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 2.GQ Geiger Muller Counter
 GMC-300 digital Geiger replacing the tube		  New Topic  Reply to Topic
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dom

3 Posts
Posted - 05/16/2012 :  02:30:24  Show Profile  Reply with Quote
Hi first of all I apologize for my English, I apologize in advance for any mistakes but still I have just joined the forum.
My question is this about 4 months ago I bought a GMC-300, now I want to replace the pipe m4011 with an SBT-9 Alpha, Beta, Gamma Geiger Tube, I wanted to ask how to do this, can anyone help?
thanks
Reply #1

ZLM

1261 Posts
Posted - 05/19/2012 :  17:59:58  Show Profile  Reply with Quote
You can do it yourself.

Just remove the origianl M4011 and place your tube on it.

Make sure the + and - ends matches PCB sign.

Adjust the voltage to get the stable background reading.
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Reply #2

dom

3 Posts
Posted - 05/23/2012 :  23:14:14  Show Profile  Reply with Quote
thanks ZLM, I will try now, I'll let you know how it went.
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