CD V-700 Specials and High Range
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Here are some very unique CD V-700s I have in my collection. A very big thanks goes out to M. Mathis for the insturments shown on this page. Mr. Mathis was very kind to donate these to my museum collection. If I remember correctly Mr. Mathis found these instruments in with a large lot of instruments he purchased at a FEMA auction around 1998 or 1999.
Click All Photos To See Larger!
FCDA ITEM CD V-700 MODEL 5
SERIAL NO. 53
ANTON ELECTRONIC LABORATORIES INC.
U.S. HOFFMAN MACHINERY CORP.
NEW YORK, NEW YORK
Here are some close-ups of the various identification labels on the case. The case side label plate does have a check source underneath although it doesn't say that on the plate. The plate is simply glued in place even though it has rivet holes at the corners and there is also no serial number on it. Also note that the side plate says ANTON 700 but then at the bottom of the plate it says FCDA ITEM CDV-700. Is the 2-26-59 date the build date or the date it was submitted for approval? I don't know. There are two taped-on labels which are identical. One on the case top and one on the case bottom. I have no idea if the "43" on the side of the case has any significance.
Here's a photo of the inside of the instrument. It's a Universal Atomics battery frame and electronics. This raises a whole other set of questions. Did Anton buy the design from Universal Atomics and then change it to a their own Model 5. Are there any more Anton Model 5s out there with Universal Atomics Model 4 electronics. Again. Who Knows?
Anton CD V-700 Model 6(?) Or Larger Case Model 5 Prototype
The identifaction label on this instrument reads as follows...
OCDM ITEM CD V-700 MODEL 5
SERIAL NO. (BLANK)
ANTON ELECTRONIC LABS INC.
BROOKLYN, NEW YORK
I have no idea what is going on with this one. It says on the case it's an Anton CD V-700 Model 5 but it's in the slightly larger Anton Model 6 case. The Anton CD V-700 Model 6 case is the same standard case size as all the other later model CD instruments. It's tagged and labeled with the taped on labels that say it's a prototype. The Anton CD V-700 Model 5's that I have seen are all slightly smaller cases which are similar in size to the CD V-700 Models 1 through 4. I think that this is either a prototype for the Anton Model 6 or a larger case Anton Model 5. If it is a prototype for the Anton Model 6 I can't figure out why it's not marked as a "Model 6" instead of "Model 5" on the case. I don't know. The case size is what's throwing me on it. The most interesting thing about this instrument to me is that there is no serial number on it and there is no evidence of one ever being on it. Inside it appears to be identical to the smaller case Anton CD V-700 Model 5.
In other words I have no idea what the heck this thing is. Here are some photos. What do you think? I could ramble on with nonsensical speculation all day long so I'll stop.
Here are the various identifications on the case. There is no serial number on the main identification label. There are two taped on prototype date labels. There is one taped-on label on the case top and one on the case bottom. The dates are almost exactly a year later to the day from the taped-on labels on the Anton Model 5 prototype at the top of the page. This instrument has two tags tied to the case strap loop. One reads "PRODUCTION PROTOTYPE TO BE KEPT" and the other tag reads "ANTON ELECTRONIC LAB, FN-2W -24907(2)A-2-23-60, FEB 23 1960."
Higher-Range CD V-700 Modification Kit
This one is not a prototype but a higher range CD V-700 using a special G-M tube. The following text is information provided by a Yahoo group CDV700Club member who had some info about this unit...
"What you have is a CD V-700 that was intended for use with one of the B-2 aerial monitoring kits. The kits originally came with an OCD ITEM NO. OCD-D-101, TYPE A Geiger-Mueller Tube and a "stick-on" range change. The modification G-M tube and applique was manufactured by EON Corporation. That G-M tube was designed to be compatable with the CD V-700. Changing the GM tube effectively decreased the sensitivity of the CD V-700 by a factor of 10 due to the decreased volume of the G-M detector. Thus the ranges became 0-5, 0-50 and 0-500 mR/hr."
What it amounts to is that all that had to be done is intall the higher range tube and stick on the applique to "change" the range of the meter. This is a Victoreen CD V-700 Model 6B. The modification did not change the model number of the meter.
EON G-M Tube Kit
Here is the EON G-M tube kit. The kit is just instructions, tube and a sticker. This kit could have been installed on any Model 6 or higher CD V-700. Here is PAGE 1 PAGE 2 PAGE 3 and PAGE 4 of the EON manual seen in the above photo. Special Thanks to Paul Frame for this kit!