According to the regulation a channel difference of at least 3 channels ( 21 MHz in VHF and 24 MHz in UHF ) is required in each region .
The private broadcasters use UHF band .
According to the regulation a channel difference of at least 3 channels ( 21 MHz in VHF and 24 MHz in UHF band ) is required in each region .
The private broadcasters use UHF band .