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 M4011 Tube question

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T O P I C    R E V I E W
Gewehr Posted - 12/28/2013 : 00:35:42
I received a GMC-320 for Christmas. As advertised here http://www.gqelectronicsllc.com/comersus/store/comersus_viewItem.asp?idProduct=4560 , it is sensitive to Beta, Gamma, and X-ray. But if you look at the specs for the M4011 tube, it says it's only sensitive to beta and gamma? Which one is correct?
5   L A T E S T    R E P L I E S    (Newest First)
seb Posted - 02/18/2014 : 02:14:53
Gewehr : X-rays are gamma rays, their energy change a little but they are of the same nature. So a tube that detects gammas detects x-rays.

The tube is not energy compensated.
Gewehr Posted - 01/01/2014 : 21:38:37
Ok, thank you.
ZLM Posted - 01/01/2014 : 20:36:56
1. I do not think the tube is energy-compensated.
2. No. The GMC-320 is not a open source project.
3. Yes. There is a blue potentiometer for adjusting the tube voltage. But the range of voltage adjusting is limited.
Gewehr Posted - 01/01/2014 : 02:08:55
ZLM, thanks for reply.

I have a few more questions

1) is the tube energy-compensated?
2) is there a schematic available for the GMC-320?
3) is the blue potentiometer for adjusting the tube voltage?

Thanks
ZLM Posted - 12/30/2013 : 20:56:21
Beta, Gamma, and X-ray.

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