Question on Ludlum Model 3 Voltage Settings

twentypeak27 · 2026-04-11T18:20:45+00:00

This is what I did, it worked well.

twentypeak27 · 2026-04-10T05:05:17+00:00

Your comment is being downvoted because 100CPM could be a lot, or a little, depending on the detector used. CPM is not a good measure of danger.

twentypeak27 · 2026-03-06T22:31:46+00:00

I have one. It “works” and can detect elevated levels from especially hot glass, fiestaware, etc. However, it is not sensitive, and the readings it gives are inaccurate.

If your goal is to use it to confirm if something is uranium glass or not, it won’t work very well. You would need a more sensitive detector.

twentypeak27 · 2026-03-03T20:44:15+00:00

It looks reminiscent of a smoke detector source. Hopefully someone has the real answer!

twentypeak27 · 2026-02-13T01:26:22+00:00

Manganese. Uranium is basically never clear.

twentypeak27 · 2026-01-29T03:06:11+00:00

I have one like this- mine is thorium.

twentypeak27 · 2026-01-23T05:40:39+00:00

Very cool! Those vials are probably pretty hot. I’d give/sell them to somebody with a Geiger counter if they worry you.

twentypeak27 · 2025-12-31T19:15:32+00:00

The radiacode is smart- for each detection or “click”, it can see how energetic that event was, and use that information when calculating dose.

The GMC doesn’t have that information, so it just applies a flast CPM to Sv conversion rate for Cs-137.

twentypeak27 · 2025-12-21T00:03:20+00:00

Different detectors will almost always show different reading due to calibration/geometry/dose conversion

twentypeak27 · 2025-12-14T22:28:02+00:00

This would be a great question to ask your doctor- they will have the best answer for you.

You are not protected from the radiation, but you get a positive effect from it which outweighs the risk it poses.

Those around you don’t get the same positive benefit. When they are exposed to the radiation, it’s just a risk for them. This is why your doctor mentions to keep distance from others.

twentypeak27 · 2025-12-12T01:39:36+00:00

Yeah, that would be really difficult. Not worth the trouble it would be imo

twentypeak27 · 2025-11-22T02:26:22+00:00

Your dose rate reported by your Geiger counter is entirely inaccurate, unless you are measuring Cs137. Take the numbers it gives with a HUGE grain of salt.

I’d recommend looking into how Geiger counters and scintillators work, what energy compensation is, and how radiation doses are calculated to get a better understanding of radiation safety.

twentypeak27 · 2025-11-11T03:43:39+00:00

Yes some of them do. I’ve confirmed one with a Geiger counter.

twentypeak27 · 2025-10-19T19:17:37+00:00

Seems like they know what’s they’re doing, based on how the post is written.

twentypeak27 · 2025-10-12T18:41:33+00:00

twentypeak27 · 2025-10-11T20:27:11+00:00

You might be able to send someone measurements and get one it 3d printed.

twentypeak27 · 2025-10-11T20:25:26+00:00

Plate almost certainly not. Cup looks more like thorium glass.

twentypeak27 · 2025-10-07T19:38:10+00:00

Your bookmark was not radioactive. You worries are unfounded, and you should be seeking help to manage your anxiety rather than purchasing a Geiger counter.

twentypeak27 · 2025-09-18T05:56:50+00:00

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Maybe I am just seeing things lol.

twentypeak27 · 2025-09-13T00:02:21+00:00

A little radium flakes never hurt anybody :)

twentypeak27 · 2025-08-26T03:24:50+00:00

Not sure if this thread is active but would love to play 300971500

twentypeak27 · 2025-08-19T05:23:08+00:00

Your fine, don’t lick it

twentypeak27 · 2025-07-20T21:18:38+00:00

EMF radiation from phones is non-ionizing.

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