The Perfect Cheap Geiger Counter?

[@panaiotpanaiotov2154]

Thanks for the great review. For this price, I don't think there is a better one on the market. I've been using it for a few months now and you confirm my opinion.

[@Ni5ei]

I'm pretty happy with mine. One thing I wish they'd done is make the second display style (you can choose between "Concise style" and "Compact style") would simply be accessible as an extra page on the main display. As it is now, the up/down buttons let you choose between Sv, Counts and Graph. It would have been very simple to add a fourth page where you get the "Compact style" view, displaying real time Sv, average Sv, counts p/s, counts p/m and total dose all at once. It takes quite a few button presses to change this in the menu and could be so much simpler.

[@_Haabibi]

For anyone interested, i purchased, and opened up this one, and they are putting the J321 in it still. Same for the amazon variety of this one!

[@project-326]

Good to see that they are keeping their word!

[@Agralas]

Interesting info about this counter. Recently, there was information that the manufacturer decided to abandon the use of the J321 tube and began to install a no-name tube there, which is why the accuracy of the device has dropped. This is what the manufacturer writes in its official store on AliExpress: "We Promise: We will replace all products in the warehouse and produce new items with NEW J321 tube to ensure all items are J321. April 10, 2024" So in the end everything is not so bad and there is a chance that the device will remain the same as in this video.

[@project-326]

People pressure works! I have been badgering their team directly here in China...

[@RupertHirst]

I also just received mine from the official store it also has the small tube HH614 or something, very disappointing bait and switch. Could you tell me the value of Resistor R60 on the front of your J321 PCB. I guess R60 is the load resistor? Looks like I will have to swap the tube to a J321. R60 on mine is 2meg ohm 422v before the resistor and 352v after. Thanks for the great videos.

[@project-326]

I have been in contact with the company, my campaign of pressure on them appears to have worked and they are now only shipping with the J321 if you buy from their official AliExpress store.

[@SlavTiger]

bought a june 2024 one, tube reads j321by xrhh 2024 ii

[@SlavTiger]

How to I verify the accuracy of my counter?

[@pisotones2348]

I read somewhere that some units come equipped with the dreaded horrid J613 Geiger-Muller tube, just like the newer FNIRSI GC-01. I've just bought an FS-5000 from the AliExpress official Bosean store linked below (48.06€). It is scheduled to be home in a few days. I'll open it up and see whether I'm lucky or not and report here.

[@pisotones2348]

Just received the Bosean FS-5000 and yes, the GM tube is indeed a J321, the same as in this video 😎

[@Ni5ei]

Mine too, J321 2024 Unit is manufactured in 02-2024 ​@@pisotones2348

[@michaelwkf00]

Thank you for the video. I really enjoy watching your review videos. So far, I had the GC-01(J321) and XR1 Pro(M4011). I may get this FS-5000 as well(thanks to your reviews). Have replaced a big buzzer in size to get a louder clicking sound(with the 100nF cap shown in your other video).

[@michaelwkf00]

Just got my new Bosean FS-5000 which cost around USD55(best price). But it comes with a J613 tube instead of a J321 tube. Is much better to go straight for a better one like Radiacode 103...

[@kurczeblade2655]

Unfortunately they don't ship it with the j321 anymore, they replaced it with some smaller shitty tube (no markings but it appears to be the j613/614), it's a shame another cheap product has gone to shit

[@robertkeyes258]

This is unfortunately what a lot of chinese manufacturers do.

[@Agralas]

Is that correct info? You received new version with that crappy tube? I was hopping to order it in nearby future, what a disappoinment 😢

[@markhart6743]

I have the same problem can the tube be replaced

[@kurczeblade2655]

@@markhart6743 Yeah you just have to desolder it out and stick in a new one, a j321 costs around 20$

[@jtcustomknives]

This is false. I just got mine and it has the correct j321 tube. There was a mix up somewhere in manufacturing and some were made with a tiny tube that has like shrink plastic around it. If you contact them about this thy will get it resolved.

[@transmitterguy478]

To Dubois, PA, the Aliexpress price is $83, and the Amazon price is $60, both freeship(cheap and fun in my opinion). Thanks for the video "Jim" I have been following you for a while now and enjoy the content.😊

[@psxtuneservice]

For me it was 42

[@project-326]

here is the link to the Aliexpress Bosean official store: www.aliexpress.com/item/1005005307226616.html?spm=a2g0o.productlist.main.5.1325c7483xPI9A&algo_pvid=66ee5bb6-0c9d-470c-98fd-a2bf893f2495&algo_exp_id=66ee5bb6-0c9d-470c-98fd-a2bf893f2495-2&pdp_npi=4%40dis%21USD%2168.68%2141.21%21%21%2168.68%2141.21%21%4021059dbe17108127581582196e9627%2112000032570843125%21sea%21HK%212881401294%21AB&curPageLogUid=YeUAKbn0coue&utparam-url=scene%3Asearch%7Cquery_from%3A

[@Andromeda2275]

Very informative presentation and concise. I just purchased the FS*5000 and am in the process of setting it up for my use, Your presentation has answered several questions. Thank you.👍👍

[@project-326]

Glad it was helpful!

[@loukili63]

@@project-326 , I bought also a one due to your good presentation. The device makes a good impression to me and does what it should. Only the PRDMS application I could not get to work on a Win11 notebook. It fails to connect to the device. I asked the service for support and waiting for an answer. One feature I miss is, in normal operation mode, a long press on the left button, should toggle the radiation click sound. It would be nice, if they could add that to save the steps doing it in configuration. Some sellers seem to offer the device with a different Geiger-Müller tube (not the J321). Buyers should ask about this if it is not explicitly advertised as such.

[@robinoja]

How does this compare to the GMC-320 Plus? Awesome content, keep it coming!

[@reisDIY]

After the disappointing Frinsi from Amazon (returned), I got this Bosean and I'm thrilled, the right tube! Obviously from your link, thrilled to have a J321 and not the terrible J613 from Frinsi. Thanks Project 326!

[@leandroebner1405]

Hi Studio 326! As I already posted in another comment, I recently bought one from their official website with a manufacturing date of March. Unfortunately, I received a FS-5000 with a smaller tube. This one is directly soldered onto the pcb, you can actually see on the pcb that there are silkscreen markings for both tubes. There are the metal clamps to install the "better" (?) J321 tube tho. I quickly checked the silkscreen notes regarding the PCB version and everything seems to be identical, expect the tube. Would it be alright to just buy an off the shelf J321 tube and install it? Can you maybe provide me all the details you can find in the device information? Last setting in the Menu. I was wondering if they applied a different firmware version to somewhat match the tubes performance and some sort of calibration. Therefore, I guess it wouldnt be the best idea to switch tubes, I believe the j321 is a lot more sensitive which would lead in wrong calculations of dose rate. Thanks for you help!

