I have a Signal Corps BC-115 Aircraft Receiver or Tuner (circa 1929, early 1930s). It seems to have been a part of SCR-133, SCR-134 and SCR-135 but what sources I can find are vague about details. Looking for documentation, including: TM 11-201 or TR 1210-5 -- Joseph Pinner Kingston, TN KC5IJD / AFA4JP Roane County OES 408