Hi Charlie,

That is a Dekatron Frequency Counter. Here is a link to a better picture of one and some info: https://antiqueradios.com/forums/viewtopic.php?f=8&t=270758

73, Gordon KJ6IKT

On September 14, 2022 at 10:55 AM CL in NC via Milsurplus <[email protected]> wrote:


I do not know if this picture will post or not.  On the show, The Big Bang Theory, in the backgrounds of the apartments of the primary scientist characters are all kinds of electronic gadgets.  I saw one I had never noticed before.  It is a 4 or 6 inch rack panel, has two silver handles, on on each side, it appears to have 4 eye tubes across the front, and several knobs along the bottom and sides.   I attached the pic, but as I said, don't know if it will work I tried to crop it and focus it as best I could. There was a mod monitor in QST or the Handbook years ago that used 2 eye tubes for an indication of mod percent from 85% to overmod, and that is the first thing I thought of, perhaps a commercial version.

Charlie, W4MEC in NC______________________________________________________________
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