Last year DirecTV made history with the first live 4K broadcast -- the PGA Masters Tournament. It was only one channel, sure, but up to that point anything we'd seen in UHD had been pre-recorded. For the outfit's return trip to the 4K links, DirecTV is doubling the number of channels available. CBS is handling production duties for channels 105 and 106 from April 6th through the 9th. The former will feature views from Amen Corner, while the latter is dedicated to holes 15 and 16.