That's not the worst part. There is an old Soviet radiometer DP-63A. He has a VERY radioactive instrument scale. There are a lot of radium salts there (once the scale glowed in the dark). This school gets very dirty and pollutes everything it touches.
As a subscriber of W&S93 he has always been very controversial in many of the things he says or do, in fact the gas mask collecting community saw him badly for that. It has always seemed crazy to me how he can regularly use a dental x-ray machine so often, I don't see it as safe at all. And the CBRN police already paid him a visit. Btw amazing work mate!
when i first started collecting masks i was watching his videos kinda just taking that information in. but after like four years of collecting now i can see how much misinformation the dude is spreading around with his videos... he does a lot of dumb shit with his radioactive sources as well. glad i'm not his neighbour!
I'm working on a video that has both the KC761 and the RC102 getting a good dose of Beta from this source. Clearly, being gamma spectrometers, they don't see too much from a beta source though...
@studio326- I saw a video a while ago by neptunium and I believe it was a radiacode 101 but it could detect the gamma from polonium 210 (803 keV) so I wonder if strontium 90 has its own gamma line (block the beta to prevent bremmstralung) because as far as I know it should since nothing is a pure alpha or beta source since the atom still needs to calm down
@@The-One-and-Only100 I'm kind of honored to have Neptunium as one of my small band of subscribers, he is a smart guy and a seriously talented experimenter! You will have to make seriously long baseline measurements of Po-210 to be able to see any gamma lines and those only occur one out of about 100K decays as a statistical average. I have not yet seen anything that even mentions ANY probabilities for gamma emissions from Sr-90 decay. Given the very short decay chain, perhaps if they do exist as a small ppb type statistic, they are not measurable, even shielded...?
@studio326- what I have in mind for an experiment that you are now able to do is have a thick plate of aluminum on top of the source so all the beta is blocked (test with a geiger counter) then if it's at your background then place the radiacode on top of the plate and wait awhile for a good spectrum then for redundancy use the kc761 and compare the two
@@The-One-and-Only100 The issue with all long baseline shielded measurements is that the shielding material will always contain some radioisotopes, even if the shielding material is from pre-1945. I'm in the process of doing some beta experiments for a video I'm working on, I'll have a look at this a bit more. Who knows, perhaps something interesting will be found, I just worry that the huge Bremsstrahlung continuum will hide anything useful...
Thanks for another well-done video! The circuitry is quite impressive. It's fascinating they went to the trouble of using an electroluminescent backlight, rather than a cheap incandescent bulb. Although I guess it ensures the bulb won't need to be replaced for the foreseeable life of the instrument.
Radium is a very unusual check source, normally this is Sr-90 or Cs-137 due to the very short decay chains. Ra-226 is on the Uranium decay chain, so there are a lot of different products in the isotope mix, each with their own modes of decay and half-lives. What made you choose Ra-226 as the check source?
Yeah, you’re kind of right on weapons and stuff. He isn’t very bright countless pictures of him laying radium out on his carpet. Holding. Dp-2 sources dissolving the radium etc
I notice that he has really bloated out in the last couple of years, I do hope that isn't from mishandling these kind of things (hopefully just 'pandemic tummy'). Radium is about the scariest thing you could accidentally ingest with the obvious exception of Polonium 210, those old radium dials often release a lot of powder as they age...
When I got some thorium lantern mantles I kept them in the original bag, and put another bag over them. I'm the careless type so I am extra-careful with radioactive sources.
Thanks for the insight on this piece. And yeah, it's important that we have information on Radioactivity... in sight of some dudes with them sources...
@@project-326 I kind of wish I hadn't watched that video, now I'm assuming that if you are that careless with handling you will be equally careless with decontamination protocols or lack thereof. These people walk amongst us!
The blue electrolytic capacitor at 3:47 min shows the label 84.9, the capacitor at 3:51 min shows 84.8. This means that the device was not built before 1984 - so it is at most 40 years old. It's surprising that no printed photos were used in the manual.