[@project-326]

Did you manage to get the PC application working for the FS-5000 yet? In the application is a place where you can change the calibration, so if you get your J321 tube installed we can discuss the calibration factor later. Don't despair, there is a community of people here that will help. I am also about to have a rant with the contact that I have from with the company. I only bought mine about 8 weeks ago, but it came with the J321, perhaps it was older stock - I didn't buy directly from the Bosean store.

[@leandroebner1405]

​@@project-326 hi, thanks so much for the response and help!!

[@project-326]

@@leandroebner1405 The reason there is two versions of the PC software is because of me. I made a real stink about it not working correctly on Win11, so they changed how the auto port detection works and then packaged two versions in the zip file. Every manufacturer needs to find ways to compete, I kind of understand the position of Bosean, they are competing with things like the FNIRSI GC-01 that basically uses what ever tube is cheapest at the time when they make a batch. FNIRSI also support the drop shippers that sell on Amazon, so I expect that each batch that is ordered can have the tube specified. Drop shippers don't give a flying f*ck about anything apart from getting into the first search page on Amazon. Mind you, the Bosean guys were trying to convince me to open an Amazon store at one point, they got a pretty short response to that. I just pinged my contact at Bosean and she promised to find out what is going on with regards to the tubes. At least this device has a decent HV PSU, its as stable as hell and won't vary from device to device like most of the other counters.

[@leandroebner1405]

@@project-326 Ahh okay. The original version is not even starting for me 😅. Yeah, I fully understand that and share your opinion. For the price and possible mods with the j-tube, it's still quite good. Better than any FNRSI based one. No matter the tube. Interface and stuff like particle clicks work out the box. Just wished I knew that before buying and many people feel the same. They should communicate that better. Anyways, how would you proceed with the mods? Unwrapped the tube out of the heat shrink, no ratings at all. Seems to be identical to the FS-600 tho. I believe a change is definitely worth it? Buying some uranium-glazed glass soon as my first sample just to get going :). Funfact: If you FULLY remove the tube and check with the particle sound that you have consistent 0CPS/CPM, it still displays 0,12uSievert/h as current value... Interesting. What should I keep in mind when ordering a new tube? Also, what would the new calibration coefficient look like?

[@project-326]

@@leandroebner1405 The calibration is actually not too easy. The J321 is also sensitive to beta but the J614 has a solid metal cathode that blocks pretty much all betas. So, with a reasonable gamma source, shield from betas and try and set for the same gamma only level. Wrap you source in lead or steel and set for the same reading on both tubes. Later, you will find that background and other measurements are higher but this is because you are now measuring more gamma events and also betas.

[@dpidwerbecki]

Great review! Thank you for the links. I think I will purchase this item as my first Geiger Counter but may eventually get a Radiacode or a Radsys unit for carrying with me on hikes/shopping. Thanks again for the great channel!

[@PatriceB83]

Hello, how to find the software to transfer data from the Bosean FS 5000 to PC THANKS

[@project-326]

www.bosean.net/download its called the Personal Radiation Dose Management System

[@georgios.marinoudis]

Thank you. Finally an affordable meter that works.

[@Ni5ei]

I like that it has instant and average readout. My only "modern" meter is a GMC 320 Plus and it only shows average but it takes ages before it reaches the correct level. My older meters all have instant readout only.

[@project-326]

Just for you, I posted the results of the quick test I made in the community section of the channel.

[@Ni5ei]

​Thank you! ​@@project-326

[@das250250]

Notes for your unit, software upgradable for future upgrade, open source software to allow it to develop.

[@russwilliams4777]

Great video! I've actually been sort of looking for a Geiger counter, but since I don't do anything with radiation or ever expect to encounter any, I don't want to spend much. But there's no point buying a cheap detector if it doesn't work! I like the suggestions, especially the Bluetooth one - while the biggest wins there are geolocation and storage capacity on a linked mobile, it would also allow the use of noise-cancelling headphones in place of the piezo sounder for the particle clicks.

[@parviz3998]

Thanks for making this video, you helped me choose the right cheap Geiger counter to buy. Got my Bosean clicking away right next to me at the moment.

[@project-326]

Great to hear!

[@orilion1820]

Thank you. I ordered one from your suggestion. I plan on applying some 422-C conformal coating and potentially upgrading the battery to increase the capacity. I may also use a plastic mesh to help keep debris from getting inside the enclosure. I greatly appreciate your content. Do you have any thoughts on my intentions for the improvements? Good idea or bad idea? Any other thoughts or suggestions are very welcome.

[@project-326]

It might be a good idea but perhaps mask off the area around the tube and its connectors...

[@orilion1820]

@@project-326 thank you 😊 My thoughts as well. This is on my project list. I will be doing this soon 👍

[@bartomiej5980]

Very nice 😁 Next review maybe GQ GMC 600 Plus? 😁

[@The-One-and-Only100]

Maybe the 500+ because of its duel tubes

[@youtubeuser6067]

Yes. The 600 has many strong points, but it's screen is not one of them. It would be great to see a tear down and any suggestions to improve it.

[@TaylorHaubrich]

Edit: I just bought the FS-5000 from your AliExpress link. Thanks for the video. I have a nukalert that i am going to keep hung up outside my makeshift fallout shelter. It's specifically for detection of higher level radiation up into rads per hour. Hopefully I can hear the chirping if it goes off. I might buy this one also so i can read the lower levels of radiation inside my shelter.

[@The-One-and-Only100]

First Just finished the video, and I'm amazed like it's cheaper and better than most geiger counters 😮 If I wasn't saving up for a kc761 and new sources I could get my self a unicorn in a heartbeat

[@jtcustomknives]

Update: I was wrong, it does still come with the J321 tube. With the change to using a shitty tube what’s the possibility of modifying it to take a much nicer tube like a pancake.

[@project-326]

I think that it will be a question of what the tube voltage is in the FS-5000 verses the requirement for a pancake tube...

[@0starman0]

@project 326 Hi thanks for the immensely informative videos you create they are invaluable and entertaining. May I ask what your choice would be for an enthusiastic noobie to this field. The fs5000, NR850 or GQ GMC800 OR indeed anything better within the constraints of cost sub £150. Thank you so much.

[@project-326]

Of those devices, I have only tested the FS-5000, so its hard to say. In the sub $50 class, this one really does it for me. Basically since I found this, I have moved away from buy and reviewing cheap counters...

[@0starman0]

@@project-326 that’s fair to say. Thank you. I ordered both the fs5000 and an NR850. The quality on the NR850 is quite lacking with a J321 tube soldered directly to wire and held, almost, by sticky a pad which will fail. AA batteries are good and results from both machines are comparable. Thanks again.

[@canneberegerouge1]

Thank you very much, this will be my first geiger counter. I think i'll have fun with it. Nice to start with someting cheap but still functionnal.

