Matthew, Thanks my friend for the reply and pictures. Your second post included the picture..... All I can say is MY GOD "face palm" That is no joke... Makes complete sense on why its so sensitive, Its the size of a spent uranium fuel rod LOL.
What is you background reading on the 3 side by side and what is your reading to a sample ? I am curious on the SBM21 vs. the 20. Haven't decided what to buy. Ahh yes good old sovtbe.com Used them before, Good product and at least we can trust him to send you NOS items. The DP5V is a nice unit, But a bit much. My project uses a arduino and a uP and then a GM tube and simple 555 power supply. Keep us posted on your project, Very curious on how it goes! And let me know what readings you get on the 20 vs. 21 tube please. Thanks again Matthew, And sorry for hijacking the OP thread! On Friday, November 15, 2013 2:37:14 PM UTC-7, Matthew Smith wrote: > > Quoth Chris Stalin at 16/11/13 07:10... > ... > > Do you mind sharing who you bought the geiger counter from? > > I was just about the go ahead and grab one for a geiger counter project. > > SBM20 or maybe STS6. > > This is the vendor, but she doesn't have any at present: > http://www.ebay.com/sch/lenalosku/m.html > > However, this guy has them (DP-5V) listed, also sells Nixies, GM tubes, > Xray tubes, capacitors, and more. Found him (Denis) most helpful: > http://www.sovtube.com/en/ If there are things listed in bulk lots but > not singly, just ask. > > SBM20s are the low-range tube used in the DP5-V, pretty good work-horses > they are. If you want a bit more sensitivity and don't mind extra > physical size, The SI22G is VERY sensitive. Not sure how this list > handles attachments (if at all) but I've just taken a photo of an SBM-21 > (in plastic bag,) SBM20 (middle,) SI22G (huge!) for comparison. > > Have plans to make a Nixie display benchtop counter, using as close as > possible to the DP5-V tube-regulated power supply as I can. (Will still > cheat and use a microcontroller, though!) > > Cheers > > M > > -- > Matthew Smith > > Business: http://www.smiffytech.com > Blog: http://www.smiffysplace.com > Linkedin: http://www.linkedin.com/in/smiffy > Flickr: http://www.flickr.com/photos/msmiffy > Twitter: http://twitter.com/smiffy > > ABN 16 391 203 815 > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/527189f5-06fb-47fc-8540-49c7a91a48e6%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
