The lower North Island has joined the South in the shift to digital television, leaving viewers still using analogue sets unable to watch TV.
The area from Wellington to Gisborne and Taranaki went digital early this morning after the analogue signal was switched off.
Information from Going Digital showed 18,110 homes in that area were still using the analogue signal a month ago.
Most people were prepared for the change in time, Going Digital's national manager Greg Harford said.
"Don't forget if you haven't yet gone digital, or if you have other TVs that are no longer receiving pictures, you can go digital at anytime.