The photographs are a mash up of two units: the older one that I bought (all video footage and some of the stills), and some still photography from a newer unit that belongs to one of the subscribers (who is also in China). The newer unit gave much nicer images for those close ups in the tear-down section. The manual for my unit has a calibration stamp in it from 1979, I didn't get to see the booklet from the newer unit... This is how I found out that the leather pouches were for the ones issued to officers, mine had a canvass bag. I hope that helps answer your question?
@@dg0mg Well done for spotting the caps! Glad to know I have such eagle eyed subscribers, clearly you don't just subscribe to any old channel, so it gives me a boost to know that you do!
@@project-326 I run a forum on this topic in Germany and always have to know what's new. You're closer to some of the "Far Eastern" news - so that's always interesting. Old devices are also exciting; in the past, different circuit technology was used. Just today Max Midas released a video of a Russian device that had no special high voltage generation - it simply used a 450 volt battery. On your Type 75, the electroluminescence light is a rarely used feature. But a military device from the former GDR (the RR66) also has such a scale illumination too, but is operated with 2 D cells, not only one.
4:30 The kind of circuit design here is like modern assembly code that does a bunch of things with a tiny bit of code, including being all cycle-timed to decode some external signal coming in.
As. Always, a very good made video. I Like your transition graphics... That's a real doomsday device... BTW I have purchased the KC176B and sold the old one. It seems they're abandoning the old version so I used the discount.pls keep making videos!
@@project-326where in his video did "Surviving the apocalypse" do anything stupid? He's not such a great example of stupid behavior, since he bothers with glass screens and genuinely seems a little scared of the DP-2 source lol. Are we talking about his handling of the B-8 or DP-2 source? Because the former isn't something that requires much care or shielding (the latter being around 100x more active)
Hello, do you know if all dp-75 counters have strontium in them? Also do you have a link that is not chinese where i can buy those? Thank you brother and keep up the good work!!
I don't know anything about the Russian DP-75, sorry. Unfortunately, I don't know of an easy way to be able to buy these in the west. My suggestion is to befriend someone who lives here in China.
Ouch, I thought of Sr-90 being as being pretty nasty stuff, but having folk running around with Cf-254 would be really scary. Mind you, they wouldn't have long to play with it, the half-life is around 60 days. The fission and decay products aren't exactly nice either. Mind you, back in the '50s there kids toys like the Gilbert Atomic Energy Laboratory...
@@schautamatic Yes, that was definitely a "rich kids toy". I'm guessing that parents would buy it so that smart kids would hang out with their rich kids...
I don't remember if you corrected yourself in your subsequent videos, but radiation from beta sources is not measured in microsiverts. You can use becquerels or "number of decays per square centimeter". Or you can add "conditionally" to the microsiverts. For example, the dose rate of this beta source is 2 microsiverts, conditionally.
Yes your are correct, but most devices cannot differentiate and just use uSV/h. My alpha/beta spectro displays using Sv/h/cm2, which again is making assumptions, but translating that back to a GM tube is really not easy.
Great video. Just keep in mind that when comparing the dose on contact with a rough point source to a full body dose, that the dose from the source is extremely localized, and the effective dose is low (hundreds of times lower than the full body dose). This, coupled with the fact that Sr-90 delivers near zero deep dose, means that holding the Sr-90 source in your hand for instance, would expose you to very little effective dose (probably less than 1uSv/h).
For sure, this is not a whole body dose that W&S93 is exposing himself to, but actually the point is, he is literally touching the Sr90 metal foil. The naked source will have a foil cover, but this is a very old source, from the 1980's and corrosion is always a concern. Personally, I treat this source with the upmost of care. I plan everything, and every step (and practice the steps) from when the source is taken from the lead box, until it is place back into the box again. I have kept source holder is intact, its really handy with the spring loaded cover. As soon as I release the clamp I use to open the source, the cover just springs back into place and the source is in a safe condition again. I think that the 1uSv/h rate you estimated is about right for a gamma source but for beta, it is likely to be about 10x of that. Whilst the Seivert is a handy scale for whole body doses, localized exposure also problematic. Physically touching the naked source is kinda dumb...
