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| Low cost reliable dosimeter for nuclear fallout survival? |
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| Avaalon:
So I decided to buy a US company made used GMC-300E+ geiger counter and I found out that it for some reason originally uses a lower quality glass chinese J305 geiger tube. I have seen on Youtube that these tubes are being removed and replaced with soviet SBM-20 tubes. As I understand it, the larger tubes are more sensitive to radiation and the metal housing is more durable than the glass one, the glass ones can become more sensitive to light as well. Are the SBM-20 tubes the best for modding or are they just the most popular/have best price quality ratio? |
| 5U4GB:
--- Quote from: Avaalon on March 17, 2024, 04:05:58 pm ---So I decided to buy a US company made used GMC-300E+ geiger counter and I found out that it for some reason originally uses a lower quality glass chinese J305 geiger tube. --- End quote --- That was one of the readily-available Chinese cheapie tubes I mentioned earlier, GQ used to use M4011s a while back. In any case the GQ devices are cheap, work well enough for things like checking mineral samples, and are easily available via Amazon and similar. |
| Avaalon:
Most important application for it is in case of fallout or nuclear plant accident survival because my city Vilnius is close to Belarussian unsafe Astravec nuclear plant. If Putin decides to use nuclear weapons against NATO or even Ukraine there could be severe danger of nuclear fallout. So I need to be sure if gmc-300s modified or unmodified would be able to save life and help reduce radiation poisoning. |
| David Hess:
How much did you pay and how much will the modifications cost? The Radiacode is about $300. |
| Avaalon:
I paid 97Eu including shipping from USA and taxes. SBM-20 tube costs 15-20Eu. |
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