1. How is this not done everywhere? New Zealand’s roll-out of digital TV has three transmitting frequencies at each site. This allows upwards of 18 channels to be transmitted, and that is from at least 6 different companies. The multiplex is the way to go, whether it is ATSC or DVB.

    In Australia the TV companies each have their own transmitter and they fill their multiplex with garbage secondary channels. At least digital radio (DAB+) is multiplexed into common frequencies here, so maybe TV will change in the future.

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