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T O P I C R E V I E W
brucifer
Posted - 04/23/2012 : 05:50:05 I searched the specs of the GMC-300 for the Geiger tube, and I have been unable to find it. What tube does the manufacturer build into the off-the-shelf GMC-300? Is it the M4011? Thanks.
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ZLM
Posted - 04/24/2012 : 10:24:54 The GMC-300 used M4011 tube.