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 Help with GQ GMC-500

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T O P I C    R E V I E W
solarimeter Posted - 11/02/2023 : 01:26:54
I purchased a GQ GMC-500plus brand-new. Not much is being read by it. There's a click every few minutes. However, I'm getting nothing when I try to test fresh vials of tritium, trinitite, uranium glass, and even my smoke alarms.

Is my unit broken, or am I overlooking anything in the setup?
3   L A T E S T    R E P L I E S    (Newest First)
EmfDev Posted - 11/06/2023 : 14:52:39
Please try to do a factory reset. If cpm still goes to 0, you will need to go with warranty.
solarimeter Posted - 11/05/2023 : 20:56:42
After 15 minutes, my CPM is 0 on average. not even ambient radiance.
ullix Posted - 11/02/2023 : 07:01:26
The background should be near CPM=20. You say you are getting like CPM=0.3? That sure is too low.

Do the usual things: make a factory reset. Take out the battery for a few seconds and reinsert, restart. Any changes?

It should show the anode voltage in the menu. How many Volts does it show?

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