Help identifying a PDP-11

Paul Anderson useddec at
Sat Sep 22 21:54:46 CDT 2007

The RDC has "property od DEC- not for sale" on the etch, for whatever that
is worth. I think the 11/70's in the corp cab had blue switches, and the
ones in the H960 had the standard colors. I should have all three left.


On 9/17/07, Tim Shoppa <tshoppa at> wrote:
> > Can anyone help me identify my latest PDP-11 rescue. Not been able to
> > get a good look at it yet as it is in a room packed (and I mean packed)
> > with junk. Machine consists of a DEC Datasystems cab (about 35-40U with
> > a blue bottom panel, pretty similar to light blue cabs here:
> >
> > I'm not familiar with the DEC Datasystems versions of PDP-11s. Does
> > anyone have any background information on them?
> > Also, I'm pretty sure I've not lucked out and found an 11/70 as no
> > toggle switch console, any ideas on what other models were fitted to
> > these cabs. I'm guessing 11/34.
> That is an 11/70, but with the "remote diagnostics console". You will
> find a M8255 KY11-RE in there to connect up a modem to give remote console
> access. Probably hooked up to a modem that was owned by DEC maintenance
> org and leased as part of the maintenance agreement. I'm sure that
> sometimes they asked for the modem and console back if the maintenance
> contract was terminated but as a practical matter I find that they hardly
> ever reclaimed the equipment.
> Tim.

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