CLEAPSS Supporting practical science and technology
GL315 - Repairing an old-style Geiger tube holder cable connector (PET100 plug)
For decades, the standard connectors used to connect a GM tube holder cable to the counter/scaler were the PET100 plug and socket. These are now obsolete and difficult to get hold of, particularly the plugs. Manufacturers of school counter units have mostly switched to other connectors, mainly the BNC type.