[@maxobe5120]

Please review the KB6011!! I believe it is the best one for hobbyists. If this one had the response time of the KB6011 it would be absolutely perfect.

[@airruner]

Just ordered one from Aliexpress and can't wait to test this in Ukraine. Thanks for your thorough reviews and suggestions!

[@project-326]

Hope you enjoy it!

[@42phaedrus]

Flashed my FS5000 with the Radpro firmware today and monitored it with the Geigerlog software. Impressive, both. The original firmware is automatically backed up and can be restored just as easily. Radpro allows tube selection and deadtime & background count setting. The interval between log entries is configurable. Lots more, like a true random number generator. There is even a chess game lol.

[@project-326]

how is the original firmware backed up?

[@42phaedrus]

@@project-326 the flash utility backs it up into the backup folder as a bin file. You can flash it back with the same utility.

[@Ni5ei]

I've tried it too. While I like a few things in the RAD Pro firmware, you also lose several features. I've gone back to the stock firmware.

[@42phaedrus]

@@Ni5ei What did you lose? I like the ability to fine-tune the counting algorithms, tube selection, dead time, background count and most of all the ability to communicate with Geigerlog. I miss the display and graph colours though.

[@Ni5ei]

​@@42phaedrus Not just the display colours, but also the amount of different values you can see on the display without having to press any buttons. The device has a very nice display and this all goes to waste.

[@Ryder276]

How would this compare to a gq gmc 500 plus?

[@project-326]

I have never tested any of the GMC devices, they are just too expensive to justify getting one solely for the purpose of reviewing it.

[@yunodiewtf]

Hmmmm guess this is the one I'll actually buy. As the communication appears to be serial I'll try to add a simple serial-over-bluetooth to the device and try do simple protocol decoding on Android for the lack of features you mentioned.

[@project-326]

Hacking the serial is ALWAYS a good idea. Please share your results once you figure it out!

[@yunodiewtf]

@@project-326 Hello there! So my super fast forwarder finally delivered the item. Before jumping to hacking serial I got some common sense sanity to do. My unit measured about 0.14uSv/h in the office and tube voltage measured 325V. Unfortunately I don't have any uranium laying around so do I need to mess with the HV PSU?

[@Langschwert]

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? 🤔

[@project-326]

actually both are correct. Sometimes it can be helpful to think of radiation like a light bulb. The further away you are, the lower the measured brightness will be. This is where the famous inverse-square-law comes into play. Please take a look at the wikipedia entry on that relationship. I hope that helps!

[@regor2009]

My display on fs5000 does not stay on more than 10 seconds. How do you make it stay on longer?

[@project-326]

there is a setting in the menu for this. Normally I leave it set to the maximum...

[@4iq_]

Ordered mine today. THANK YOU for your video! Maybe 1 con point for me is that its not using AA battery. Have a nice day. Greetings from Gemany ♡

[@project-326]

I agree, using off the shelf primary cells has some advantages.

[@timothykellogg9257]

Thank you for the review. I purchased a Bosan FS-5000 after the GM tube on my Pudibei NR-750 broke due to unfortunate tube placement on top of surface mount C25. Could I have gotten a bad unit? It seems to be much less sensitive than my NR-750 was. Since it's broken, I can't check, however I have a GQ GMC-500+ and I tried them with an orange Fiesta Ware plate, a uranium glass bowl, a radium dial wind up clock, and a container of Nu-Salt (Potassium Chloride). 10 minute background check with the FS-5000 was 5 CPM avg, the GQ 27 CPM. The Radium clock: FS 6 CPM, GQ 60 CPM. The Plate: FS 105 CPM, GQ 4250 CPM. The U-glass bowl FS 16CPM, GQ 96 CPM. Granted this wasn't as comprehensive/accurate as a real scientific test, but for a rule of thumb the GQ seems to be 5x to 10x more sensitive than the FS. Has anyone tried a similar experiment? Could my FS be a lemon? I have a SBT-11A/CBT-11A Alpha, Beta and Gamma mica window Geiger Tube I got from Electronic Goldmine and If I can figure out how to mount it (and protect the mica window) I want to mount it on the NR-750 to see how it does - As of yet I don't know if I will be able to calibrate it but at least It will (hopefully) be working again.

[@project-326]

Does you FS-5000 have the J321 tube fitted? It should be the same(ish) tube type as the Pudibel model...

[@timothykellogg9257]

@@project-326 I don't know what tube is in the FS-5000. The NR-750 had an M4011 tube (which the specs say is about 90 mm long end cap to end cap) and a 10 mm diameter. Looking up the J321 specs, it is also 90 mm long but 12mm in diameter. The one I have in my FS-5000 is much shorter "only" 60 mm long. It has black heat shrink around it and it is end connected with soldered wires vs clips. If there was a way to post pictures I have them. sticker on the back of the FS-5000 says PD: 2024.03

[@project-326]

@@timothykellogg9257 OK, so it seems that the FS-5000 is the older crap version. On the official Bosean official AliExpress site they print a promise to only ship with the J321 tube... The link to the official store is in the video description.

[@nenadexe]

Thank you for this suggestion! I was looking to buy Geiger counter for long time now. How is this one from aliexpress compared to GAMMA-SCOUT counters?

[@nenadexe]

Ahhhh I just saw that GAMMA-SCOUT is a piece of shit hahaah thanks I will buy this one from aliexpress then

[@_Haabibi]

New subscriber, and youre great. Love your content. Wanted to let you know however that the copys of this on Amazon use your teardown section in the video. Idk if you care, or have any power, but just figured I'd let you know if so. Excited to try this out after your recommendations! Thank you !

[@project-326]

Yes, the company asked if they could use some footage from the video, I didn't see any harm...

[@_Haabibi]

Oh even better​! That's the best outcome.

[@sparkquantum]

The FS-5000 is a good detector (much better than the GC-01) and can detect the radioactivity of thorium coated electrodes very sensitively.

[@project-326]

Yes, I noticed that too, I previously used some really low activity rods for a thorium measurement and the FS-5K gives a really stable measurement on those, in spite of the low activity.

[@Neptunium]

I agree, it would be even nicer to be able to change the unit to mRem.. that is a nice and toasty source you've got there my friend! Great review and for $48 It's pretty difficult to beat! I hope people get on board and the company can do some of your suggested upgrade !

[@project-326]

I just sent them an email with the video details, I will let everyone know if I get anything back from them...

[@Neptunium]

@@szabuowski8677 sure. It's just the force of habit.

[@robertkeyes258]

Perhaps the sensitivity is related to the exposure of the GM tube. Rather than sealing the holes, perhaps some type of sliding door can be implemented, so that the device can be protected in tough environments, and then opened when more sensitivity is required. For software, I suggest the manufacturer lets the enthusiast community write their own software, but either making their software's source code available or by providing details about the raw data coming from the device. I could probably discover this by means of a USB tap device, but it would be better to just have it presented.

