NORTHERN NSW's analogue TV signal is getting switched off once and for all tomorrow morning at 9am, meaning the region's TV will be exclusively digital.

Tim Parker, the owner of the company contracted by Channel Ten and NBN to shut off their signals, said that people will need to be prepared for the changeover to digital, if they aren't already.

"They need to buy a set top box if they've got an old analogue TV, or if they're in the market for a new TV, they can buy a digital capable TV, which they all are now," he said.

Mr Parker said that digital TV has many advantages over analogue TV, including technical aspects, such as the lack of static which the old signal was prone to.

"If you get a signal, you get it perfectly," he said.

"It's also capable of transmitting more services, for example, the ABC has ABC1, 2, 3, News24, High Definition, and two radio stations."

According to Mr Parker, about half a million households will have their signals switched off tomorrow morning, and all of Australia should have theirs switched off by the end of next year.