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.
Dundee is the first city on Scotland to lose its analogue television signal and go all digital.
The final stage of the switchover to digital broadcasts from the Angus television transmitter will begin early on Wednesday.
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.
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.
The adoption of a new DNA test to authenticate the pedigree of all Aberdeen-Angus calves will put the breed in the vanguard of genomic technology, retiring Aberdeen-Angus Cattle Society president, Victor Wallace, told a packed annual at Stirling.
More than 75,000 households in Tayside and Fife will wake up to a digital television revolution today.
A Perth recycling centre has seen a 60% increase in the number of dumped televisions as Scotland prepares for the digital switchover.