I recently did a little reading on comb filters which raised a question that the article I was reading didn't have the answer to. DVD stores the C and Y signals seperately, so if you use the svideo or component inputs a combfilter isn't used. On a laser disc however the C and Y signals are not stored seperately and you need to decide if the combfilter in your laser disc player or tv is better. So my question is with DSS (most specifically ExpressVu and StarChoice, that is if it differs at all between providers) are the Y and C signals stored seperately or are they compined. So in other words with the Svideo by pass the use of a compfilter or should I be using the composite connection so the 3D Y/C Digital Filter of my 43" Sony can do the seperation instead the likely inferior one in the DSS receiver. For my second question, why can't a PVR record more than one show at one time with only one line hooked up from the satellite? ExpressVu recently anounced a PVR but it can't record a show while watching another show. This lead my to look up Ultimate TV where I found out it can only record two shows at a time and requires two lines to be run to it. From the commercials I thought it could record more than 2 shows at a time. To my mind it only has to convert one show to analog to be viewed (unless PIP functions are available or desired). The other shows just require the portion of the digital bit stream coming down to be stored on the drive. So why can't the machine simply store the digital info for multiple channels while decoding and displaying the one being watched? Or do the digital signals for each channel come on multiple over lapping carrier waves that require an expensive peice of hardware in the box to issolate one at a time. And is this why the second line is required, since if two overlapping signals are wanted at the same time and extracting one destroys the other you need the second line to get it. I don't feel like rereading this again right now, so I hope it makes sense, if not I'll fix it later tonight.