[@project-326]

I agree with you, it would be great it they produced an open platform. I guess there is a compromise between commercial prudence and user engagement to be found. I think that Gissio is looking into the FS-5K right now...

[@djmambito2]

@Studio326 ...it doesn't do Alpha ... (for example radon) ... so that's a no-good for me ;)

[@project-326]

Yes, that is absolutely true but... even the cheapest alpha capable tubes cost more than the total cost of this product, and alpha particles have a range of just a few cm in air, most GM tubes that are capable of detecting some alpha, lose energy across the mica window so the actual detection range is usually less than 2cm. One effective way to detect Rn-222 is to use a gamma ray spectrometer and look for gamma peaks that correspond to the Uranium decay chain. Sadly, this kind of kit costs a lot more, please see my reviews of the Radiacode 102 and Measall KC761 for some background.

[@raisage]

Thank you very much, I really enjoyed your style, and found the information very detailed and thorough! I just placed an order, looking forward to testing this out, now that I'm armed with so much useful information about the device!

[@project-326]

Have fun!

[@raisage]

@@project-326 Thanks!

[@antoniopinto7225]

Thanks for the review. Have you ever tested the Pudibei NR-950 geiger counter? Is it any good?

[@project-326]

Unfortunately not, but I hear pretty good things about it. I think it uses the same J321 tube as the FS-5000 does, so in terms of raw sensitivity, its going to be the same. So it kind of comes down to features of the firmware, etc...

[@antoniopinto7225]

Thanks, i apreciate.

[@Lar-i7g]

I actually have both FS-5000 and NR-950, the NR-950 isn't as response as FS-5000 for low level sensitivity

[@antoniopinto7225]

Thanks, realy apreciate

[@luisarturpereira]

@@project-326The NR-750 shown on Survival Lilly has an 4011 Geiger tube.

[@das250250]

If I recall there was a project where everyone around the world had devices that reported in readings like Geiger counter etc. what would be great is a world wide network of people with a box that measures humidity , temp , light , wind , x-rays, cosmic rays , over time .

[@Alxasaurus]

This entirely depends on the circumstances; the FS5k is way more expensive and a lot less available than the GC-01 on local ecommerce sites. If you can find an FS5k being just a little more expensive than GC-01 on yours, get the FS5k and you can pick up soldering quite easily, it's superior in almost every way than GC-01 like J321 tube, larger screen, lanyard loop, pocket clip, and even superior MCU. I got a M4011 GC-01 since it's a lot cheaper, requires no soldering and has fewer question marks for firmware upgrades, its batteries seem user-upgradeable and the M4011 tube is respectable to J321. But if circumstances do allow, get an FS5k and learn how to solder, and get it calibrated or something. It goes a long long way.

[@mahaniyama]

Whats the background music? I find it very calming

[@project-326]

It's a piece of copyright free music from YT. Drifting at 432 Hz, by the Unicorn Heads

[@mahaniyama]

@@project-326 Thank You, I just ordered my FS5000 thanks to this video.

[@VelcroElGato]

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

[@mikenative]

This looks nice, in a basic but does the job kind of way. Thank you for taking the time to make these videos, I find them informative and enjoy your sense of humour. Now I have to decide what to do, I almost brought a radiacode 102 on eBay today but got outbid in the last few seconds (it went for £160). The choice is either wait for another 102 to pop up or get something cheap and simple like this. Obviously I could spend a bit more on a new 102 but then I will probably get raped by customs and charged import duty plus a pointless handling fee.

[@HouseholdDog]

The brass inserts really impress me on a chinese counter.

[@project-326]

This kind of quality decision is getting more common on products here. Check out the Measall range of gamma ray spectrometers I reviewed.

[@noahallen227]

I had the HFS-10, but it was pretty bad. I've been eyeing this Geiger counter for a while now, but there were no videos I wanted to know what tube it had. Thanks for this video, I just bought one.

[@pisotones2348]

Is its FirmWare upgradeable?

[@project-326]

The RadPro guy has FW for this device, so it seems so.

[@KarbineKyle]

I bought one of these-for approximately the same price, thanks to your excellent reviews! I'm going to test it with many of my sources and radioisotopes! I really like and agree with your suggestions-for improving it! I think it should come with a protective silicone or rubber boot or case with a transparent window-for reading the TFT screen, which would make the device even more resistant to shock, moisture, dust, and water. A reset button/feature (for zeroing the counts), and a fast and slow response for the counting average would be nice, too. I don't expect it to be perfect, but for the price and design-I find it very promising, which I hope the developers will improve upon in the future, thus releasing upgraded models and designs. This will also be my first Chinese-made G-M counter-when it arrives! I'm excited to find out what this low-cost unicorn is capable of! There's also a Rad Pro firmware upgrade available too, which hopefully improves its performance even greater than before! Thank you very much! I really appreciate it! Cheers from the USA, and have a nice day!

[@project-326]

Thank you for the awesome feedback! For sure we should not expect miracles for this kind of price, but it's nice to see that it a rugged product and does what it says. Not sure if Bosean will make another one, their main business is with gas detectors and they have a very good reputation in that market. I think that the volumes that they ship of their GM counter products is kind of small compared to the other product lines. Shame really, they are a good company with products that are quality-but-at-a-price ethos. I'm pretty loathed to install RadPro, I wasn't able to get the free PC app to run, so I am very reluctant to lose PC data collection capabilities. The silicone bumper idea sounds like a nice idea, but to be fair the product is made from GRP and not just the standard PC-ABS mix that most other products use. My kids always take this device if they are going on school trips. If cheap enough to replace if they lose it but good enough to give results to show to their teacher. On a recent school trip that involved a local flight, my eldest son scared the pants off the teacher when he said "Teacher, look 30x radiation and rising".

[@KarbineKyle]

Sure thing! You're videos are quality and thorough, which is always great to see! A lot of others' videos lack that. My Bosean FS-5000 G-M counter arrived today! Thank you very much! For a cheap G-M counter, it really is quite nice! It has a very simple UI and a nice TFT screen! It also has very good sensitivity, since it came with the J321 G-M tube, and not with the J613 G-M tube, which some of these have or had, which I think was due to a manufacturing error. I think Bosean should develop and improve more of these G-M counters. I think if they're truly determined to do so, they could make some really nice G-M counters and improve older units. Sooner or later, when I'm not too busy, I'll do some measuring and post a list-style comment on the actual activities from various radioisotopes and sources I have, and their detected activities in CPM and μSv/h-from the Bosean FS-5000. By the way, that story about the 30X background scaring the teacher cracked me up! That's cosmic radiation for ya! It's a natural, yet very interesting phenomenon! Cheers from the USA and have a wonderful day!

