Talk:Pre Amp or Time-Base

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From the photos, I would guess this was a prototype for an early 7000-series plug-in. Any more information about this from the source?

--Peter (talk) 04:45, 17 October 2018 (PDT)

One of the boards has a copyright date of 1967. That's really early for 7k.

--Kurt (talk) 12:03, 17 October 2018 (PDT)
Yep, but look what I found: Media:Tek 323-Vert-AttnBD.jpg - looks like a re-use job to me ...
--Peter (talk) 23:36, 18 October 2018 (PDT)