[Milsurplus] Tube Nomenclature Questions

[J. Forster]

Thanks very much.

I never knew the letters and number after the filament voltage meant
anything rational.

Best,

-John

===============


>
> John:
>
> J  Joint
> A  Army
> N  Navy
>
> C
> R
> C  RCA
>
> 6  6 volts
> S  Shielded design octal
> K  Serial letter Random assigned
> 7  Number of active elements
> Y  Micanol base
> Absence of G, GT indicates metal envelope
>  W  here means ruggedized
>  A, B, etc. here are design improvements, usually backward but not always
> forward compatible.
>
> Robert has the complete manufacturer list.  And it is in many TMs, as well
> as somewhere on the Internet, but I haven't looked at it lately, so I
> don't have a URL.
>
> The other information is in the old RCA, GE, etc. tube manuals
>
> HTH
> W5VPQ
>
> ---------- Original Message ----------
> From: "J. Forster" <jfor at quik.com>
> To: ARC5 at mailman.qth.net, milsurplus at mailman.qth.net
> Subject: [Milsurplus] Tube Nomenclature Questions
> Date: Mon, 30 May 2011 19:20:27 -0700 (PDT)
>
> Hi,
>
> I'm somewhat ignorant about tube nomenclature. Consider:
>
> JAN CRC 6SK7Y
>
> Is the CRC the Navy Manufacturer's code? Does anybody have a table of the
> common ones?
>
> Also, is there some reference for the suffix letters ( I know what GT and
> G mean, but what about the other possible letters)
>
>
> Thanks,
>
> -John
>
> =================
>
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