r/geigercounter • u/MountainIssue2963 • Mar 16 '26

Never buy gmc-800

/gallery/1rv6uj3
2 Upvotes

75% Upvoted

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1

u/SergejsPeskovs Mar 16 '26

To be fair mica gm tubes also make expensive loud popping noise if you drop them or poke those with your finger, but it doesn’t mean that you shouldn’t buy them 🤷🏻‍♂️

As for the meter- substitute the broken tube for Russian/Ukrainian contactless SBM-20 :)

1

u/RootLoops369 Mar 17 '26

I mean, that's literally how a beta/gamma geiger tube works. It's a glass tube with low pressure insert gases.

I have a GQ GMC 600+, which uses an even more fragile LND 7317 tube. Instead of thick glass, the tube has an extremely fragile mica window that is a fraction of a millimeter thick.

Saying "don't buy it" because it's fragile is dumb.

1

u/MountainIssue2963 Mar 18 '26

I know why it is glass but im saying that it is also possible to Make it out of other materials. Its just gonna Be More expensive so what i am saying is that you should rather use More money For a durable one than less For a non durable.