Surviving PDP-11 stats (was: Qbus split I&D?)

Paul Birkel pbirkel at
Wed Mar 18 01:23:39 CDT 2015

On Tue, Mar 17, 2015 at 4:22 PM, Pontus Pihlgren <pontus at>

> On Tue, Mar 17, 2015 at 04:08:26PM -0400, Ethan Dicks wrote:
> >
> >...  How many 11/70s are in the hands of folks like us?
> Quite a few I would think. We have no less then three at the club. And
> of the top of my head there are at least three more owners on this list.
> Given how many of the more rare machines people have, I'd venture that
> there are at least 25, if not more, 11/70 machines in private hands.
> /P

So, I've never thought of the 11/70 as being "that rare", but "at least 25"
still sounds to me as being fairly uncommon as PDP-11's go?

How (relatively) common are the remaining early 11's these days?  With some
lumping, and ignoring the F11/J11-based ones, in these categories: 20/15;
10/05; 40/35; 45; 50; 55; 60; 70; 34/04; 44?  The last two I'm thinking are
still quite common; really no idea about the others ... although the number
of remaining 11/60's seems to be in the bare-handful category.  50's and
55's might be similarly low?


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