It is jointly owned by WIN Corporation and Southern Cross Austereo, operating as Tasmanian Digital Television.
The station was available in Hobart from its launch date and to north-eastern Tasmania (including Launceston) in August 2004, and in 2006 Kelcey Tier, Devonport.
Following significant public speculation about how programming would be carried by the new station, one of two options were suggested: Southern Cross would drop one of its affiliations (either Seven or Ten) and TDT would pick it up; or TDT would also become a dual Seven and Ten affiliate, and carry the programs that Southern Cross opted not to broadcast.
Southern Cross dropped Rove Live and Totally Wild in 2004, Big Brother in 2006, The Bold and the Beautiful in 2007, Huey's Cooking Adventures, Australian Idol and Thank God You're Here in 2008 (though it returned in 2009 with the program's move to Seven), and Neighbours and The Simpsons in 2009.
In 2012, the station began airing short local news updates produced by Southern Cross Austereo from their studios in Canberra.
As a Network 10 affiliate, TDT simulcasts the hour and a half-long 10 News First Melbourne from ATV-10 presented weekdays by Jennifer Keyte as well as their weekend bulletins from TEN-10.
TDT used to simulcast the hour-long Nine News Melbourne from GTV-9 when it was a Nine affiliate presented weekdays by Peter Hitchener as well as their weekend bulletins.
TDT is an affiliate of Network 10, also broadcasts most of 10's sub-channels (10 Bold Drama, 10 Peach Comedy and Nickelodeon) and carries their branding and most programs.