Military SBM-20 (CTC-5, STS-5) Hard Beta and Gamma GM Detector
Made in USSR
Working Voltage 360 - 440V
Initial Voltage 80 - 330V
Plateau Length 80V
Plateau Slope 0.125% / 1V
Inherent counter background (cps) 0.45 Pulses/s
Pulse Sensitivity 24 Pulses/s
Interelectrode Capacitance 7pF
Load Resistance 5 - 10 MOhms
Working Temperature Range -40 +50°C
Length: 4.3 inches (110 mm).
Diameter 9mm