Presently, the immense majority of TV stations broadcasting in digital are
using UHF (14 and up) channels to do so. Nonetheless, this is not due to any
technical requirement of digital broadcasting. This is all because the UHF
channels were more likely to be available in most television markets.
When the digital switch is completed and TV stations no longer broadcasting
in analog, a considerable number of stations plan to switch and use their
current analog VHF channels for digital instead.