TRT 4 was a Turkish free-to-air television channel. The channel broadcast cultural and educational programs until 2008.
TRT 4 started test transmissions on July 30, 1990 as "4. Kanal" or TV4, as an educational channel.
The channel broadcast educational programs (correspondence courses). As of the 2001 realignment, most programs were provided by the National Education Ministry and Anadolu University.
Afterward TRT 4 started broadcast the repeats of Turkish folk, documentaries and classical music programming.
From 1 November 2008, its broadcast times are: 21:00 - 07:00 (EET) after the release of TRT ÃÂocuk, It has many subprograms. TRT 4 logo replaced TRT ÃÂocuk logo during the program.
Currently TRT 4 shows programs of TRT Müzik channel.
During late 2008 to late 2009, TRT 4 is only channel of TRT that close to the testcard at night. While before that TRT 3 also close from 1am to 5am. And before 2003 TRT 1 and TRT 2 also close at night.