05-11-2017, 02:21 PM
Looks like your lamp is a NE-51, use to be a common one back years ago. Don't have a 223 but it's typical for the tester to have a 2 sided cap (grid) one side will fit the older larger caps like a 24A or 75 tube and the other would fit the cap one the newer self centering tubes like a 6A8 or 6K7. After taking a quick look at the manual it doesn't appear to have a 5pin or 6pin socket. Must have an adapter to fit these tubes. Conar was out of Wash Dc making kits in the late '60s/70s. By this time 5 an 6 pin tubes are considered obsolete.
Manual is here http://bama.edebris.com/manuals/conar/223
Manual is here http://bama.edebris.com/manuals/conar/223
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
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