@@project-326 why would beta be 10x more? I'm talking about effective dose here (the equivalent of a full body dose). Betas have poor penetrating power and hence don't even contribute to deep dose. The only area exposed would be a few grams of tissue right in front of the source, and hence the dose is way lower than a gamma source with similar dose rates (due to the radiation penetrating into deep tissues). Assuming your source has an activity of around 25uCi of Sr-90 (50uCi SrY-90), then the decay heat would be around 160nW (5.85x10^-4 J/h), since each beta decay yields 1.1MeV of energy (combined Sr and Y). Since only one side of the source can face you at any time,
@@inductivelycoupledplasma6207 That is a fantastic reply, I will work through the calculations and learn! I was assuming a weighting factor of 10 for beta, but I just looked it up and (according to Wikipedia) it is the same as for gamma, ie 1. Yes, the whole body effective dose is low, it is a small source, just pretty bright. But I'm sure you are not suggesting that handling this type of object in the way that W&S93 does is a reasonable way to carry on (he routinely handles this source in a fair number of his videos)? You are correct about the geometry of the source holder, you can probably divide by 3 (ie 120 deg)...
@@project-326 thanks for replying! They were just ballpark calculations and I made many assumptions along the way, but they should give at least some idea of the actual stochastic risk from such a source (which is extremely low). Of course, the main risk with SrY-90 sources isn't cancer, but rather exposure to the eyes and potential cataracts (albeit highly unlikely unless you use the source as a monocle). The main thing that bothered me about Weaponsandstuff93 wasn't the fact that he exposed himself to excessive beta radiation (not ALARA, but still not a big deal). What bothered me was the fact that he tore the window of the source open, spilling source material on his keyboard and contaminating some of his detectors at the same time. He then proceeded to place the mangled source on his carpet in a later vid (along with a naked DP-63-A radium scale). That guy is completely clueless when it comes to contamination. I don't even want to think about the fact that I've seen him place a 60uCi pyrotronics Am-241 source on his carpet too (these leak a lot and Am-241 is about 10x more toxic than Ra-226 through inhalation, and 1000x more toxic than Sr-90). 😬
I just realized a mistake in my last comment, when I said the ratio should be 1/3 because the angle is 120 degrees. This is wrong, I should have used solid angles. A Cone with an apex angle of 120 degrees presents a solid angle of exactly pi steradian, so with 4.pi steradian in full-space, the factor should be division by 4 (not 3). Was taking a crap, when this just popped into my head... :-)
Actually a lot of British (and other NATO) devices also use custom batteries. I never understood the purpose of that, these military devices are always huge, so lots of room for any size of standard batteries.
@@project-326 Moreover, there are also devices with batteries for non-standard voltage, for example 11.5 volts. I just bought such an SRP-2 device the other day. A scintillation device for geological exploration manufactured in 1971.
@@vladi_g It's just hard to imagine what was going through the heads of the engineers that came up with this stuff, perhaps in 1971 transistors were really expensive and they wanted to avoid using a regulator, or more probably the company wanted to lock in the customer to buy their 'special' batteries...
@@project-326 It seems to me that in my case, since this is geological exploration, people are out of civilization for a long time. The engineers just took the most capacious batteries they had so that the device would work as long as possible. We must pay tribute, the device also works from a modern 9 volt battery, but not for long. So the converter and voltage stabilizer can operate within a fairly wide range of power supply.
@@rhydar I'll see what I can do. Just not sure I can hide a purchase 8 tonnes of steel and the equipment to melt it from the wife. I have a laundry list of vids to get done, KC761B, Beta Spectroscopy, etc. Then the day job, 3 young kids...
I have included a link to the TaoBao store in the description, but TaoBao doesn't work outside of Mainland CN. I'll ask if there are any email contacts they can supply and post those here.
@@twsteele1977 It is the easiest language to learn, no conjugation, no plurals, no past, present or future tense... But if you want to learn it fast, head out here to China and stay away from English speakers, trust me, you will learn so fast that you will be both amazed and proud. That is basically what happened to me.
@@project-326 I tried to order one of these Type-75s off a Taobao proxy buyer service, only for them to finally get back to me yesterday saying the seller says the price is Y1450. I was like um, the page says 125.16? Feckin scam. I'd love to get one though..
