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· Cool Member
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Without getting into all the physics of IF and RF signals, as well as composite and/or HDMI, it's a case of comparing apples to oranges.

The incoming signal from the dish to the receiver is carried by coax. Irregardless of the receiver type. HOW that receiver processes the incoming signal and HOW it goes to the television is what defines quality and HD. A good example of that is a SD signal. Ever notice you have a better picture when you use S-Video cables over coax? It comes back to how said receiver processes and downconverts that signal for your television.

Another way of thinking of it is this. The LNB downconverts the incoming satellite signal to one that is useable for the receiver. The receiver in turn downconverts the LNB signal to one that is useable for the television.

I hope that helps
 
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