There are also LNBs available with dual polarity outputs, one output circular and the other linear, so you can get both types of sats with just one antenna ... and if you think you may ever want to have two receivers connected to your moving dish, there are even ones with quad outputs with two of the outputs being circular and the other two linear, one of each type for each receiver. This would allow you to record something on one channel while watching another, but of course both channels would have to be on the same sat since you could only have your dish pointed at one sat at a time. In order for you to be able to record something on one sat while watching something on another, you would of course have to have two dishes ... wow, just think of it! That would be the best setup ever, having two moving dishes with dual polarity LNBs on each one!