The small television market in Luxembourg led to a unique system in Europe: Luxembourg was the only country in the world in which television stations were operated in both the PAL and SECAM formats. Originally, both channels carried the same signal, Tele Luxembourg. Later, the signals were split in the two independent stations RTL-TVI, targeting the French-speaking part of Belgium and RTL Télévision, targeting France. Both stations initially continued to carry a lot of the same programming, with regards to foreign series and movies, but produced news and game shows for their target audience. As restrictions on operating commercial television stations in Europe were relaxed in the mid-1980s, RTL-TVI moved entirely to Brussels, while the popularity of RTL Télévision was somewhat diminished by the success of M6. RTL Télévision was renamed RTL9 and, even though its original terrestrial frequency in Luxembourg remains, it is now primarily a cable station for France. In 1984, German language RTL Plus was added on channel E7. All these stations carried a program in Luxembourgish, called :lb:Hei elei, kuck elei|Hei Elei, Kuck Elei. The main purpose was to show these stations were essentially broadcasters from Luxembourg and not aiming to be commercial stations in Belgium, France and Germany. When the stations were licensed in their intended broadcasting regions, this program was dropped. Today, RTL Télé Lëtzebuerg carries entertainment, magazine and news in Luxembourgish. Outside broadcasting hours, a live camera from the radio studio is broadcast, along with text news and traffic cameras. Programs from RTL Shop in French and sometimes German are broadcast a few hours a day, mostly in the morning. For a few years the station's only competitor was Tango TV, operated byTele2 from 2002 to 2007. Its main competitors in 2012 are Eldo TV and Den Oppener Kanal. All other TV stations in Luxembourg only broadcast on a local level. RTL also has a second channel, 2.RTL, with mostly reruns and live sports programmes.
In the first half of 2020 the website rtl.lu was one of the most popular and reliable sources in Luxembourgish Wikipedia. According to Alexa, the website rtl.lu is the 69th most popular website in Luxembourg.