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Basement full of DEC parts, PDP-5, PDP-8, DEC 55, and more

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    Basement full of DEC parts, PDP-5, PDP-8, DEC 55, and more

    I am the lucky new owner of piles and piles of vintage DEC equipment: subject line plus 338 Display Console, dozens of disk packs, hundreds of thousands of punch organized into programs, an IBM 129 card punch machine, Pertec tape drives, hard drives, power supplies, boxes of manuals, and lots more. Everything is located in the basement of a house I purchased to flip where the previous owner was an interface engineer. The more I cleaned out the junk from the house, the more vintage computer items I uncovered and realized these items both have value and the need to be preserved.

    The problem is I'm not a vintage computer guy, I need some help with identifying what is valuable and useful from what is scrap. Nothing in the lot was ever connected and working in its current location, rather the previous owner probably salvaged everything that his company was getting rid of and took it home for a rainy day. It is all pretty dusty from decades in the basement, but there are lots of treasures there.

    So I'm hoping there is someone on this forum living in the Ann Arbor, MI area who might be willing to take a look, or others are interested in looking at some of the pictures I have. My goal is to sell what I can and donate the rest.

    Thanks!
    Tom
    Attached Files

    #2
    Wow. There's some historically significant gear, and I hope you can find it a good home.

    Comment


      #3
      Tommy,

      You came to the right place, there are plenty of DEC experts and enthusiasts here.
      There is a manual for your 338 display here: http://www.bitsavers.org/pdf/dec/gra...chure_1967.pdf
      It shows the display in image 4, and the cabinet in images 2, 3, & 5.
      It also shows a PDP-8 that is the controller that looks like this:
      Classic PDP-8.jpg

      I don't recognize the disk drives in image 1. There should be a label on the back that shows the manufacturer and the model number.

      Just about everything DEC made had a serial number, model number, and manufacturer on a label on the back. Finding the labels would go a long way toward inventorying what you have.
      Member of the Rhode Island Computer Museum
      http://www.ricomputermuseum.org

      Comment


        #4
        Forum member Mike_Z is within day-trip distance of you, I believe, though I don't know how much free time/garage space he has.
        Computers: Amiga 1200, DEC VAXStation 4000/60, DEC MicroPDP-11/73
        Synthesizers: Roland JX-10/SH-09/MT-32/D-50, Yamaha DX7-II/V50/TX7/TG33/FB-01, Korg MS-20 Mini/ARP Odyssey/DW-8000/X5DR, Ensoniq SQ-80, E-mu Proteus/2, Moog Satellite, Oberheim SEM
        "'Legacy code' often differs from its suggested alternative by actually working and scaling." - Bjarne Stroustrup

        Comment


          #5
          Originally posted by m_thompson View Post
          I don't recognize the disk drives in image 1.
          They are PERTEC RK05 equivalents.
          I would think there will be late 70s gear in there somewhere to go along with them.

          Would be curious if you can identify where the stuff originally came from. Lots of possibilities in Ann Arbor
          Applied Dynamics, U of M, Newman Computer Exchange, etc.

          Comment


            #6
            Originally posted by commodorejohn View Post
            Forum member Mike_Z is within day-trip distance of you
            As is a large group of VCF-Midwest people around Chicago.

            Comment


              #7
              If those disk packs are Diablo 31/rk05/rk03 variants (and it looks like they are), I'd be HIGHLY interested in purchasing one, and some packs, for my Nova.
              Current favorites: IBM 5160 (EGA+Hercules+PGC, 8 floppy drives, XT-IDE), DCC D-116 (Nova 1200 clone), ASR 33 Teletype, PDP-8/I (lots of issues, restoration underway)
              Wishlist: IBM 5161 (expansion chassis), Diablo 31/RK02/RK05 or equivalent, Data General equipment, and the meaning of life.

              Comment


                #8
                I'm four hours away (near South Bend) and available all next week. I sent a private message with contact info.
                Jack
                www.computerarium.org

                Comment


                  #9
                  Oh dear... If I bought that house I would have placed my bed into the basement!

                  Roland
                  WTB: Case for Altair 8800 ...... Rolands Github projects

                  Comment


                    #12
                    Hi, I'm doing various restoration projects for a university museum and would be very interested! PM Sent.

                    Comment


                      #13
                      Hi Tom,

                      Very nice find you've got there! I'm not sure if I've ever seen a 338 Display Console in private hands, if at all come to think of it. Much of your stuff is historically significant indeed and is probably best off in a museum. (Although with COVID going on I'm not sure if any are actively buying right now - most are struggling for cash)

                      I'd be interested in the disk packs for the Pertec/RK05 style drives if you decide to sell any. I have a similar drive that's lacking packs. (I can think of a few people who'd be interested in those Pertec drives too)
                      I'm also looking for DECtapes (those are the small tapes in the blue canisters), and the following Flip-Chip cards if you happen to find any: (those are the small circuit boards with white, green, or magenta handles that you have a few boxes of)
                      G742 (Positive Logic Jumper Card)
                      M960 (TU56/TD8-E Command Cable Connector)
                      M961 (TU56/TD8-E Data Cable Connector)
                      7008447 cable

                      If you want to talk about any of this in real-time with some DEC experts, I can send you invites to the Retro Dreams or ClassicCMP discord channels. A few people who've replied to your thread are active there.

                      BTW: As tempting as it may be, please don't plug any of it in just yet - a lot of this equipment can fail in spectacular ways if it's not been used in a few decades, and needs to be tested piece-by-piece. This era of DEC gear in particular can be troublesome, as the cards need to be installed in a specific order. A few of us here are close by and could identify, test, and appraise things. (not me unfortunately, I'm in England right now)

                      Regards,
                      -Tom (oh snap!)
                      Wanted: PDP-8/f panel, 16 Sector RK05 packs, VT100, Altair 8800 CPU card, KD11-A, KE8E (M8340 M8341), memory for 11/40.
                      Available for trade: AlphaStation DS10, DS15, IBM 5150, XT, Intel MDS 230, MOS KIM-1, Many PC parts from the 5150 era onwards, DEC Storageworks HDDs, misc DIP ICs, OMNIBUS/UNIBUS/QBUS cards, 6502/8080/85/86/88/Z80 CPUs, Misc radio valves (vacuum tubes), C64, Amiga 1200, Sinclair ZX Spectrum/+/QL.

                      Comment


                        #14
                        Hi Tom,
                        I'll look tomorrow for the flip chips you mention above. I've got lots of them (all series) so I'll see if I can find the right ones for you. Same goes for the disk packs and DECtapes, lots and all must go. