Ive got a Freeview box already. Can I just replace it with my Freesat one?
No. Freesat boxes use satellite dishes, whereas Freeview uses an aerial. This means they have two different types of input, and you cannot use a Freesat box with an aerial in the same way you can’t use a Freeview box with a satellite dish. The same goes for TVs with built in Freeview – they can’t receive Freesat without a Freesat box being plugged into them.