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got around to pulling the ENI I got off epay out of the box and checking it out.? A problem child - but it is an ENI.? Could use suggestions from the smart people in the room -? the ENI turns on

Geo Thanks for the info, it is good to know. I'll write separately to the other email address about other things. Steve

The '63 is an interesting unit electronically speaking. The low range unit uses a 700V G-M tube, but on some ranges is operated below its Geiger region at 550 or 570V. Naturally it doesn't count at

Excellent! Thanks,

That's what I thought. When you or your son gets a chance, verify the tube # inside there. That is a great unit to adapt directly to the CDV-700, but is needs a HV adaptor, because the Geiger-Muller

Steve is it possible to cut and paste the picture of the low-range probe? Geo To: "CDV700CLUB" <[email protected]> Sent: Wednesday, April 20, 2022 5:23:57 AM Subject: Re: [CDV700CLUB] Need Help

George, Thanks very much. I have looked everywhere for this manual.. The probe is the Low Range Unit, DT-507/PDR-63 as described on page 5-11 and shown in figure 5-5 page 5-19. It goes thru a box with

Start with this manual Steve, and identify the model # of the probe. Geo To: "CDV700CLUB" <[email protected]> Sent: Wednesday, April 20, 2022 3:26:57 AM Subject: [CDV700CLUB] Need Help Modifying

Hello, I have a probe from a non-working?AN/PDR-63 and want to modify it to fit on a CDV-700. I do not have the book so I cannot share the schematics. I'd appreciate guidance from anyone who has done

Is there a negative Voltage version? Geo To: "CDV700CLUB" <[email protected]> Sent: Tuesday, April 19, 2022 6:22:29 PM Subject: Re: [CDV700CLUB] Question and an interesting site for those that

Cool Peter. Geo To: "CDV700CLUB" <[email protected]> Sent: Tuesday, April 19, 2022 6:22:29 PM Subject: Re: [CDV700CLUB] Question and an interesting site for those that modify CDV700s and more.

Digression: Microchip LR8 ~$1 3 pin regulator, good up to 450 V input, max 438V output ( only if it could be easily stacked!) P

About 16 hours into a 24 hour Gamma Spectrometry test on an unkown CDV-700 Check Spot. Looking like Uranium based, not radium based, and the lack of U-235 markers suggests a oretty good grade of

To: "CDV700CLUB" <[email protected]> Sent: Wednesday, April 13, 2022 11:36:47 PM Subject: [CDV700CLUB] test for 220413 test if I can post today? P

Good evening. Well I added a npn pass transistor to the shunt regulator. It works like a dream. Didn't have a hv transistor so I used 60V rated tr 2SD1406.? It has a HFE~ 300 I think I have the

Thanks, Clay. rogerw -- This email has been checked for viruses by AVG. https://www.avg.com

Roger (and all), Here is the link to the Victoreen tube catalog from the logwell.com site that has Corotron info: https://www.logwell.com/tech/app_notes/VictoreenCatalog.pdf Clay

Hi Geo, I hadn’t run across that Victoreen unit, pretty fancy. Does a lot more logging, etc. Off-topic X-ray ramblings alert. The dosimeter at work was a RaySafe the size of an Ipod mini or a really

oops, just realized a brain-fart below. The ENi secondary peak must be about 900+V..... 930+/-20V in the manual. And it is Zener regulated to 15.5V in the primary. 930/15.5 = 60 Hmmmm.... I don't