Old Russian Beta Radiometer

[Tyler Bourne]

Hello everyone.  A while back I bought a "Beta Radiometer" on ebay.  It has a lovely Nixie display including a bar graph tube.

I recently got fuses for it and was able to power it up.  It looks like it still works perfectly.

It is missing the actual detector and has several sockets on the bottom.  Since this is some old Soviet Military equipment I have been unable to find any information about it.

Just thought I would post some pictures here for your viewing pleasure.

If anyone is able to find any information at all on this device please let me know.  It would be great if I could figure out how to connect up a detector tube to this thing.

If anyone wants more pictures or a video let me know.

[GastonP]

There are lots of geiger tubes for sale on eBay. If you could post a high res picture of the inside of the equipment probably some of us could help.

I am a big fan of geiger tubes (hey, they have gas inside !!!) and habe bought more than a couple from the ex-USSR.

Gastón

[Tyler Bourne]

I'll post more detailed pictures tonight.

[alb.001 alb.001]

Electronics Goldmine in Denver Co  also has a vast assortment of Russian GM tubes and full and semi kits for implimenting them.

good luck  pharma Phil

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[Tyler Bourne]

I have some more extensive pictures attached.

The unit is designed to be wall mounted with the detector housed in a wand that must connect to one of the sockets on the bottom.

The 4 pin socket on the right is the power socket.  I think the detector most likely connected to the socket that is missing it's cap.

Not sure if the pictures will be of any help but this thing is beautifully made and the components are interesting.  The bargraph tube is housed in the brown rectangle mounted to the front of the case so it's hard to see.

[Tyler Bourne]

Forgot to mention.  The big black plastic box on the first board contains the quartz crystal tube.

[gregebert]

Some of the parts have date-codes; looks like 1984 to 1986. Maybe post-Chernobyl equipment ??

Nice workmanship

[Tyler Bourne]

I found a detector on ebay.  Will test it out when it gets here.

I'm not sure how they are driving the tubes since I don't see the usual driver chips.  I'll examine the board and see if I can figure out how they're doing it.

Also I have a video of the display.  Not a very good video but I'll take another when I have the detector.

https://youtu.be/BSRXjYZmnD8

[Tyler Bourne]

Seems like it was most likely made in late 86 or 87.  I'll see if there are any later date codes.

The power supply is interesting, opens like a book with board on one side and power transistors/heat-sink on the other.