[Drake] Date Codes on 3-500's

Tue, 1 Apr 2003 15:03:50 -0800

The  2765 is 27th week of 1965 (OLD!)
the other one is 41st week of 1980. (4180) (Not Quite as old)!

73 and good luck!
Jim W7RY

----- Original Message -----
From: "b j" <[email protected]>
To: <[email protected]>
Sent: Tuesday, April 01, 2003 2:47 PM
Subject: [Drake] Date Codes on 3-500's

>
> I recently acquired an L-4B that has spent at least the last 15 years
> residing in a chicken coop.  A nastier specimen I have never seen.  It
> cleaned up real well, and after getting the power supply to work (I new it
> must have problems since it "rattled" when moving it) I find one of the
> tubes doesn't light up.  (Not surprised.)
>
> Does anyone know how to interpret the "date codes" scratched into the
tube?
> One of mine says 4180 (it lights up) and the other one says 2765. It has a
> red phenolic disc between the bottom of the tube and the pins, the other
> doesn't.
>
> There are two other tubes available with 'codes' of R8 8528 and R8 8915.
> Both of these have the red phenolic discs.
>
> Any input would be appreciated.
>
> Bill - W5WR
>
>
>
>
> _________________________________________________________________
> The new MSN 8: advanced junk mail protection and 2 months FREE*
> http://join.msn.com/?page=features/junkmail
>
> _______________________________________________
> Drake mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/drake
>