Er, you're not the only one with a stash of these.... :) They are nice looking tubes...
On Wed, Oct 27, 2021 at 10:50 AM Mark Moulding <urros...@att.net> wrote: > I have a pretty good sized collection of RCA DTF-104B Numitrons, which I > think are especially attractive - they're large digits, in a flat-topped > end-view tube. They're quite rare now, and in fact I think I have most of > the remaining world stock of these things (around 150 or so). Although > I've successfully used them in a couple of projects, I've never been able > to locate a data sheet for them - does anyone have any pointers for this > specific tube? > > Thanks! > ~~ > Mark Moulding > > [image: WoodClock (Small).JPG] > > On Tuesday, October 26, 2021 at 2:21:21 PM UTC-7 Dekatron42 wrote: > >> I knew I'd seen the number, and found them just now: >> http://www.tube-tester.com/sites/nixie/dat_arch/Numitron_RCA_01.pdf at >> the bottom of the page, they are development numbers for the DR2200 series. >> >> /Martin >> >> On Tuesday, 26 October 2021 at 22:21:47 UTC+2 Dekatron42 wrote: >> >>> Tubes designated DTF are development numbers used by Apollo/RCA - it >>> says so at the bottom of their datasheets. >>> >>> /Martin >>> >>> On Tuesday, 26 October 2021 at 21:43:52 UTC+2 Bartek Ogryz wrote: >>> >>>> Hi! >>>> They appeared on eBay last days: DTF137, DTF138, DTF140 (or maybe >>>> DTF/37, DTF/38, DTF/40). What are theese? Anyone has some more knowledge >>>> about them? >>>> >>>> Bartek. >>>> >>>> BTW: If someone is interested in numitrons, quite rare Apollo DA-2500 >>>> are hiding on eBay: item no 254866404573. Unfortunatelly, as the seller >>>> told me, all that have left, are without markings... >>>> >>> -- > 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 neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/1baae699-e553-4f02-95f7-9b6b07cbee90n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/1baae699-e553-4f02-95f7-9b6b07cbee90n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRH%2B1M65TRyxwzz%2Bm%3DHR9NNJapZtjveMMkBdRbcH1d8aAHA%40mail.gmail.com.
