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I wanted to buy it today, thanks for review! I prefer more modern products like Radiacode/Raysid but wanted to get an additional meter for alpha radiation (just a hobbyist), so will probably get sth cheap or build one myself.

Did you add the 100nF cap in series with resistor or only the capacitor ? I tried first 2.2K and the sound was weak, then I replaced it with 100n cap. and the sound became even weaker, now I'm running with 2K, but the click sound is still very weak. P.S. I ordered mine from aliexpress and it is with M4011 tube, google said it's the same spec. as J321.

Stand on your front porch. If you go from pale-skinned to sun-burnt in .5 seconds...it's probably a nuke. There, I just saved you $180.00. You're welcome.

Uses a CdS cell with a x ray intensifier screen for a detector? That is purely garbage. Even using a naked pin photodiode would be better.

The original Russian one was decent. It dis more or less the same thing and the battery could be changed. A 10uCi check disk would get it to beep and was loud enough to easily hear it. It was only for detecting dangerous levels of radioactivity and also was only 25 bucks😂 180 bucks could get a decent geiger counter.

For years I had planned to build one of those grating spectrometers, but I wanted to build it to higher quality than most of the ones I had seen in the internet. Of course that led to me never even getting started, until I watched this video and another video promoting the same product. I decided to give it a try - it arrived today and I can only acknowledge that it is a pretty decent piece of hardware. I immediately ordered a second one for the office.

Fantástico.

very good review

I even thought the Logitech Brio camera had crap quality video. Interchangeable Lens cameras are the only ones with good video quality, even for streaming.

I am surprised that this has good reviews on Amazon. Just shows these people don't test their products or it is just another case of Amazon pushing scams.

Is he really human? I have my meows about it ....

That's a great upgrade, especially using a capacitor! I don't know why it didn't have one to begin with. Usually, you can switch off the sound-with most radiation detectors. G-M counters and scintillation counters without particle detection pulse sounds from a speaker or piezo buzzer seems so counterintuitive. Having audible clicks/beeps gives you that extra sense, that otherwise, wouldn't be there. Plus, you don't have to constantly stare at the screen/meter or LED (if there is one) that does flash-with each detection event. A radiation detector without a sounder is like a working telephone-that doesn't ring. I also like radiation detection instruments with headphone jack options, too. That way, you can use said detector more discretely, so that others won't hear it. My SEI Inspector USB G-M counter has that, too. Anyway, keep up the great work! There are a lot of radiation detection instrument developers out there that could use some tough love! Thank you!

dude, dont ever buy this dogshit from aliexpress or temu. i dont trust you or your robotic voice

You're far more likely to encounter Radon, in your home.

What happens if you remove the diffuser? Might it be possible to attach to a telescope and look at spectra of individual stars? Inquiring minds want to know. Hopefully you have another after the reverse engineering exercise? Thanks in advance.

Thank you for that entertaining video, i learnt a lot from you & i think i will be getting myself a KC761, i dont have anything i can do Alpha measurements with yet, i had though about a GMC600 but looking at the reports ime not sure thats right for me, i need a more laboratory focused device & ime up for a bit of hacking. I have a radiacode i use for gamma & unfortuunatly i to was suckered in by the gamma shart, ive hardly used the thing since ive had it, its absolutely useless unless ime stood next to my uranium doorstop. Keep up the excelent videos, i do enjoy them. Ime down in the far southwest of the UK so i have lots of spicy things to find down here.

16:34 Serious case diabetes haha

roflmao

Great video, lots of good info, no bullshit, says it like it is.

13:05 Crazy and high integrated board.

Do you mind to test someone DIY in taobao who use J307 17cm GM tube?🙏✍ I saw some of user comment to use them compare with 福禄克FLUKE RaySafe 452 is pretty decent. title:高灵敏度高精度核辐射检测仪测试仪探测器放射性核污水废水大理石

Im not even going to visit the other idiots that are willing to push the boundary! The consequences for the sake of views.... Be well, be safe, and thank you for your wonderful channel.

9:23 Hung drawn and quartered. 吊起来大卸四块吗？haha

Please tell me, what was the battery standby time with the original firmware?

Hey, it´s me again, the guy with the FS 5000 with a short tube. Meanwhile Bosean replaced it with a new device production date 07/24 and with a J321 tube inside. Me happy now. 😁 Question: measuring some 0.30 micro Sievert on top of a sample with the back plate attached. Without back plate and with the tube therefore touching the sample up to 0.9 micro Sievert. Normal? Is that due to some millimeters more distance or is it the back plate itself? And which one is the "correct" value? 🤔

Latest version has dark theme

What is “sodium flare” and what are the actual wavelengths of “sodium flare” I’ve seen a lot of discrepancies between sources about the actual wave length. Why is it supposed to be so damaging to the eye? Maybe this is a inappropriately to ask this and if so I apologize.

amazing video now i gotta get lots of lightglobes lol and perhaps the ir spikes come from the lasers ect hitting the walls and generating ir after entering the box perhaps something similar happens with the others also

17:50 min: An addition to your statement that gadolinium oxysulfide is 3000 times less sensitive to Cs-137 than to X-rays and has a shockingly low sensitivity to gamma radiation. If you read the patent US6897448, the sensor consists of 4 components: a transparent cone, 2 layers of phosphor and on top (outside) a high-density metal coating. The author recommends lead. It could therefore be that the sensor is surrounded by a thin lead foil and only the bremsstrahlung generated in it reaches the phosphor and interacts with it. It is then also sensitive to this. That would explain why your first X-ray tube had no effect; the lead completely shielded the low-energy radiation. It could therefore be that the sensor is more sensitive to radiation that generates a lot of bremsstrahlung.

