Sinclair refused to allow Charter Communications to carry KDNL's high definition signal until April 19, 2007 (when KDNL-DT began airing on Charter digital channel 780 as part of a three-year national retransmission agreement between Sinclair and Charter), making the station the longest holdout in the area to make its high definition digital feed available on the provider (not counting CBS affiliate KMOV pulling its HD signal from Charter in January 2007). On June 23, 2011, KDNL upgraded its severe weather ticker to be overlaid on high definition programming without having to downconvert HD content to standard definition.