STS-6 lot 1pc Geiger counter Tube for dosimeter radiometer NEW analog SBM-19 

Tested Working well!

Working Voltage 390 - 400V

Initial Voltage 285 - 335V

Plateau Length 80V Plateau Slope 0.125% / 1V

Inherent counter background (cps) 1.83 Pulses/s

Interelectrode Capacitance 10pF

Load Resistance 5 - 10 MOhms

Working Temperature Range -500 +700 С

Length 199 mm

Diameter 22 mm

Tested Working well