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Registered Member #1334
Joined: Tue Feb 19 2008, 04:37PM
Location: Nr. London, UK
Posts: 615
Grenadier wrote ...
If I say the rodan CD47 do I get the tube as a reward?
It is indeed a CD47, and no, I'm not selling or giving away mine!
I own the neonixie-l Google group and administer the Yahoo! one (now archived), which is the main resource for nixies on the global super interwebby thing, and this photo is used as the group's "picture" (aka avatar).
Some of my CD47's had "poisoned" cathodes and needed to be restored - this was one of my "after" photos of a particular tube.
Registered Member #1334
Joined: Tue Feb 19 2008, 04:37PM
Location: Nr. London, UK
Posts: 615
Grenadier wrote ...
"Some of my..."
where did you find them?
Had them for many many years (over 20) - bought the original batch before they became desirable - nobody wanted them. Bought a few sets more between 10 and 15 years ago to make up numbers.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Steve McConner wrote ... OK, can you guess what this one is?
I'll confirm Grenadier's guess: it's a spiral glow lamp from a passive timing light (I have a complete specimen). Here's a Nixie not quite as grand as Nicko's:
Registered Member #1334
Joined: Tue Feb 19 2008, 04:37PM
Location: Nr. London, UK
Posts: 615
Klugesmith wrote ...
guess: it's a spiral glow lamp from a passive timing light (I have a complete specimen). Here's a Nixie not quite as grand as Nicko's:
and here's another curio for y'all to identify:
Well the first is an RFT Z568M, NIB - still worth about 200+ bucks each - maybe more - they are fetching silly prices at the moment.
The second is easy - its an E1T - not a just a beam counting tube - it also contains a CRT.
See Ronald Dekker's fascinating website for more on these - He is ex-Philips and has written extensively on their tube history, and especially the E1T - see
I too have some of these, but have never fired up an E1T in anger though I have a 6 digit Z568-based clock (or rather my wife does as it was a present to her about 10 years ago)!
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Yes, that little twirly thing was a neon tube from a timing light. Here is a nixie tube with symbols, presumably from a digital multimeter. And some GEC KT88s doing the business.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Here's an original 866 rectifier -- no stupid cylinder to hide the filament. The rating is about 1/2 amp and a few kV, but here it's carrying about 200 mA from a low voltage DC supply. (Vf ~ 11V).
Here's a practical application: proving the feasibility of a semiconductor-free microwave oven. (May,2006). The coffee-heating rate was indistinguishable from the rate with original silicon diode.
p.s. do they still make MWO's with a waveguide feed to the top of cooker box, like this old specimen?
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Post Pics of Odd/Old Parts and/or Fancy Glowing Tubes.