@@project-326how old is your gamma scout? The newer ones are much better (still PoS for €500 of "quality German engineering). Mine doesn't seem to crash, and response stays linear up to around 5mSv/h (starts to saturate severely above 10mSv/h, but doesn't drop to zero).
I find it amusing that the most radioactive thing in a collection might be the Geiger counter itself.
there is certainly a big dose irony about that fact!
That's not the worst part. There is an old Soviet radiometer DP-63A. He has a VERY radioactive instrument scale. There are a lot of radium salts there (once the scale glowed in the dark). This school gets very dirty and pollutes everything it touches.
Love this channel! The humour is brilliant!
I agree. [Bs]🤣
As a subscriber of W&S93 he has always been very controversial in many of the things he says or do, in fact the gas mask collecting community saw him badly for that.
It has always seemed crazy to me how he can regularly use a dental x-ray machine so often, I don't see it as safe at all. And the CBRN police already paid him a visit.
Btw amazing work mate!
I hope he made a video of getting busted?
@@project-326 That for sure will be an interesting news.
when i first started collecting masks i was watching his videos kinda just taking that information in. but after like four years of collecting now i can see how much misinformation the dude is spreading around with his videos... he does a lot of dumb shit with his radioactive sources as well. glad i'm not his neighbour!
I loved the roasts on weaponsandstuff93 😂
Wish that the radiacode was in the video because I have one, but I don't have strontium 90
I'm working on a video that has both the KC761 and the RC102 getting a good dose of Beta from this source. Clearly, being gamma spectrometers, they don't see too much from a beta source though...
@studio326- I saw a video a while ago by neptunium and I believe it was a radiacode 101 but it could detect the gamma from polonium 210 (803 keV) so I wonder if strontium 90 has its own gamma line (block the beta to prevent bremmstralung) because as far as I know it should since nothing is a pure alpha or beta source since the atom still needs to calm down
@@The-One-and-Only100 I'm kind of honored to have Neptunium as one of my small band of subscribers, he is a smart guy and a seriously talented experimenter! You will have to make seriously long baseline measurements of Po-210 to be able to see any gamma lines and those only occur one out of about 100K decays as a statistical average. I have not yet seen anything that even mentions ANY probabilities for gamma emissions from Sr-90 decay. Given the very short decay chain, perhaps if they do exist as a small ppb type statistic, they are not measurable, even shielded...?
@studio326- what I have in mind for an experiment that you are now able to do is have a thick plate of aluminum on top of the source so all the beta is blocked (test with a geiger counter) then if it's at your background then place the radiacode on top of the plate and wait awhile for a good spectrum then for redundancy use the kc761 and compare the two
@@The-One-and-Only100 The issue with all long baseline shielded measurements is that the shielding material will always contain some radioisotopes, even if the shielding material is from pre-1945. I'm in the process of doing some beta experiments for a video I'm working on, I'll have a look at this a bit more. Who knows, perhaps something interesting will be found, I just worry that the huge Bremsstrahlung continuum will hide anything useful...
Thanks for another well-done video! The circuitry is quite impressive. It's fascinating they went to the trouble of using an electroluminescent backlight, rather than a cheap incandescent bulb. Although I guess it ensures the bulb won't need to be replaced for the foreseeable life of the instrument.
It is a really nice piece of design work, I really enjoyed figuring it out!
The EL probably uses less power than a bulb. Too bad they didn't let the check source leak a little, then it could glow on its own without a battery!
I used to ship all the geiger counters I refurbished with a radium calibration refrence source. Calibration valid for at least 100 years 😅
Radium is a very unusual check source, normally this is Sr-90 or Cs-137 due to the very short decay chains. Ra-226 is on the Uranium decay chain, so there are a lot of different products in the isotope mix, each with their own modes of decay and half-lives.
What made you choose Ra-226 as the check source?
Yeah, you’re kind of right on weapons and stuff. He isn’t very bright countless pictures of him laying radium out on his carpet. Holding. Dp-2 sources dissolving the radium etc
I notice that he has really bloated out in the last couple of years, I do hope that isn't from mishandling these kind of things (hopefully just 'pandemic tummy'). Radium is about the scariest thing you could accidentally ingest with the obvious exception of Polonium 210, those old radium dials often release a lot of powder as they age...
