pdp11/70 front panel frame

Tom Uban uban at ubanproductions.com
Fri Apr 24 08:24:27 CDT 2009

Steve Maddison wrote:
> 2009/4/23 Johnny Billquist <bqt at softjar.se>:
>> It's been very long since I played with an 11/40, but the
>> 11/40 and 11/45 have way fewer switches than the 11/70, and the frame lines
>> up with the switches on the 11/70.
>> Can't remember for sure the exact details of the 11/40 I played with, but it
>> must have had some kind of filler on the panel, to get to the edges.
> Yes, the '40 has a few more "fake" switches (the white caps) between
> the coloured ones. I've not counted, but I suspect the total number of
> switches (fake or otherwise) is the same.
> But anyway: isn't there something simple like a part number that can
> be checked to see it the frames really are the same?

While I am not sure about the RDM vs standard 11/70 front panels, the
cast frame is identical between 40, 45, and 70. I have examples of all
three and have verified this.


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