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  • 1944GPW's Avatar
    November 19th, 2019, 04:33 PM
    I received a 50lb PDP-11/05 shipped internationally from the USA that arrived with a layer of bubble wrap and piece of cardboard taped around it. I...
    22 replies | 531 view(s)
  • 1944GPW's Avatar
    October 26th, 2019, 10:45 PM
    I was looking at this LSI-11 bundle on eBay https://www.ebay.com/itm/193172448035 and noticed the switches and lights console board is different to...
    1 replies | 238 view(s)
  • 1944GPW's Avatar
    October 25th, 2019, 11:51 PM
    1944GPW replied to a thread H960 rack in DEC
    Nice rack design. Are there gussets internally, to reduce lateral twisting? For the front piece, consider a piece of say 2.5mm thick wall RHS tube,...
    10 replies | 790 view(s)
  • 1944GPW's Avatar
    October 25th, 2019, 11:46 PM
    1944GPW replied to a thread DEC documents on manx in DEC
    Thank you very much! I really appreciate it!!!!
    26 replies | 1616 view(s)
  • 1944GPW's Avatar
    October 24th, 2019, 08:46 PM
    1944GPW replied to a thread DEC documents on manx in DEC
    That sounds very good indeed. You wouldn't happen to have any docs for the Plessey PM-1100 8KW and 16KW Unibus memory modules would you? Or 360/40?
    26 replies | 1616 view(s)
  • 1944GPW's Avatar
    October 24th, 2019, 03:44 PM
    1944GPW replied to a thread H960 rack in DEC
    I have been working on the masthead for a while and indeed will have something that satisfies the 'six foot rule' (ie. it looks good from 6 feet...
    10 replies | 790 view(s)
  • 1944GPW's Avatar
    October 23rd, 2019, 10:58 PM
    1944GPW replied to a thread H960 rack in DEC
    A while ago I repopped some H960 rack hardware fixtures including imitations of the original stabiliser feet. I guess it doesn't help you too much...
    10 replies | 790 view(s)
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About 1944GPW

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About 1944GPW
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Brisbane, Australia

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Recent Entries

ASR 33 teletype chad box

by 1944GPW on January 13th, 2019 at 11:53 PM
I had a go at doing the ASR 33 chad bucket in CAD so you ought to be able to just print one off now.
https://www.thingiverse.com/thing:3353088
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DEC PDP-11/03 switch paddle, LED receptacle and console board

by 1944GPW on March 16th, 2018 at 11:21 PM
I have an MDB Systems workalike LSI-11 backplane which I am starting to get working. I thought it would be nice to build the DBCOK logic and console switches to have the same look and feel as the original PDP-11/03 console so I scripted up the specific DEC switch paddle and LED receptacle as part of the project (which is ongoing) so they can be 3D printed and use a tiny Arduino to do the powerup sequence.

If you have a PDP-11/03 or a PDP-11/05 with missing or broken switch paddles then

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IBM System/360 and System/370 console button replica inserts

by 1944GPW on December 9th, 2017 at 11:19 PM
In case you need some stopgap inserts in a /360 or /370 console, until you find the originals (which I have found is very difficult).
They pass the 'Six foot Rule' test ie. they look good from 6 feet away.

Attachment 42404 Attachment 42405

See https://www.thingiverse.com/thing:2703172
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PTAP2DXF - make paper tapes without a punch

by 1944GPW on December 1st, 2017 at 06:04 AM
If you have a paper tape reader and no punch, you can now make real working paper tapes using a normal home stencil-cutting machine.
I've written a small command line utility that can take a .PTAP (or any other binary or textfile) and generate output that these
machines will cut. that your reader will read.
Attachment 42216Attachment 42217
It can easily make repair pieces for existing old broken tapes from any byte offset. In addition it can

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PDP-Lifter

by 1944GPW on October 6th, 2017 at 10:46 PM
Racking an old PDP-11 or its peripherals can take some care, owing to the weight and bulk. The task can be made easier with this simple equipment lifting cart you can build. You can quickly, easily and accurately rack, unrack and move heavy gear with confidence - and possibly save your back as well.

Attachment 41136 Attachment 41134 Attachment 41137 Attachment 41135


You'll find more information and complete construction

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