Tom, The mine you're referring to is a few miles SW of Mars Hill, right? I've talked with Ruth a couple of times about trying to find this locality and getting...
Tom, The mine you're referring to is a few miles SW of Mars Hill, right? I've talked with Ruth a couple of times about trying to find this locality and getting...
... Yes, I had read that, there, and it was in the back of my mind when I decided that the stack of surplus was worth measuring. Interesting that the toilet...
... houses close by). I never got up the nerve to ask to collect there. "Hi ma'am, mind if I remove some of the radioactive minerals nearby?" [1] Unless she's...
No pocket protector? Next you'll want me to leave my slide rule at home?? Geo ... From: DH To: CDV700CLUB@yahoogroups.com Sent: Tuesday, January 01, 2008 12:28...
In a message dated 1/1/2008 12:34:39 P.M. Central Standard Time, GEOelectronics@... writes: No pocket protector? Next you'll want me to leave my slide...
Count me in. That would be a great way to get our CDV-700's talking the same language. Steve. S. ... different members to use, then they can send it along to...
Hello, I have slaved over the first Victoreen CDV-700 in my attempts to get it to work properly. I think I am on the right track now. The reason for all...
Hello Members, I have recently acquired access to an X-Ray Fluorescence analyzer. I have the capability to report ppm concentrations for the following ...
After going through everything, I have finally isolating the problem to the warped meter. Which, if I can find one, could be replaced. Hi Steve, I have a large...
... Howdy Tom, What is your concern with B+ being on the coupling transformer at all times? Was this transformer under- engineered, and if so, how do we know...
... Hey Steve, The schematic for both is virtually identical. The main difference is as Tom points out, the GM tube is inductively coupled to the pulse...
Howdy Tom, What is your concern with B+ being on the coupling transformer at all times? Was this transformer under- engineered, and if so, how do we know this?...
... Hey Tom, ... How is this a blunder? It's not an engineering blunder, certainly, in terms of circuit design. (Using the same argument one could say that...
... All that said for Victoreen blunder regarding the 6B transformer blunder... If it goes out, can the board be "downgraded" to the 6A model? I read that...
Hey Tom, ... How is this a blunder? It's not an engineering blunder, certainly, in terms of circuit design. (Using the same argument one could say that any HV...
All that said for Victoreen blunder regarding the 6B transformer blunder... If it goes out, can the board be "downgraded" to the 6A model? I read that such...
... pop and swap boards. ... Tom, The cases that hold the boards on the 6B and 6A are identical. In fact the only two parts that are attached to the case are...
... Tom, I believe we're speaking past each other. I only ever took exception to your statement that "a constant B+ on the coupling transformer was a...
Have you tried baking out the leaky transformer at about 160F for an hour or so and then adding a few drops of one of the low viscosity anaerobic sealants? The...
Hi Craig, Excellent idea! Baking should work if water has slowly worked its way in via humidity... And the Loctite idea is a real winner as well. In the past,...
http://www.archive.org/details/laboratorymethod00biltrich<http://www.archive.org/details/laboratorymethod00biltrich> Hi All, Try the link above! It's for...
Hi Steve, Thought I'd give a clue to your low alpha counts on your thorium crystals. You noted yourself that the crystals are very dense. As such, you can...
Humm, Now that is something I did not consider. I could take a tiny one, which has less surface area than a larger one and test it for alpha. Most of these...
CDV700 Victoreens have a DU check source on the side. These appear to be made from measured strips of DU metal. Between the two Victoreen housings that I...
Aye, got it. But with the Victoreens that have DU strips,DU is DU refined under exact U.S. Gov specs, and if the same weight and size the readings from each DU...
Aye, BUT... If you look at the Victoreen 6A/B operating manual PDF that I found online it specifically states that the units can be calibrated with the check...
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