Mate, you have me hooked. I think I'll skip eating so I c a n buy some basic equipment. I scanned you tube but ur the best

Yes, I did. I usually buy direct from manufacturers. Have you called? Phone seems to work best with companies. When I email most companies I am either never replied to or after days. I am not sure why this is, but a phone call seems to fix everything. I would assume they sell internationally. It probably depends on the country.

Hey Tom, great video! I just ordered an eberline thermofischer spa-3 to hook up to my Ludlum model 3! At 900 volts on my Ludlum model 3 the spa-3 reads a typical background of 18,000-22,000 CPM! absolutely insane lol I work around old warbirds sometimes which often have radium instruments, my setup can detect if an aircraft has a cockpit full of radium instruments from about 15 feet away on the outside of the aircraft, and I have a 44-9 as well for detecting contamination

The CRM100 and the Gamma Scout both use the same tube: LND712 tube. This means that they have the same sensitivity. Between them, the gamma scout has better features but costs a little more. The CRM100 is pretty rugged. Have you looked at a PRM9000 or Inspector? They are massively more sensitive, but cost a little more. The CRM100 or GS are both fine for rock collecting. My first Geiger counter was a CRM100.

I have several NaI(Ti) scintillation probes on par with the 44-2. Also have the 44-3 low energy scint. Other than spectrometry use, I have found little use for the 44-2 as a stand alone probe. Since our hobby is very similar, what other regularly occurring uses have you found that your 44-2 does better than a 44-3? For me, the 44-3 as a stand-alone (non-spectrometry) scint is perfect for all around hobby use.

It's under the cal port. You have 6 potentiameters: DIS, HV, 1k, 100, 10, and 1. I have not messed with mine. I am going to a uranium mine august 4th and I need my unit to be 100%. After that, if I mess with it and screw it up... I would have time to get it fixed. As you have probably noticed, I am not as DIY as the rest of you. I code and calculate. Anything I touch, mechanically speaking, breaks :)

This is really a hard answer for two reasons: 1. I am not qualified to say what is safe and it boils down to how much risk will you take? 2. CPM cannot be a measure of dose, by itself. I can tell you that I personally will hold a 250,000 CPM check source in my bare hand and I feel safe. But... that is my opinion and there are dozens of variables!

Thanks for the video, I hope to buy 3-98 with 44-17 probe next week. Would you be so kind to make a video about spectrography using these NaI scintillation probes? Where do you connect the probe to do nuclide identification?

Sure! Ludlum sells in Europe.

Thanks!

I love the UK. My family left it in 1640 +/- and came to the USA (well... it was a colony at the time lol). The coast should have some nice stuff! My book has some scenes which take place in what is now Cromer, UK, which is not far from you. Of course those scenes occur in 5500 BCE lol

The CDV700 is a special case with a special method. Other Geiger counters require a strong source which I do not have. I'll check and see if I can find anything on it. Normally, I just send my units to the manufacturer and pay the $50-$100 for a professional job.

As a RSO for 10 years... ludlum is always been a go-to brand for me... watched a few of your videos tonight.... kinda fun... I guess I've worked with too much radioactive material I dont even think about rainwater or fukushima (well other than our employees that actually are in Japan and work in the zone).. :)

@Anti-proton

10 жыл бұрын

I love my Ludlum, but gamma spectroscopy is my main hobby. The ludlum provides a nice NaI(Tl) probe for detaching and connecting to a field portable MCA. I know a few RSO's myself. Keep up the good work!

@KarbineKyle

5 жыл бұрын

I'd love to get a Ludlum someday! I have an Eberline, which is pretty similar in design and functionality. I also have the Inspector USB Geiger-Müller counter, which in my opinion is the best _digital_ G-M counter.

Hi Tom, does the 44-2 work well for spectroscopy? I was thinking of buying one. Cheers

I found uranium in my local city park. Rocks sometimes have it. Technically, nearly every bit of soil has some, but I suspect you mean concentrated ore.

Hey Tom, just wondering where you got the Mini HV connector mod you had put on your CDV-700? I recently was fortunate enough to score a CDV-777 Radiation Detection Set including a Victoreen Model 6A CDV-700, and an Anton Model 6 CDV-700. I was considering doing the same...maybe. P.S. I was the Civil Defense-nut I talked to you about all your CD logos on your instruments.

@Anti-proton

10 жыл бұрын

I got my mod from GeoElectronics, but it is a common mod for CDV 700's. There are a dozen websites explaining how... but I suck with a soldering iron, so I paid to have it done. Try the Geiger Counter Enthusiast group (I am a member too) groups.yahoo.com/neo/groups/GeigerCounterEnthusiasts/info for lots of folks who can help and tutorials.

Do you have to have an LLC or be affiliated with a company to actually get Ludlum products?

Have you used the Ludlum on your tritium keying if so how much does it read I know it is a beat emitter but I was thinking about the breaking radiation

I have never used either unit. I cannot find anything on the VLP-112. What is the maker?

Is it possible to get scintillation probe wich is sensitive and can detect radiation in EUV spectrum (10 - 100 eV energy levels) and X-rays (100 eV to 5 KeV energy levels)? How is with sensitivity of scintillation probes in that spectrum? Do maybe exists any other instruments to detect EUV and X-rays?

Wow! Another sort of Geiger counter I have never seen before. =) The Ludlum is a boss... I could literally drop it on my crappy CRM100 and the CRM100 would be destroyed lol (I thought about it for the video :)

I want to buy a crm 100, I know it is not best Geiger counter, but,this Geiger counter is good for finding radioactive rocks?Gamma scout is good for this thing?

My CRM-100 geiger muller tube broke. something must of poked it and popped the mica window...do you know where i can get it fixed??

Hey, could you please do a video on how to calibrate a cdv700. And if you don't know how, could you please tell us someone who does.

Hey tom, this question has nothing to do with the video really... But if I have a specimen/check source, how much cpm is too much and worrysome, could you ballpark a number?

Medcom com is a good place. They can replace the LND712 tube which popped.

I'm a computer scientist and programmer. I write, test, debug software, and solve computer problems for large data systems. The pay is good, but the secret to money is not having kids lol =) Realistically, I can typically save up about $400 to$600 a month towards this stuff. I burn all of my free cash on this stuff lol Right now, I am saving towards a new house =\

how does one buy a model 12.. i have been looking on ebay and I only have seen model 3's. also, how much does one of these cost?

@Anti-proton

10 жыл бұрын

I normally buy new from the manufacturer for most things so ebay and I are not well acquainted when it comes to detection gear. ludlums.com is where you get them. You buy the unit (model 12) and the detector (I have a 44-2 but they sell several) separately. The 12 and a 44-2 would run you about $1500 +/- Only get a 3 if you plan to use a scintillator. The 3 is fine for Geiger tubes, and way cheaper.

Whats you're favorite Element?

Where would you go to find uranium in nature? Obviously you can go to a mine but... You know ^_^

I am not happy with this video and might redo it. =)

Probably Bismuth, I like how it has no stable isotope, but because 209 has such a long half life its considered stable. Also its crystals are amazing and its in the decay chain of uranium. I live in the most boring geological area of the UK, Cambridgeshire, and there is absolutely no natural uranium ore sites or anything, on the plus side there is virtually no radon.

Uranium. :) I own NaturalUranium com Uranium is an amazing element. Your favorite element is?

where do you get all this money from?!!? what do you do for a living ???

The maker is Victoreen

I believe this is the same detector used by FEMA.

@Anti-proton

9 жыл бұрын

CBRNe8310 Likely, yes. Many organizations use Ludlums.

Or a company who calibrates them.