Television services under the name Thai Thorathat (Channel 4) started on 24 June 1955 in time for national day celebrations.

In 2005, the Ministry of Finance announced their plan to digitize free-to-air television broadcasts nationwide.

Trial broadcasts were undertaken, involving 1,000 households in the Bangkok Metropolitan Area.

MCOT was expected to launch its digital terrestrial television services nationally in 2012.

All Analogue television Stations was switched off in 2020 Broadcasting on MCOT's 3rd MUX of 5 (UHF Channel 40 for Bangkok) The logo is shown on commercial breaks and test transmissions.

Until the introduction of 24-hour broadcasting in 2002, MCOT used the PM5544 test pattern during the off-air hours of TV9 and EBU Colorbars on Channel 3.