TDN4

TDN4 is the quaternary state-owned television channel in Calebria, managed by TDN and overseen by RTDN. It was created to address the growing competition from local TV stations in each Calebrian province. To level the playing field, the channel was dedicated solely as a dedicated placeholder channel for local TDN offices to broadcast their content. As a filler content, it broadcasts repeated content from other TDN channels and even features programs from RDN stations. The channel's primary purpose is to provide a platform for locally produced content.

TDN4's spiritual predecessor was a network of local TDN stations in different provinces. They repeated TDN1's programming with local disconnections, but competition from other networks led to their discontinuation.

1997-2001
In 1997, TDN's channels underwent a major rebranding effort, simplifying their names to TDN1, TDN2, TDN3 and TDN4. This change has remained in effect to the present day.