[@Alxasaurus]

​@@project-326 This happens to be the case with my M4011 GC-01 since I have yet to fully figure out the modified GeigerLog software to log and download from the my device beyond well, logging and downloading data from my device. GISSIO modified said GeigerLog software to have much easier time downloading data from devices with his Rad Pro firmware installed, it's on his Github, and for the life of me I could not make it run anywhere else but my own PC, it could not even detect my device on Linux, and on other Windows the software just...crashed, when trying to detect the device. What on earth did I do wrong beyond installing all of its Python dependencies? So yeah you're right, when it comes to data logging with Rad Pro it's still got some more question marks than Bosean's. Update: the GeigerLog software is also fighting for position with bluetooth adapter. One without the other is a no-go until someone can figure it out. I'll see what I can do somewhere else

[@jtcustomknives]

This is on sale one aliexpress for 49% off for a few days for a total price if $35 lol. Buying one right now

[@brigittenieen3942]

Have you been successful with the 49% off? I couldn't get the price adjustment.

[@jtcustomknives]

Yeh I got the fs5000. Took like a week

[@brigittenieen3942]

@@jtcustomknives Wow, for $35?! From which seller?

[@johnh9449]

Thanks, that's impressive. Especially the battery life and download ability. Beats my modified GC-01 even with the bigger battery I fitted. I presume the display turns off after a while to achieve the long runtime? Does the histogram autorange on the vertical scale? The GC-01 does but some don't.

[@project-326]

Yes, the bargraph autoscales, its pretty annoying that some devices can't do that.

[@BatIgor]

Thanks for the review. What Windows version did you use for the review? Me amongst other people can't get the real time data sensing to work in a proper manner.

[@project-326]

Hi, I use Win11 with this device. There should be two versions on the download site, perhaps try the other version. If you still get trouble with the PC software, you can always send them an email, there are usually pretty responsive.

[@brigittenieen3942]

Thanks for the nice review! Since your power supply is up and running, have you tested the soft x-ray sensitivity for the BR-6 as well? Would love to know if it is able to detect soft x-rays too.

[@project-326]

Yes I did, it responds pretty much the same as the FS-5000, which is in hindsight, unsurprising as it has the same tube...

[@brigittenieen3942]

@@project-326 Thanks, that was what I was hoping for. Is the J321 is the same tube as the M4011? I was worried that it would have a bad detection efficency and could only detect high energy x-rays as you mentioned is the BR-6 video. You seem to be the rainbow shitting unicorn when it comes to Geiger counter reviews. Love every video. Thanks again for sharing your valuable knowledge :-)

[@project-326]

@@brigittenieen3942 The J321 and the M4011 do seem to be very similar in performance. Glad you enjoy my little channel, I'm just sharing what I learn as I go.

[@brigittenieen3942]

@@project-326 Interesting. Small channels like yours make the platform great. When sharing awesome things is the only motivation. Keep it up!

[@jtcustomknives]

I wish the screen was sealed to prevent dust ingress from the openings in the case.

[@project-326]

on my one, I just added a layer of Kapton tape over the openings.

[@chrishewlet5471]

If you were to seal the device yourself, how would you do it? Is there any material to avoid because it would influence the readings?

[@project-326]

A zip-lok plastic bag is pretty efficient at protection from contamination...

[@chrishewlet5471]

That would absolutely help but I would like to permanently dust seal the device. Sticking tape on the inside and outside of the openings might be a quick and dirty option but there must be be better ideas.

[@maratmuratov2185]

I wanted to buy it today and contacted the seller for details as they did not have any description on the product. Sadly I got a reply that they replaced the sensor and do not recommend the purchase of the product now, which is quite strange and sad.

[@project-326]

Perhaps you can share who you talked to, if you post it here then they will probably be fired!

[@maratmuratov2185]

@@project-326 Sure, I made a collage in Google Drive and made a reply with the link but not sure if you got it, as KZbin hides them by default. Did you get it?

[@allisonzhao7227]

you can buy now, Their picture shows that it is J321 tube now

[@neonnoir9692]

Hopefully their next version uses standard batteries. I bought it, but I'm super uncomfortable with the unbranded lithium ion battery. And in a real emergency, these will be useless if power grid goes down.

[@project-326]

I really get your point on the replaceable, off-the-shelf batteries. I have recently been interacting with the so-called 'prepper' community and for sure using standard primary cells is a better match for that application. I was doing some research for a video I will be making, about a device that has been aimed at that community, which turns out to be complete snake-oil, but I did learn a healthy respect for this community on the most part, well at least the majority of them, ie those that are able to keep politics out of a discussion about radiation detectors...

[@neonnoir9692]

If and when it happens, politics will be irrelevant. Silly people. BTW very happy with this model's performance (minus the battery), appreciate the video!

[@maxbartoshik]

I assume it has simple sliding window algorithm (i.e. dose rate for the latest n seconds), what is the window size for realtime and average?

[@project-326]

These are both very good questions, but I don't have any code for the product and the manual doesn't have any better info either...

[@Ni5ei]

Wouldn't you be able to get the average time window by putting it on a source and time how long it takes for the average reading to match the instant reading? E.g. if it takes one minute for the average reading to match the instant reading , the average time window is 1 minute.

[@project-326]

@@Ni5eiYes, you could sort of extract the time constant of the TF in that way. The sample rate of the logged data is highly under-sampled and very low, only 1 sample for every 2 seconds so its not like you can measure an impulse response and run it though an FFT to extract the transfer function of the averaging function. That said, I will have a play with this later and let you know what I find. I am actually quite impressed with the averaging on this device and they have used an MCU has a floating point module, so perhaps they have taken advantage of that... I keep thinking about designing my own counter from scratch. Personally I would use an adaptive filter to iteratively converge on the average. At the initial turn-on, the filter can be populated with fewer taps and progressively increased in length as more data gets sampled.

[@project-326]

@@Ni5ei I just made a very quick test. I used a natural uranium source that had a steady state dose rate of around 115 uSv/h. There are essentially 2 filtering algorithms in effect. The instantaneous value takes about 20 seconds to reach the steady state value and the average takes about 1 minute and 75 seconds to catch up. It is about that same for the rise and fall times. Hope this help to answer you question...

[@maxbartoshik]

@@project-326 thanks. It is a simple algorithm, but its main advantage over adaptive ones that it is fully predictable. No surprises at all :)

[@v037_]

I was watching some of your videos(Your KZbin videos are really good), I wanted to buy my First cheap geiger counter, which One do you think could be the more accurate with the readings?

[@project-326]

That's a tough question to answer. I sort of depends upon what you want to do with it and how much you want to spend. If I was looking for a sub-$50 general purpose device then the FS-5000 is a reasonable choice.

[@v037_]

@@project-326 Alright, thanks for answering my question

[@chriswithall2518]

Thank you for your review i think i my purchase one of these after buy the Total Piece of Shite called the GC-01 from amazon. I only need a basic unit to detect and protect me whilst exploring. Please keep up the grat work.

