If you get your picture from a regular aerial in the loft or on the roof then this is terrestrial. So called be cause it comes from a source on the planet. Hence 'terrestrial'. Satellite signals also originate from the planet but as the name suggests go via a Satellite making the signal extra terrestrial if you like. Now if we consider cable TV then speaking pedantically this is also terrestrial but is generally not referred to as such. Simply put cable and Satellite are 'pure digital'. Aerial receptions are known as terrestrial and can be analogue or digital. Laviva Online Store
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