Thank you Martin! What does it mean in practice? Are those just an old names of the same tubes, nowadays named DR22xx? Sorry for banal question. I understand the words, but not the whole phrase.
Mark, those are beautifull, I won't be able to sleep now ;) Bartek. środa, 27 października 2021 o 20:02:53 UTC+2 Pramanicin napisał(a): > 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 <urro...@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+...@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/7bfbfc0a-e786-463c-a3c7-27bea56b3ef9n%40googlegroups.com.