[@nickdoum]

Does anyone have any experience with the GQ GMC-800 device. It looks impressive but I don't know how it fares with accuracy. They also contain the J321 tubes but do not have slots cut in body to expose the tube. I would think that would reduce the effectivness?

[@Jv615]

Thanks, i want to check my rock collection to make sure i don't have any radioactive ones in the house

[@Radeknemecko]

Super Review Friend. Thank you very much.

[@project-326]

Thank you so much 👍

[@georgiy0077]

Привет автор канала, вышла новая кастомная прошивка на этот прибор, будет ли видео по этому поводу?

[@project-326]

from the manufacturer or 3rd party?

[@georgiy0077]

@@project-326 github - rad pro

[@georgiy0077]

@@project-326 guthub

[@georgiy0077]

@@project-326 Hello, I managed to flash my Bosean fs5000)).It became very fast, although it began to show a lower dose of activity, but I think it just needs calibration.

[@project-326]

@@georgiy0077 How is the display? I must admit I found the GISSIO UI a little 'boring'. There is a calibration factor that can be changed in menu and also in the PC application. With the new firmware, does the device still work with the PC application?

[@Nachos-sk7od]

There is an interesting indie design model KB6011(2024) with a J305 tube plus a PIN diode as sensor on Taobao. I'm curious how the sensors work together. I've been using their old model KB4011 from 2021 and it's already the fastest in terms of response time among my other devices. I see that the tube is covered with metal foil, probably for energy compensation, but I don't have a proper source to test it. I'd appreciate it if you could review it sometime.😉

[@project-326]

I would have normally expected this to be able to add 'alpha detection' capabilities to the specification. In this case, I have no idea, alpha isn't included in the spec and its covered in the plastic case anyway. I guess I just looked at the same TaoBao advert as you, that has a a J321 & J305 tube wrapped in copper foil and kapton tape, which they seem to claim gives a 20% to 30% increase in sensitivity, which is clearly BS. Frankly, if I buy any more counters, my wife will kill me. PIN diodes aren't any where near as sensitive to gamma as a J305 GM tube, perhaps it is used to extend the lower energy boundary for betas or x-rays...? Maybe they realized that Measall made a name for including the PIN diode in their products and its just a marketing gimmik...

[@Nachos-sk7od]

@@project-326 Thank you so much for taking the time to provide a thorough explanation of this issue, which resolved my confusion about the PIN diode. I also read some literature and found that the PIN diode has a detection rate of less than 0.5% for relatively higher energy gamma rays, so it's really hard to justify the claim that it improves sensitivity.

[@Nachos-sk7od]

​@@project-326 Hope things are going well! A small update on using a PIN diode as a radiation sensor. Out of curiosity, I tried an open source project, stefanoaz/Particle-counter-V2 from Github (KZbin seems not to let me attach links directly) and it worked. The idea is simple, shield PIN diodes from light using grounded copper foil and amplify the pulse signal from radiation particles dumping energy into the diode. Using an oscilloscope I got 1-3 CPM from the background and 50-60 CPM from a thorium lantern mantle. The sensitivity was not impressive, but it was still exciting to be able to detect radiation without the presence of a Geiger-Miller tube (and high operating voltage).☺

[@The_sixth_extinction]

I bought this unit a month ago for about $110. Today it came but I can't get it to connect to the PC. Just not finding it. And I didn't find any app to download for this unit. Any suggestions anyone?

[@project-326]

I had the same problem, the company were really helpful when I mentioned this. You need to install the COM port driver and ask the company about the 'special' version of the software. The issue is the auto-detect of the COM port. f you look in device manager, you should see a COM port for this device whe it is plugged in (if not, the driver is the issue). When you open up the software, is your COM port listed in the drop-down on the top left? Originally, the software would hang when I pressed the DETECT button and I needed task manager to kill the process...

[@project-326]

OK, I just looked on-line at the product website and it is still the same version that hangs, I have mentioned to the company that this happens and they said that they will release a new version soon.

[@project-326]

Try the original version of the software: www.bosean.net/download Click the link on the bottom right named "Personal Radiation Dose Management System".

[@The_sixth_extinction]

@@project-326 Thanks for the reply. I wrote to the manufacturer's mail about this problem. We'll see what they reply. And it seems you tube is deleting my comments. because I replied to the previous one and it was deleted.

[@project-326]

@@The_sixth_extinction, not sure why, I just checked the comments on hold and none of yours are in there. $hitty YT algo...

[@daemon.running]

Do you go scrumping often? Im always looking for new samples to buy. I have a fairly hot sample from the 70s used by the ARC. I also have a Bicron Analyst with a pancake probe, as well as a newer digital meter. Im trying to get my hands on some DU 30mm rounds my vet buddy brought back from Iraq.

[@project-326]

We have been a couple of times, there are 2 videos about those visits on this channel, if you are interested... Wow - access to DU, something I would never get here. It would make for a great sample that can be dated via the ratio of the iostopes using a simple gamma ray spectrometer like the Radiacode or KC761...

[@merlin_V2]

Do you recommend the FS5000 or the FNIRSI GC-01?

[@project-326]

FS-5K is far better than the GC-01...

[@Oywind]

I see your fs 5000 have a 003 sensor, while mine have a 001 sensor. I don"t know what that means.

[@project-326]

curious, where did you see that in the video?

[@Oywind]

@@project-326 you see that in the pic of the pc screen when you show the software. On top of the screen.

[@project-326]

@@Oywind OK, I'll take a look. I know that they have changed back and forth between the J321 and other cheaper tubes at various times.

[@nickdoum]

@@project-326 I also received mine today, it has the J321 tube and the sensor is also 003. I might add the build date is June 2024 for my unit

[@Oywind]

​@@project-326 Do you think it's possible to order a j32i tube and replace it with the smaller tube that came with my fs 5000?

[@offroadbaddude1]

Hi! Great video again! I have two fnirsi gc-01 equip with the j321 geiger muller tube , should i consider buying the bosean fs-5000? Is that such an upgrade?? Or i would just waste my money??

[@project-326]

Personally, I would keep with the GC-01's, did you look at the RadPro firmware yet? It's worth a look...

[@offroadbaddude1]

@@project-326 not yet let me have a look, thanks for the cue

[@KarbineKyle]

Very well done! I might just buy a _Bosean FS-5000,_ but more for searching, finding, and detecting sources, rather than more precise measurements. I do use the _SEI Inspector USB_ (v 2.13) G-M counter, and it's an excellent device, despite being discontinued, with the newer _SEI Ranger._ These both use the LND 7317 "pancake" G-M tube, so they can detect alpha (> 2 MeV), beta (> 50 keV), and gamma (> 8 keV) through the mica window. They also have a scaler/timer function and built-in isotope efficiencies-which the values for can be changed, so you can measure isotopes in DPM and Bq. By the way, what are your thoughts on the _SEI Inspector USB_ and _SEI Ranger_ G-M counters? If you do know, please give your honest opinions, as I'm curious to know. I think they're great units! Thank you!

