Hi Steve,
I don't believe that there is any way outside of Eimac to correlate
those lot numbers with a date.
The date codes are printed on the glass along with the tube number in
the "standard" year/week 4 digit code.
From vague memory, your hand engraved unit is probably from the
1960's. The stamped unit is later -- 1970+.
73 & Good afternoon,
Marv WC6W
On Mon, 04 Oct 2004 17:02:28 -0500 AB5MM <ab5mm@9plus.net> writes:
> I have searched both high and low, but can't seem to locate any
> definitive answers as to how to decipher the date codes on a couple
> of
> Eimac 4-1000A's here. Can someone help me out? They are P8-10539 and
>
> CRG-108. The first P8 code is hand written on the metal base inside
> with
> a vibration marker. The CRG is in the same approximate location on
> the
> other tube, but is neatly stamped.
>
> Any help would be greatly appreciated.
>
> Thanks and 73,
>
> Steve
> ab5mm
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