Question: When did the area with a population of 25 million start receiving a South Korean T-DMB service ?

text: Television in South Korea
List of television channels -- Commercial broadcasting channels
In South Korea , many commercial television networks have been created after the deregulation taken in 1961 till 1990 . [ 4 ] SBS is responsible in distributing its programming content nationally , but is not responsible for producing local content aired by their affiliates .
In South Korea, there are a number of national television networks, the three largest of which are KBS, MBC, and SBS. Most of the major television studios are located on Yeouido and Sangam-dong. South Korea became the third adopter in Asia when television broadcasting began on 12 May 1956 with the opening of HLKZ-TV, a commercially operated television station. HLKZ-TV was established by the RCA Distribution Company (KORCAD) in Seoul with 186-192 MHz, 100-watt output, and 525 scanning lines. Important genres of television shows include serial dramas, historical dramas, variety shows, game shows, news programs, and documentaries. All three networks have produced increasingly lavish historical dramas in recent years. Some South Korean television programs are available on satellite and multicultural channels in foreign countries. Korean television dramas have been widely popular in other East Asian, South Asian and Southeast Asian countries, and became popularized internationally at a later stage, with whole sets of videotapes or DVDs of series available with completed subtitles in different languages, online subtitle websites are also created by numerous fan clubs to cater to a global audience. Shopping channels have become quite popular in recent years as well, and the models sometimes put on entertaining acts during product pitches. There are many cable operators in South Korea, such as Tbroad, C&M, CMB, and CJ HelloVision. There are approximately 14 million cable TV subscribers nationwide. The cable operator provides TPS to its subscribers.
Name Owner Launch Covers Genre
MBC TV MBC August 1 , 1969 Nationwide News and entertainment
SBS TV SBS Media Holdings March 20 , 1991 Previously Seoul National Capital Area ; now nationwide News and entertainment
KNN Korea New Network Corporation March 14 , 1995 Busan and Gyeongnam Local entertainment and news
TBC Daegu Broadcasting Corporation March 14 , 1995 Daegu and Gyeongbuk Local entertainment and news
KBC Broadcasting Corporation March 14 , 1995 Gwangju and Jeonnam Local entertainment and news
TJB Taejon Broadcasting Corporation March 14 , 1995 Daejeon , Sejong City and Chungnam Local entertainment and news
UBC Ulsan Broadcasting Corporation September 1 , 1997 Ulsan , eastern part of Gyeongnam Local entertainment and news
JTV Jeonju Television September 17 , 1997 Jeonbuk Local entertainment and news
CJB Cheongju Broadcasting Corporation October 18 , 1997 Chungbuk Local entertainment and news
G1 Gangwon No.1 Broadcasting Corporation December 15 , 2001 Gangwon Local entertainment and news
JIBS Jeju Free International City Broadcasting System Corporation May 31 , 2002 Jeju Local entertainment and news
OBS Yeong An Hat Company December 28 , 2007 Seoul National Capital Area Metropolitan entertainment