[@project-326]

Hi and thanks for the interesting comment. Sadly, I have zero experience with SEI devices, so cannot comment.

[@KarbineKyle]

No problem! Thank you anyways! I enjoy your videos! It's great to find a channel on someone who is knowledgeable in said subject! Unfortunately, A lot of others don't know what they're doing!

[@project-326]

@@KarbineKyle Life is a learning experience, and I'm still working on being an expert at anything...

[@luisarturpereira]

Nice review Very nice review. What about a comparison with the NR-750 ?

[@project-326]

I might look at the NR-750 at some point, but for the next few videos I want to focus on experiments using the equipment that I have already accumulated.

[@gblargg]

I've reviewed things like torque wrenches and similar and they have a calibration certificate that has a serial number, but everything else like the test results are the same as ones other people reviewing got.

[@psxtuneservice]

We get PU tubes with measured sizes if they are within tolerances.....they are ok but the numbers are all made up

[@latemarch2]

I bought one at Amazon. Is it possible to turn it off? It seems to be always on. Also is it possible to turn the screen on for more than 3 seconds? Hit any button and the screen comes on but only for 3 seconds no matter what any other settings are set from the set up menu.

[@latemarch2]

discovered that it is possible to turn it off if a screen is on and then the power button is pressed and held for 3 seconds. Still no way to have the screen stay on for more than 3 seconds.

[@project-326]

You need to go into the menu under backlight, there you can set the screen backlight time in second - I have mine set for 300 (5 mins) because I was making a video. You can also set the brightness here too. Remember to press the SAVE option after setting it.

[@TEXTSharp]

for me when i go to the listing, I get it listed for 89$, a big difference compared to the 48(68.7 without sale) that was shown in the vid.

[@bettertw]

I would like to ask an unprofessional question, can a nuclear radiation detector like this detect food contaminated by nuclear radiation?

[@project-326]

the issue with detection of radioactive contamination of food is that the sensitivity needs to be super high. Because you are consuming food, the damage that can occur is easily more than 1000x more serious than contamination of the same level but outside of the human body. Even for advanced lab situations, this is a non-trivial activity, usually needing a lot of shielding and a long measurement time to get a clean result. It is possible, but needs a lot of time and effort.

[@bettertw]

Thank you for your detailed explanation.😊😊

[@jdthewelder8308]

Great stuff. I just bought this on amazon "MOESAPU Geiger Counter Nuclear Radiation Detector Nuclear Water Seafood Detection Radiation Dosimeter with LCD Display, Portable Handheld Beta β Gamma γ X-ray Rechargeable Radiation Monitor Meter" it looks identical to the Bosean ... Are they the same???

[@project-326]

personally, I would only buy from their official store - Bosean has made a promise to only sell this device with the better J321 GM tube fitted!

[@jdthewelder8308]

I looked there, I think, and the price was 89 or something... I'll look again.

[@captainclaw3353]

I also wanted to buy one, but noticed a comment here saying they replaced the tube. It seems to be true, I contacted them asking about the sensor and they responded : "Recently replaced with a new Geiger tube." Maybe it's worth investigating.

[@project-326]

Really? When I got this one, just a over a month ago, I also asked the same question and was told that it used the J614. Perhaps the sales team are thinking of the lower cost models...

[@aldopezzilli8491]

ciao ,faccio collezione di minerali e abbiamo in programma ad una visita in una miniera di uranio abbandonata, ho comperato un dosimetro scintillograf radiacode 103, con 2 soglie di avviso, non riesco acapire a quanti microsivert devo tatare la prima di avvertimento e la seconda che mi dice che devo uscire subito. puoi aiutarmi grazie e complimenti per il canale

[@project-326]

Normally, 1uSv/h is a good level for the low level alarm. For a danger level, it really depends on how long you will be exposed. When I go rock hunting, I normally set the two thresholds to 10 uSv/h and 100 uSv/h.

[@aldopezzilli8491]

Ok tnx for informations

[@samoime1955]

great device for the price, as a review, but competition from the US that counters are several times the price is not sleeping, they decided to drop cylindric tube based counters! :-)

[@project-326]

which US designed devices are you referring to? Do you have some examples? Just trying to better understand your meaning. Thanks!

[@samoime1955]

@@project-326 the chck.

[@samoime1955]

@@project-326 the most affordable pancake tube GM, that with some extra equipment and duties was 800 US$, Inspector from s.e.international. Their swiss distributor for EU sold it under the double price. So their site shows they do no more offer cylindric GM counters, but just added an energy compensated pancake tube. However their cylinder tube model is available rebranded as medcom rad100 at 475 US$. It should be added about 20% duties for import to EU.

[@hubler11]

What do you think abaut the GQ gmc 320+ V4 or the other GQ Geiger counters?

[@markhart6743]

How do the readings compare to other better meters in terms of of accuracy?

[@project-326]

absolute accuracy is a hard thing to define with detectors like this. The tube will define the sensitivity but the detector can help with how it filters the data and the calibration factors it applies. I wish that I had a straightforward answer for you, it is an interesting subject and one that I am busy trying to learn more about myself. Your question is great, trying to answer it perfectly defines the issues with radiation detection equipment!

[@samjohns662]

Is it possible to detect alpha particles through the openings at the back with fs-5000?

[@project-326]

no, the glass of the tube will stop the alpha particles. Alpha's are pretty weak in terms of penetration, they can only make about 30mm of air...

[@samjohns662]

@@project-326 thank you for reply. Another question, Is it possible to modify the device in order to capture alpha particles? Something like extender with alpha particle detector with a plug. So that you can plug it to device when necessary and unplug it when not in use?

[@fdsman]

Great video, I was just about to purchase one until I got to your recommendations, and with my luck, the manufacturer will come out with an improved version not long after I buy mine. I think I'll hold out and see if they do in fact come out with an improved version.

[@project-326]

This is the story of my life, I bought the KC761 just before they released the 'B' version, the RC102, days before they reduced the price by $100, and so on. I bought this Bosean product myself (I have only ever been given one product for free), I don't tell the vendors that I do reviews until I need some help with technical information or if I really hate the product, just after I release the product so I can count the thumb's down numbers. For example, I now know that the team behind the Gamma scout only has 8 people world-wide, working directly for them. I hate that thing...

[@TerryLawrence001]

Great! Now I need another cheap counter :-))) I look forward to figuring out how to add an SD card logger to it, if it can be done.

[@project-326]

Hopefully, I won't need to review any more of these cheap devices.

[@Ni5ei]

@@project-326 Why not? It's cheap and your viewers appreciate it a lot 😎 I can't justify buying a Radiacode but a sub €50 toy that performs good is always welcome.

