They are the same thryratron electrically but they have a different top, some come with this evacuation pip at the front and some come with a lens at the front and the evacuation pip at the bottom where the pins exit the glass.
/Martin On Saturday, 17 April 2021 at 17:34:17 UTC+2 w...@kitsunegari.net wrote: > There's something odd with the one in this listing: https://ebay.us/8EtaeL > Check the 5th picture (close up of the tubes from the top). > They don't look like MTH-90 since they seem to have a nipple on the top of > the tube (the side facing the lenses). > Also, the bottom part (where the terminals are) is different from an > MTH-90. > So this one seems to use a different type of thyratron but the question > is, which one? > > On Friday, April 16, 2021 at 8:48:38 PM UTC+2 Terry Bowman wrote: > >> >> On Apr 16, 2021, at 1:36 PM, Keith Moore <nixie...@gmail.com> wrote: >> >> Did you get any more information on these? >> >> >> I'm all ears as well. >> >> This seller just put up three BIN listings. They appear to be identical >> (you may have to scroll down the page): >> >> https://www.ebay.com/str/robotube?_trksid=p2047675.l2563 >> >> >> I wish now that I'd bought some of the ones with yellowed plastic. The >> light probably shines through unlike the white ones that are opaque. >> >> >> Terry Bowman, KA4HJH >> "The Mac Doctor" >> >> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade >> Runner* >> >> -- 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/928fea87-1826-4825-b754-418d2be0c500n%40googlegroups.com.
