CREATE TABLE table_75030 ("Call sign" TEXT, "Analog channel" TEXT, "Digital channel" TEXT, "Virtual channel" TEXT, "Network" TEXT, "Station Ownership" TEXT)

Call sign of k43hb-ld is what virtual channel?
SELECT "Virtual channel" FROM table_75030 WHERE "Call sign" = 'k43hb-ld'
SELECT "Virtual channel" FROM "table_75030" WHERE "Call sign" = 'k43hb-ld'