[@project-326]

@@Ni5ei Because my wife is beginning to think that I might be insane, having all of these detectors kicking around. Actually, I would like to focus on a some experiments in the next few videos. Finding interesting things that people can actually do with their low cost counters...

[@Ni5ei]

@@project-326 Ah sure, that's a great idea! Thanks!

[@PulsechainProfits]

Your reviews are great. Would this be suitable for test if food or water was contaminated with dangerous radiation? (say after a nuclear war)

[@project-326]

Testing food/water is difficult for any detector. Anything that will be consumed needs to be checked very closely and usually requires a fairly long duration test, even with a big expensive detector.

[@mistercohaagen]

If they added your suggestions, I'd buy one and wear it everywhere.

[@project-326]

If they implemented my suggestions, I'd eat my hat and make a video about my hat-themed meal!

[@mistercohaagen]

@@project-326 Well I subbed just now, so I'll watch that one too ; ) You're awesome bro.

[@YomAlwa3eed]

This or the FNIRSI GC-01 is better in your opinion?

[@project-326]

FS-5K, for sure.

[@rafaellavratti]

Hello, sir. Please, I'm looking for an affordable Geiger counter that can detect multiple types of radiation, including alpha particles. Do you have any recommendations?

[@project-326]

May I first ask a question, what do you see as the main reason for wanting to detect alpha particles?

[@rafaellavratti]

@@project-326 Yes, sir. I would like to detect radon and thorium radiation. Just to be super safe around an old house that I recently bought.

[@project-326]

@@rafaellavratti The best thing to get it that case is a gamma ray spectrometer, such as one of the Radiacode devices. It can detect the presence of those isotopes (Rn222 and Th232) by seeing what is happening in the decay chain. You are not going to be able to read above background looking at alpha from Th232 - the half-life of this isotope is longer than the current age of the universe. What you will be able to detect is the many associated gamma emissions that accompany alpha and beta decays in that decay chain. Rn222 is also difficult to detect directly as its half-life is less than 3 hours. Again, a gamma ray spectrometer will allow you to infer its presence due to the decay chain products. Alpha detectors tend to be pretty expensive, you will certainly pay more for a reasonable one compared to a Radiacode product and the alpha detector will have a lot less general use cases. Hope that helps...

[@rafaellavratti]

​@@project-326 Thank you so much for your response. I really appreciate it. If I may, I'd like to ask another question to take advantage of your expertise. Given that the Bosean FS-5000 is quite affordable, could it detect a hidden source of radiation in this old house that I bought, such as a piece of iron or steel that got contaminated, or any other object exposed to radiation? Do you think I would really need a GR spectrometer like the Radiacode, or would the FS-5000 suffice for this purpose? Thank you for your time and patience.

[@project-326]

@@rafaellavratti Yes, the FS-5K is a very good detector, but you will need to balance the sensitivity that you need. GR spectro like the RC102/3 will be about 30 to 50 times more sensitive than the FS-5K. This translates to how long it takes to be able to get a background reading. The time needed is pro-rata as the sensitivity.

[@Catalin_C97]

Any idea if the Bosean FS 600 is any good?

[@project-326]

I think it uses the J442 tube, so less sensitive to gamma and no beta sensitivity.

[@lightingnut]

I have been looking for an easy to use Geiger counter that I can hook up to the internet and stream the data. Anyone know of such a device?

[@project-326]

I'm sure there must be industrial solutions that do that, though I imagine that they are going to be at the pricing levels that match their customers expectations, ie the IAEA (UN) and nuclear power plant operators...

[@RadManiac]

Hi, do you know about radioactive soviet, american radium dialed switches, would you make a video obout them ?

[@project-326]

What sort of switches are you meaning? Do you have a link to something I can view to understand what this is? Thanks!

[@RadManiac]

@@project-326 kzbin.info/www/bejne/h2jYqnlpasx_bassi=uTcjPrauh01bcyNZ, those ssitches are from 1920 to 1962. They were dialed with radium to glow indark and they were used in militaty.

[@RadManiac]

@@project-326 i have few of that switches.

[@alxRo]

What Is your opinion Sir about cem DT-9501 geiger counter?? that detects a particles and has removable batteries also thanks in advance!!!

[@project-326]

I have never tested that particular unit. I do own some other CEM instruments and my observation is that the UI for these device is very simple, a little too simple by today's standards.

[@alxRo]

@@project-326 thank tou very much Sir !!!! I have subscribed your fantastic channel if you ever make a video of it i whould be glad to see it !!!!

[@alxRo]

@@project-326 they sell this in Germany for 400€ in conrad store as VOLTCRAFT RM-400 Geiger counter thanks in advance!!!!

[@project-326]

@@alxRo there are no fans here, just friends! 🙂

[@moth.monster]

I wonder how the device itself communicates as far as what it communicates exactly over serial is. Might not be too hard to write a custom interface library. I've been curious about getting a Geiger counter, I may pick one up.

[@project-326]

The reason I made this video, was exactly for people like yourself. Each time I review one of my counters, I always get asked, "What is the best cheap one?", hopefully I have finally answered that question! The next thing you will want, is sources to test your new counter. Then you will probably start to ask some interesting questions and want to perform some experiments that you can do yourself. Before you know it, you have a new hobby. Have fun!

[@quasiZote]

Has anyone bought it recently with the link to the Aliexpress Bosean Official Store (used in the description of this video)? Does it still have a J321 tube? afaik it was substituted with a cheaper tube and its quality dropped. So do you still recommend buying via the link in description? I really enjoy your reviews, very well made. Thank you!

[@project-326]

their AliExpress store have a written promise to ship with the J321, which is basically due to the video I made putting some pressure on them.

[@quasiZote]

​@@project-326 So I ordered one and got it last week. It seems to be as good as presented in your video and I'm very happy. I checked the tube too, J321 as promised. Thank you so much for your work and dedication!

[@project-326]

@@quasiZote for the price, its a great little counter. The company also seemed to have responded to my criticisms too...

[@bettertw]

你真的很棒

[@maxobe5120]

you can install rad pro on these now, makes it probably the best amateur geiger counter out there

[@project-326]

I knew that Gissio was working on this, but thanks for letting me know that its ready now. I can't wait to see the results!

[@alastairbrickell8813]

How do you do the install and why is it worth having? I've just ordered the FS 5000 ($99NZ).

[@project-326]

@@alastairbrickell8813 My personal opinion here: The RadPro software is really good BUT - it doesn't work with the Bosean PC application and having the ability to offload data is one of the best features of this product (take a look at my beta back-scattering experiment video I did using the FS5000). I know that there is a way to do that in RadPro with command line scripts, etc, but frankly the convenience of an app keeps be from changing to the RadPro on this device. For crappy counters like the FNIRSI GC-01, for sure, the RadPro is a great upgrade, there isn't any useful features to lose...