> On Apr 25, 2022, at 2:35 PM, Adrian Godwin <[email protected]> wrote: > > I never saw one used as a tuning indicator though I messed with a lot of > discarded valve radios in my youth. But I do remember the magic eye on my > father's Telefunken tape recorder, used for the recording level. It was a > linear tube with a central rectangular green section that grew and shrank.
I first saw one on an old radio and then later on a tape recorder back in the '70s. Later a circuit tracer IIRC. > On Apr 25, 2022, at 3:29 PM, Nick Andrews <[email protected]> wrote: > > I'm really not at all familiar with them, but am interested to learn more. I > do have an old Heathkit(?) cap tester that uses one of the end-on style > tubes. I need to dig that out and see if it works. This site has animated gifs showing the display patterns: http://www.magiceyetubes.com <http://www.magiceyetubes.com/> Tons of additional info: https://www.sm5cbw.se/tubes/index.htm <https://www.sm5cbw.se/tubes/index.htm> (click on "Magic Eyes") http://www.r-type.org/inx/inx00501.htm <http://www.r-type.org/inx/inx00501.htm> https://radioremembered.org/tuneye.htm <https://radioremembered.org/tuneye.htm> > Have a small stash of IN-9 and IN-13 bought before prices became idiotic that > I might use for a thermometer or spectrum display at some point. Have you seen Mike's thermometer?: https://threeneurons.wordpress.com/nixie-power-supply/nixie-thermometer-kit/ <https://threeneurons.wordpress.com/nixie-power-supply/nixie-thermometer-kit/> I bought the last one that came with two ZM1000s. Wish I had a dozen more IN-13s. I don't have a enough for all of the kits that I have and now... > But no magic eyes yet other than the one... Again, snag one of these for $20: https://www.ebay.com/itm/193443031569 <https://www.ebay.com/itm/193443031569> 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CD305D5D-E46C-4384-A615-433469CF0B16%40gmail.com.
