Around 20,000 homes in Tayside and north Fife are still not prepared for the digital switchover a month before the analogue signal in the area is switched off.
The final stage of the switchover to digital broadcasts from the Angus television transmitter will begin early on Wednesday.
Dundee is the first city on Scotland to lose its analogue television signal and go all digital.
The switchover to digital TV begins Tayside and Fife on Wednesday, with a special warning made for some Fife residents.
Residents in Tayside and Fife have been preparing for the start of the region's digital switchover by snapping up set-top boxes and televisions.
First there was the Q7. Then the Q5 and Q3. All have been a phenomenal success for Audi.
After years of publicity, Perth, Angus, Dundee and parts of Fife have finally joined the "digital revolution."
Parts of Fife could be affected by the switchover to digital TV as from Wednesday, it has emerged.
For more than 150 years Perth Show has been a popular, once a year meeting point for the people of the city and the farming community.
A Perth recycling centre has seen a 60% increase in the number of dumped televisions as Scotland prepares for the digital switchover.