That said, I am kind of expecting an army of his fans to start trolling the comments section of this video soon.
he is not the only one... ruclips.net/video/-porXMRg_BI/видео.html
When I got some thorium lantern mantles I kept them in the original bag, and put another bag over them. I'm the careless type so I am extra-careful with radioactive sources.
@@gblargg Very wise, the coating on the mantles is easily turned in to a powder...
In America you can just buy cesium sources much stronger than that without any shielding in the mail😭
Thanks. Great video.
Thanks for the insight on this piece. And yeah, it's important that we have information on Radioactivity... in sight of some dudes with them sources...
he is not the only guy that takes horrible risks: ruclips.net/video/-porXMRg_BI/видео.html
@@project-326 I kind of wish I hadn't watched that video, now I'm assuming that if you are that careless with handling you will be equally careless with decontamination protocols or lack thereof. These people walk amongst us!
@@ryanmckenna6763 For W&S93, I think "careful decontamination" and "responsible disposal" means flushing twice.
The blue electrolytic capacitor at 3:47 min shows the label 84.9, the capacitor at 3:51 min shows 84.8. This means that the device was not built before 1984 - so it is at most 40 years old. It's surprising that no printed photos were used in the manual.
The photographs are a mash up of two units: the older one that I bought (all video footage and some of the stills), and some still photography from a newer unit that belongs to one of the subscribers (who is also in China). The newer unit gave much nicer images for those close ups in the tear-down section. The manual for my unit has a calibration stamp in it from 1979, I didn't get to see the booklet from the newer unit... This is how I found out that the leather pouches were for the ones issued to officers, mine had a canvass bag.
I hope that helps answer your question?
@@project-326 Yes, of course - thank you for the explanation!
@@dg0mg Well done for spotting the caps! Glad to know I have such eagle eyed subscribers, clearly you don't just subscribe to any old channel, so it gives me a boost to know that you do!
@@project-326 I run a forum on this topic in Germany and always have to know what's new. You're closer to some of the "Far Eastern" news - so that's always interesting.
Old devices are also exciting; in the past, different circuit technology was used. Just today Max Midas released a video of a Russian device that had no special high voltage generation - it simply used a 450 volt battery. On your Type 75, the electroluminescence light is a rarely used feature. But a military device from the former GDR (the RR66) also has such a scale illumination too, but is operated with 2 D cells, not only one.
11:30 They've already did.
4:30 The kind of circuit design here is like modern assembly code that does a bunch of things with a tiny bit of code, including being all cycle-timed to decode some external signal coming in.
Assembly code is what hardware engineers call (real) firmware.
😂@@project-326
As. Always, a very good made video. I Like your transition graphics... That's a real doomsday device... BTW I have purchased the KC176B and sold the old one. It seems they're abandoning the old version so I used the discount.pls keep making videos!
Amazing. What a silly man to just play around with any unshielded source like that.
there are lot of people doing the same... ruclips.net/video/-porXMRg_BI/видео.html
I wonder if he washed his hands before dinner? 💀
@@ryanmckenna6763 Of course he did, his Mum is really strict on that!
@@project-326 "Mum! Can we have radiation source on our chips for dinner tonight?"
@@project-326where in his video did "Surviving the apocalypse" do anything stupid? He's not such a great example of stupid behavior, since he bothers with glass screens and genuinely seems a little scared of the DP-2 source lol. Are we talking about his handling of the B-8 or DP-2 source? Because the former isn't something that requires much care or shielding (the latter being around 100x more active)
“Let me show you its features”
Hello, do you know if all dp-75 counters have strontium in them?
Also do you have a link that is not chinese where i can buy those?
Thank you brother and keep up the good work!!
I don't know anything about the Russian DP-75, sorry. Unfortunately, I don't know of an easy way to be able to buy these in the west. My suggestion is to befriend someone who lives here in China.
Free...Sr-90. How Cold War '60s. 🙄 Now if freebies of Cf-254 were offered with this, I MIGHT be a bit more interested! 😀☢️☢️☢️
Ouch, I thought of Sr-90 being as being pretty nasty stuff, but having folk running around with Cf-254 would be really scary. Mind you, they wouldn't have long to play with it, the half-life is around 60 days. The fission and decay products aren't exactly nice either.
