202mm diameter, end window type, photocathode material is double alkali (effective photosensitive surface diameter: 190mm; spectral response range: 300-650nm)
114mm diameter, end window type, photocathode material is double alkali (effective photosensitive surface diameter: 100mm; spectral response range: 300-650nm)
76mm diameter, end window type, photocathode material is double alkali (effective photosensitive surface diameter: 70mm; spectral response range: 300-650nm)
