[mythtv-users] PVR-150 only gets 3 cable channels

[Rudy Zijlstra]

George Roberts wrote:

>I just got a used pvr-150 for my mythtv box but I can only get a few 
>channels through my comcast cable and only just barely.  As a coincidence 
>these are the same channels that - if I disconnect the cable, set the tv to 
>that channel, and reconnect the cable - the TV sees these but no other channels 
>work.  If I set the channel when the cable is connected the TV, it can tune it 
>no problem.  These few stations that "work" are all contiguous - something
>like 4,5,6 if I remember right.  Also if I connect the vcr cable out to the
>pvr-150 it gets channel 3 from the vcr just fine.
>
>I suspect this means comcast has the station carrier frequencies off by quite 
>a bit and the pvr-150 can't tune them in.  Or maybe cable channels are 
>normally at different frequencies than over the air?
>
>Is there a tune feature for the pvr-150 that has to be enabled?  Is there a 
>way to tell it exactly what frequency each channel is on (like the HDTV card)?
>Is there any kind of config file for pvr-150s?
>
>Does anyone else out there use a pvr-150 on mythtv with 
>comcast cable in Boston area?  Is my card just defective?
>
>  
>
How is your cabling setup? Besides the other good suggestions already 
given, it also may be your signal strenght is a problem.
I am not certain, as your description calls for some interpretation.

Cheers,

Rudy

P.S. i do not think it to be a PAL version. In that case he would see 
*no* channel at all.