Mind you, back in the '50s there kids toys like the Gilbert Atomic Energy Laboratory...
Yeah, and at $50 a pop back then, way out of the reach of most kids (I mean their parents)! 💸💸💸
@@schautamatic Yes, that was definitely a "rich kids toy". I'm guessing that parents would buy it so that smart kids would hang out with their rich kids...
I don't remember if you corrected yourself in your subsequent videos, but radiation from beta sources is not measured in microsiverts. You can use becquerels or "number of decays per square centimeter". Or you can add "conditionally" to the microsiverts. For example, the dose rate of this beta source is 2 microsiverts, conditionally.
Yes your are correct, but most devices cannot differentiate and just use uSV/h. My alpha/beta spectro displays using Sv/h/cm2, which again is making assumptions, but translating that back to a GM tube is really not easy.
Great video. Just keep in mind that when comparing the dose on contact with a rough point source to a full body dose, that the dose from the source is extremely localized, and the effective dose is low (hundreds of times lower than the full body dose). This, coupled with the fact that Sr-90 delivers near zero deep dose, means that holding the Sr-90 source in your hand for instance, would expose you to very little effective dose (probably less than 1uSv/h).
For sure, this is not a whole body dose that W&S93 is exposing himself to, but actually the point is, he is literally touching the Sr90 metal foil. The naked source will have a foil cover, but this is a very old source, from the 1980's and corrosion is always a concern.
Personally, I treat this source with the upmost of care. I plan everything, and every step (and practice the steps) from when the source is taken from the lead box, until it is place back into the box again. I have kept source holder is intact, its really handy with the spring loaded cover. As soon as I release the clamp I use to open the source, the cover just springs back into place and the source is in a safe condition again.
I think that the 1uSv/h rate you estimated is about right for a gamma source but for beta, it is likely to be about 10x of that. Whilst the Seivert is a handy scale for whole body doses, localized exposure also problematic. Physically touching the naked source is kinda dumb...
@@project-326 why would beta be 10x more? I'm talking about effective dose here (the equivalent of a full body dose). Betas have poor penetrating power and hence don't even contribute to deep dose. The only area exposed would be a few grams of tissue right in front of the source, and hence the dose is way lower than a gamma source with similar dose rates (due to the radiation penetrating into deep tissues). Assuming your source has an activity of around 25uCi of Sr-90 (50uCi SrY-90), then the decay heat would be around 160nW (5.85x10^-4 J/h), since each beta decay yields 1.1MeV of energy (combined Sr and Y). Since only one side of the source can face you at any time,
@@inductivelycoupledplasma6207 That is a fantastic reply, I will work through the calculations and learn!
I was assuming a weighting factor of 10 for beta, but I just looked it up and (according to Wikipedia) it is the same as for gamma, ie 1.
Yes, the whole body effective dose is low, it is a small source, just pretty bright. But I'm sure you are not suggesting that handling this type of object in the way that W&S93 does is a reasonable way to carry on (he routinely handles this source in a fair number of his videos)?
You are correct about the geometry of the source holder, you can probably divide by 3 (ie 120 deg)...
@@project-326 thanks for replying! They were just ballpark calculations and I made many assumptions along the way, but they should give at least some idea of the actual stochastic risk from such a source (which is extremely low). Of course, the main risk with SrY-90 sources isn't cancer, but rather exposure to the eyes and potential cataracts (albeit highly unlikely unless you use the source as a monocle). The main thing that bothered me about Weaponsandstuff93 wasn't the fact that he exposed himself to excessive beta radiation (not ALARA, but still not a big deal). What bothered me was the fact that he tore the window of the source open, spilling source material on his keyboard and contaminating some of his detectors at the same time. He then proceeded to place the mangled source on his carpet in a later vid (along with a naked DP-63-A radium scale). That guy is completely clueless when it comes to contamination. I don't even want to think about the fact that I've seen him place a 60uCi pyrotronics Am-241 source on his carpet too (these leak a lot and Am-241 is about 10x more toxic than Ra-226 through inhalation, and 1000x more toxic than Sr-90). 😬
I just realized a mistake in my last comment, when I said the ratio should be 1/3 because the angle is 120 degrees. This is wrong, I should have used solid angles. A Cone with an apex angle of 120 degrees presents a solid angle of exactly pi steradian, so with 4.pi steradian in full-space, the factor should be division by 4 (not 3). Was taking a crap, when this just popped into my head... :-)
Non-standard batteries have always been used in Soviet army devices, which are now impossible to find, in principle, only in a museum.
