You aparently have the 1945 or 1949 TM.The post WWII mfg units A&B have diferent T-1 power transformers and relay assembly.That is the diference between the PP-114 and 114A.The PP-114B is the same electronicly as the A except the power input cable is fixed to the unit where as the A has 2 bannana pins and sockets.
Dallas,