Hello my dear friend, have you checked out the Fnirsi gc 02 or it's clone ERICKHILL Geiger Counter?

You did a great job in upgrading this instrument! That's how it should've been made to begin with! I also like external probes in certain situations. You can use it on a hot source, but from a distance, getting less exposure-with a long HV cable. Also, you can read the display in awkward settings and positions, unlike with an internal G-M tube! Besides the awesome upgrades, I like that this has an actual mini-speaker-powered by an audio amplifier circuit! Sometimes, piezo buzzers just don't do it justice, in my opinion, like a good ol' fashioned amplified speaker! You could also make an energy-compensated probe, if you can get your hands on some brass or tin tubing! Very well-done video! I enjoy these a lot! Thank you so much, and cheers from the USA!

Ugh. I remember watching that video from "Survival Lilly"-using the the Gamma-Scat and other numerous G-M detectors and dosimeters. I wanted to pull my hair out, but fortunately for me, my head is shaved! Her video should be re-titled: "How NOT to compare and measure ionizing radiation with Geiger-Müller counters and dosimeters." It was painful. She could have used a CD V-700, since those have energy-compensated probes. Then again, that would be way over her head to understand. It must be nice to have so much money, but spend it all on devices she doesn't even understand, let alone use properly. It's why we can't have nice things. Thank you for making these videos! They're very well-done! I almost always use CPM and CPS, which is why I'm interested in buying the Bosean FS-5000, which you also did a great job with! Hopefully, that will be my first Chinese G-M counter! So, thanks a lot! I appreciate it! Cheers from the USA!

In your opinion what would be the minimum microseiverts per hour, needed to casue this unit to start chirping its alarm ? Is this device completely useless in a fallout situation, to alert someone to get to a shelter before they would be in mortal danger of over exposure to nuclear fallout/radiation ? I also want to thank you for spending so much of your time and money on your videos.

I know the spectrometer is rated only down to 300nm, but did you ever get a deeper UV bulb on it? I know germicidal UV is at 254nm so was wondering if the spectrometer would actually be able to meter a peak there in the software

Always satisfied 😀 my curiosity with your comprehensive video..........please do a video on construction of the ionisation detector shown here ..... will be a fun weekend DIY project for viewers !!!!

If it is that bad, I need one of the other dosimeters. Because I bought one over 20 years ago, I have had to put it in a drawer because my window is under the house waves and it would click so loudly after it rained in 2011 post 3/11 I had to put it in a drawer. The only time it actually made an alarm was riding with my brother on the interstate when he was trying to pass a white unmarked tractor trailer, and I pulled it out of my pocket and showed him, convinced him to slow down and exit to travel on another highway to get away from that truck. Other people carrying a Geiger counter because of 3/11 were having similar experiments on interstates encountering white unmarked tractor trailers. Apparently thefind it safer to move hot loads with no marking or fanfare ?

I wonder if this spectrometer would be good enough to distinguish between flame from burning methanol and ethanol.

Great video as always. Thanks for sharing! For such a price, I thought they'd use SBM-21 for the sensor to achieve the small size and sensitivity. Then a minute down the test part, I'm totally angry about how terrible it is. In comparison, the ionization chamber without special treated gas but filled with merely air works better than I expected!🤯

I Have 3 NukAlerts After 3-11-11 Wife & I Had It GO OFF In The Rain Nuclear Fall OUT In The Rain On Way Home From dinner Cancer Rate UP 400% My Wife Know ALL Nuclear LIES @ 43 CPM

14:21 I thought you were going to smash it with a hammer xD It only detects fluorescence with a photoresistor, so it needs extreme amount of radiation to work. A total scam. lol I like the robotic voice

Please add CRI measurement to this product. ❤

if this turns red, your ded lol

Doesn't seem like a true scam. At least the design technically functions as a radiation detector. I'm sure there was a much better design someone made but the accounting department demanded that they cheapify it.

The PIC12F5xx series are the absolute cheapest of PIC chips. They are great for small simple jobs and I've used them for many projects because they cost $0.60 each. The CDS cell is also the cheapest possible sensor and even a simple photodiode alone would probably do a better job. I'd even wager that a 1N914 signal diode might be more sensitive and cost less. I'd love to download the firmware of the chip and disassemble it for shits and giggles. I suspect it will grossly under utilize the capabilities of these PIC chips

This channel is like a breath of fresh air among all the sponsored an bribed ones!

How is possible that all of those counters use the same tube? Take the hfs and the fs 5000, the difference in performance you measured in the other videos is staggering. I didn't expect voltage to be that big of a variable

What happens if you leave the source on the detector for a longer? Period does it pick it up? It might require more time to react with simple electronics.

Finally you met your nemesis

I do not know about the rest of the world, but in Russia the Internet is littered with ads for the sale of old Soviet radiation measuring devices. Army devices can be purchased from $ 10 ($10 for a workable device!). A normal household appliance will cost from $ 30.