CREATE TABLE table_204_793 (id DECIMAL, "call-sign" TEXT, "location" TEXT, "rf" DECIMAL, "psip" DECIMAL, "programming" TEXT)

is the rf for wivm ld 39 or 29 ?
SELECT "rf" FROM table_204_793 WHERE "rf" IN (39, 29) AND "call-sign" = 'wivm-ld'
SELECT "rf" FROM "table_204_793" WHERE "call-sign" = 'wivm-ld' AND "rf" IN (39, 29)