It was the second television channel to be created in Macau in 1990, when the Portuguese-language programming remained on the exclusive channel, while the Cantonese-language programming spun-off to its own channel. TDM planned to create the channel in late 1987, with initial test broadcasts scheduled for January 1988. By broadcasting in Cantonese, it would also lure potential viewers in
Hong Kong. The service would also attract the Hong Kong advertising market in line with its ban on tobacco advertising scheduled for 1990, but would cause concern from the Hong Kong government because viewers would be attracted to "dangerous" advertisements. In preparation for its launch, TDM's sole channel was broadcsting its Cantonese output from 07:00 to 21:00 between 1989 and 1990. ==Availability outside Macau==