TDF is a French company which provides radio and television transmission services, services for telecoms operators, and other multimedia services: digitization of content, encoding, storage, etc.

Its headquarters are located in Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

.

It is the dominant partner in the HDRR

Haut Débit Radio Régional

Haut Débit Radio Régional is a French WiMAX service provider consortium. Members of the consortium include TDF Group , Axione and LD Collectivités, with extra investment provided by the Caisse des Dépôts et Consignations...

 WiMAX

WiMAX

WiMAX is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision provided bit rates up to 40 Mbit/s with the 2011 update up to 1 Gbit/s for fixed stations...

 consortium. It is also part of Digital Radio Mondiale

Digital Radio Mondiale

Digital Radio Mondiale is a set of digital audio broadcasting technologies designed to work over the bands currently used for AM broadcasting, particularly shortwave...

.

Replaces

Replaced in 1993 to make a separated companies to launch more channels:

1. TDF1 to TF1
   TF1
   TF1 is a national French TV channel, controlled by TF1 Group, whose major share-holder is Bouygues. TF1's average market share of 24% makes it the most popular domestic network...
   
   
2. TDF2 to France 2
   France 2
   France 2 is a French public national television channel. It is part of the state-owned France Télévisions group, along with France 3, France 4, France 5 and France Ô...
   
   
3. TDF3 to France 3
   France 3
   France 3 is the second largest French public television channel and part of the France Télévisions group, which also includes France 2, France 4, France 5, and France Ô....
   
   
4. TDF4 to Canal+
   Canal+
   Canal+ is a French premium pay television channel launched in 1984. It is 80% owned by the Canal+ Group, which in turn is owned by Vivendi SA. The channel broadcasts several kinds of programming, mostly encrypted...
   
   
5. TDF5 to France 5
   France 5
   France 5 is a public television network in France, part of the France Télévisions group. Principally featuring educational programming, the channel's motto is la chaîne de la connaissance et du savoir...
   
   
6. TDF6 to M6