[mythtv-users] Image Quality PVR-500

[David Brodbeck]

Brian Wood wrote:
> Some people have said that the tuners on the capture cards are  
> pickier about levels than the ones in TV sets, but I'm not really  
> sure I believe that, because I would think they are using the same  
> tuner modules that are used in TV sets, why design a totally  
> different unit?

I've always suspected the problem is a tuner card lives in a very noisy
environment.  That limits the amount of amplification (and hence AGC)
they can put on the card, because it would end up amplifying noise from
all the other components in the computer.