[NJARC] RCA Tube Tester

[Nick Senker]

Does anyone have info for an RCA Mod 156 Tube Tester, circa 1940?  I got some info from manualman.com but it is from a 1938 model.  Apparently significant changes were made without changing the model number.  Mine uses a 6J5 tube whereas the earlier model used a 1H4 as a rectifier.  Unmarked parts and different locations make troubleshooting very difficult.  Any help would be appreciated.  Nick Senker NJARC