▁required ▁a ▁station ' s ▁digital ▁signal ▁to ▁cover ▁at ▁least ▁ 8 0 ▁percent ▁of ▁its ▁analog ▁foot print . ▁ ▁As ▁of ▁February ▁ 2 0 1 7 , ▁SD PR ▁now ▁broadcast s ▁the ▁main ▁network ▁over ▁the ▁fifth ▁sub car rier ▁of ▁the ▁SD P B ▁Television ▁stations , ▁and ▁classical ▁music ▁( which ▁air s ▁on ▁the ▁radio ▁stations ' ▁second ▁HD ▁channel ) ▁on ▁the ▁television ▁stations ' ▁sixth ▁sub car rier . ▁ ▁Radio ▁stations ▁South ▁Dak ota ▁Public ▁Radio ▁air s ▁a ▁mix ▁of ▁news ▁and ▁talk ▁from ▁N PR , ▁Public ▁Radio ▁International ▁( PRI ), ▁American ▁Public ▁Media ▁( AP M ), ▁the ▁BBC ▁World ▁Service ▁and ▁other ▁sources . ▁St ations ▁in ▁the ▁line up ▁include : ▁ ▁South ▁Dak ota ▁Public ▁Radio ▁also ▁re bro ad cast s ▁on ▁the ▁following ▁transl ator ▁stations : ▁ ▁In ▁March ▁ 2 0 0 7 , ▁South ▁Dak ota ▁Public ▁Radio ▁started ▁broadcast ing ▁on ▁HD ▁Radio . ▁ ▁Television ▁stations ▁Television ▁stations ▁included ▁in ▁the ▁state ▁network ▁are : ▁ ▁Trans l ators ▁The ▁television ▁programming ▁from ▁SD P B ▁is ▁also ▁re bro ad cast ▁on ▁the ▁following ▁low - power ▁transl ator ▁stations : ▁ ▁Digital ▁television ▁ ▁Digital ▁channels ▁The ▁digital ▁signals ▁of ▁SD P B ' s ▁TV ▁stations ▁are ▁multiple x ed : ▁ ▁Anal og - to - dig ital ▁conversion ▁During ▁ 2 0 0 9 , ▁in ▁the ▁lead - up ▁to ▁the ▁analog