasonably sure that it is not the cable connection.
> >>>Do I have to fine tune each and every channel with xawtv?
> >>>     
> >>>
> >>xawtv does NOT work AT ALL with PVR-x50 cards, so don't even try it.
> >>
> >>   
> >>
> >>>Or did I pick the wrong cable setting for the capture card
> >somewhere?>>     
> >>>
> >>Sounds like you need to switch to the other us-cable frequency
> >table.>   
> >>
> >
> > 
> >
> >>If you're using us-cable, try switching to us-cable-hrc, or vice
> >>   
> >>
> >versa.
> > 
> >
> >I have a similar problem (Comcast in MA,USA) with a PVR250MCE using
> >the
> 
> >tuner on analog cable. When I use us-cable, ch 5 is poor and black
> >and white, ch 6 is full of junk, but everything else looks very good.
> >With the us-cable-hrc setting, 5 looks great, 6 is as good as the
> >cable box picture (which is poor), and the rest look fuzzy & wavy. Ch
> >5 looks great on the cable box.
> >
> >I am use Knoppix 3.4 on the HD with latest mythtv apt package 0.15-1,
> >ivtv 1.9 with card type patch. The tuner type set to 2.
> >
> >I tried adding 12dB of attenuation to the input, and it didn't help
> >so it's not overload. I also turned off the TV and cable box in case
> >it was interference, but also no help.
> >
> >Is this a bad card?
> > 
> >
> >
> 
> 
> 
> 
> 
> 
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This might be a little off-topic...

How much would the finetuning affect the picture? I have analog
Comcast cable (CA, USA) and while all the other channels are damn near
perfect, I get only white garbage for channel 3. Will finetuning be
able to change that or is it just to perfect an already available
signal?


-- 
Mitko Haralanov
voidtrance at comcast dot net
http://voidtrance.home.comcast.net
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