[mythtv-users] channel tuning

[Tim Tait]

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?
>  
>
>