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.
On Wednesday, December 12, 2018 at 10:37:22 PM UTC-5, gregebert wrote:
>
> So
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
Some of the parts have date-codes; looks like 1984 to 1986. Maybe
post-Chernobyl equipment ??
Nice workmanship
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Forgot to mention. The big black plastic box on the first board contains
the quartz crystal tube.
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I'll post more detailed pictures tonight.
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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
On Wednesday, December
