July 19 - Standard & Poor's Ratings Services said today that Hunt Valley, Md.-based TV broadcaster Sinclair Broadcast Group Inc.'s (BB-/Stable/--) plan to purchase a group of TV stations owned by Newport Television LLC does not affect its ratings or outlook on Sinclair. Sinclair entered into a definitive agreement to purchase the broadcast assets of six television stations for about $412 million. Sinclair will fund the acquisition through cash on hand and to-be-determined capital markets transa