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Victoreen 1B85A GM tube

This device measures 106x22mm overall (19mm across main body). 

This is a metal wall beta-gamma counter tube designed to replace thin-walled glass tubes.

Min operating voltage850V
Max operating voltage950V
Min beta energy160keV
Max threshold voltage800V
Min plateau length200V
Plateau slope3%/100V
Recovery time100µs
Background (at 900V)40 counts/minute
Life (at 6000 counts per minute)108 counts
(Data relates to 1B85, not 1B85A - information on any difference is needed)

Donated by Bill Wagner

This file was last modified 16:37:42, Thursday August 28, 2014