Share your favorites on Show & Tell


In Electronics > Vacuum Tubes > Show & Tell.
Recent activity3296 of 225695Ken griffey juniors signatureEAPG??? Cherub Perfume Bottle
Love it
Like it

jscott0363jscott0363 loves this.
fortapachefortapache loves this.
WatchsearcherWatchsearcher loves this.
TreyTrey loves this.
dav2no1dav2no1 loves this.
Vynil33rpmVynil33rpm loves this.
BrunswickBrunswick loves this.
vetraio50vetraio50 loves this.
PhilDMorrisPhilDMorris loves this.
See 7 more
Add to collection

    Please create an account, or Log in here

    If you don't have an account, create one here.

    Create a Show & TellReport as inappropriate

    Posted 1 month ago

    (1226 items)

    I've shown some of my electron tubes before

    but guess who came across another chassis-ful this afternoon?? <LOL>

    This thing is essentially the "tone generator" from a 1950's-ish electronic "organ-like device". ;-) The whole assembly served one and only one purpose -- to create exactly *12* individual audio 'root frequencies' correlating to the 12 notes of a musical scale, which then would get divided or multiplied by two (electronically speaking) maybe more than once, in order to fill in each note of every octave of the range of keys on its keyboards. (there's a few more steps in there too, but that's the 1c version of 'how old electronic organs worked'...)

    Nowadays the full functioning of this (multiplied a few thousand times as much or more) would only occupy the *tinest* little bit of a microchip - even as soon as the 1960's-70's the technology had advanced enough (and shrunk the hardware accordingly) to have passed entirely thru "solid-state" and "transistorized" onto "integrated circuits" that could reduce all this to one relatively simple circuit board.

    One other little tidbit -- the vast majority of all the tubes on this chassis are the exact same tube number 6SN7 GTA and most are (probably original and) by the same tube manufacturer, but there are a few replacements by other brands. These would no doubt be those "dividers" mentioned above.

    This unit will never see electricity again, it having been removed/cut from all the rest of its surrounding O.L.D. by one of my customers who intends to reuse the outward parts of its former cabinet for other purposes. I just happened to be right place/right time for a different matter, noticing it and asking "what's that?", then getting the "you want it? in return... <LOL> Frankly I'll probably pull all the tubes to much more compact storage in a box and trash the rest...even the tubes aren't likely worth the effort it took me to carry 'em home, but there's *so many* of 'em -- how could I **resist** ??? [bad electrissical pun, sorry...]

    Vacuum Tubes
    See all
    6AK5 6AL5 Style Vintage Vacuum Tube Amber LED Night Light Guitar TV Ham Radio
    6AK5 6AL5 Style Vintage Vacuum Tube...
    JJ ECC83s / 12AX7 Preamp Vacuum Tube
    JJ ECC83s / 12AX7 Preamp Vacuum Tub...
    Plate Bias Current Probe Tester 8Pin Socket for 6L6 6V6 EL34 KT88 6550 Tube Amp
    Plate Bias Current Probe Tester 8Pi...
    PSVANE 2A3B VACUUM TUBE Replace 2A3 Hifi Tube Audio AMP DIY Bakelite Base 1Pair
    PSVANE 2A3B VACUUM TUBE Replace 2A3...
    6AK5 6AL5 Style Vintage Vacuum Tube Amber LED Night Light Guitar TV Ham Radio
    6AK5 6AL5 Style Vintage Vacuum Tube...
    See all


    1. PhilDMorris PhilDMorris, 1 month ago
      Someone cleaned it up nice. I love this, there used to be a big tube place not far from where I lived in the late 70's and loved going there.
    2. dav2no1 dav2no1, 1 month ago
      If you remember the picture of my father's workshop, there were thousands of tubes..when he passed my sister and I had inventoried 60,000 tubes before giving up. Those were just the new in box stuff. There was 3 times as many used ones that needed to be tested. I tried..but what a tedious task! Some required 2 to 3 tests for 1 tube. If any of those failed, the tube was junk and you wasted several minutes. It seemed like for years everytime I moved something there was another box of tubes.
    3. dav2no1 dav2no1, 1 month ago
      Forgot to add the link for others interested..
    4. Watchsearcher Watchsearcher, 1 month ago
      The tubes go well with your peripheral nerve stimulator machine.....a positively ghoulish pairing. :-)

    Want to post a comment?

    Create an account or login in order to post a comment.