...+ U.S. TV broadcaster Nexstar Broadcasting Group Inc. plans to issue $250 million senior unsecured notes due 2022. The company will use the proceeds to fund its pending acquisition of three TV stations for $217 million and for general corporate purposes. + We are revising our rating outlook on Nexstar to positive from stable and are affirming our 'B+' corporate credit rating on the company. The '##' issue-level and '1' recovery ratings on the company's senior secured debt remains unchanged. + We are also assigning our 'B+' issue-level and '4' recovery ratings to the company's proposed $250 million senior unsecured notes due 2022 and are revising our issue-level recovery and ratings on the senior unsecured notes due 2020 to '4' from '5' and to 'B+' from 'B', respectively. + The positive outlook reflects our view that Nexstar's leverage will moderate and improve to about 5x over the next 12-18 months. CHICAGO (Standard & Poor's) Jan. 21, 2015--Standard & Poor's Ratings Services said today...