Thanks for posting Nick. On Wednesday, December 21, 2016 at 7:13:50 AM UTC-8, Pramanicin wrote: > > Looks like two photos weren't attached for some reason...the glow is the > same, but no blue hint as mentioned, so probably sans Hg. The pin > arrangement is totally different and there appear to be two '9' cathode > pins...I have six of these tubes and they all appear to function like new. > The orange stuff on the pins is only on one tube and doesn't appear to be > rust but maybe an enamel of some form? I haven't looked at them too hard > yet. I could make a clock out of them, but the pin pattern difference means > it's not plug and play...:-( > > [image: image1.JPG] > [image: image2.JPG] > Sent from my iPhone > > On Dec 21, 2016, at 03:24, Jon <[email protected] <javascript:>> wrote: > > > Nice find indeed - thanks for posting the pictures Nick! > > I don't think we should assume these are a development version unless > there's some direct evidence of that status (like a stamp of ОПЫТНАЯ - > experimental). Absent that, it's more likely that these are production > versions, just using an earlier internal construction than the one we are > more used to seeing. It's quite common for tubes to evolve internal > construction over time without designating that in any change of the > marking - those are usually tied to a particular electrical specification > rather than fine physical detail. > > It'd be interesting to see the glow colour - it wouldn't surprise me if > they are neon only, lacking the blue haze that comes from mercury addition. > Digit stacking order might be different too. > > Don't like the apparent corrosion on the pins though - would worry whether > this might lead to micro-cracks in the glass and potentially compromise the > gas seal. Personally I'd be tempted to keep them as historical specimens > rather than working clock tubes unless you've got a hatful of them. > > Jon. > > > > -- > 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] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/54b455c4-a188-45d5-9011-151a997c8afd%40googlegroups.com > > <https://groups.google.com/d/msgid/neonixie-l/54b455c4-a188-45d5-9011-151a997c8afd%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > >
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