The Bangor Opera House has been transformed into a broadcast studio complete with large microphones, a live band, jingles advertising local businesses, actors playing multiple roles and flashing “applause” signs that tell theatergoers when to put their hands together for Penobscot Theatre Company’s holiday production. Not only is the show a delightful tribute to Frank Capra‘s 1946 film classic, “It’s a Wonderful Life,” but it’s a loving homage to live radio as well.