Virtual Valve Museum

Virtual Valve Museum
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CV2287 GM tube

Size This tube measures 190x28mm overall (22mm across the glass)

 

Operating volts, Vw=Vt+40V 380V
Plateau length (average) 120V
Plateau slope 0.05%/V
Shielded background counts 35/min
Useful life >10^9 counts
Temperature coefficient 0.2V/C
Count rate for 1.0 milli-roentgen/hour Radium source 5600/min

 

Window

 CV2287
Quarter view