I have decided to by a Panasonic V series and their blue ray recorder in the New Year and to use the freesat which I will need installing, I am a bit confused how many cables will I need I was told in one shop that I would need 2 to enable me to watch one channel and record another one or to record two at once,then in another shop I would need three this would be fore freeview does this mean I would no longer need my exsisting ordinary aerial cable any more. Thanks for any help.