Actually a lot of British (and other NATO) devices also use custom batteries. I never understood the purpose of that, these military devices are always huge, so lots of room for any size of standard batteries.
@@project-326 Moreover, there are also devices with batteries for non-standard voltage, for example 11.5 volts. I just bought such an SRP-2 device the other day. A scintillation device for geological exploration manufactured in 1971.
@@vladi_g It's just hard to imagine what was going through the heads of the engineers that came up with this stuff, perhaps in 1971 transistors were really expensive and they wanted to avoid using a regulator, or more probably the company wanted to lock in the customer to buy their 'special' batteries...
@@project-326 It seems to me that in my case, since this is geological exploration, people are out of civilization for a long time. The engineers just took the most capacious batteries they had so that the device would work as long as possible. We must pay tribute, the device also works from a modern 9 volt battery, but not for long. So the converter and voltage stabilizer can operate within a fairly wide range of power supply.
@@project-326 It is mainly because that noone would steal them. Can't easily be used in consumer goods.
Ah - but what dose do you get on your precision engineered German professional geiger counter though (or has it already had its last adventure)?? 🤣
Ah, I'm glad you thought to ask... Video of that is coming up next.
@@project-326 I'm hoping for a Terminator 2 type scene, where you've got a vat of molten metal, and the GammaScout gets lowered in, dissolving away!
@@rhydar I'll see what I can do. Just not sure I can hide a purchase 8 tonnes of steel and the equipment to melt it from the wife.
I have a laundry list of vids to get done, KC761B, Beta Spectroscopy, etc. Then the day job, 3 young kids...
You big spoil-sport you! Let him have fun disassembling the protective source holder if he wants to! ☠☠☠
Mmmm, Bremsstrahlung! Anybody able to get couple of those devices to CzechRepublic?
I have included a link to the TaoBao store in the description, but TaoBao doesn't work outside of Mainland CN. I'll ask if there are any email contacts they can supply and post those here.
@@project-326 Thanks, it would be awsome, we have a nice club of surveyers and... well, we need this!
@@project-326 Any news?
:c They wont ship to UK due to "relevant laws, regulations or Taobao policies"
You will need to make friends with someone in China to help you with that...
@@project-326 im trying to learn the language now 🤞 hopefully I'll be able to move there one day
@@twsteele1977 It is the easiest language to learn, no conjugation, no plurals, no past, present or future tense...
But if you want to learn it fast, head out here to China and stay away from English speakers, trust me, you will learn so fast that you will be both amazed and proud. That is basically what happened to me.
@@project-326 how fluent would you reccomend one be before moving?
@@twsteele1977 Spend a couple of weeks reading some phrase books and a little grammar book, then come for a holiday. Less is often better.
BR-6 and HTT-60 maxed out! Hehehe.
I didn't show what it did to the Gamma Scout (PoS), I'm saving that for the next vid.
@@project-326 I tried to order one of these Type-75s off a Taobao proxy buyer service, only for them to finally get back to me yesterday saying the seller says the price is Y1450. I was like um, the page says 125.16? Feckin scam. I'd love to get one though..
@@project-326how old is your gamma scout? The newer ones are much better (still PoS for €500 of "quality German engineering). Mine doesn't seem to crash, and response stays linear up to around 5mSv/h (starts to saturate severely above 10mSv/h, but doesn't drop to zero).
@@inductivelycoupledplasma6207"much better?" We will just have to agree to disagree on that point. 🙂
@@project-326 haha, I'd say the fact that it doesn't crash is a massive improvement. Doesn't change the fact that it's a PoS tho 😁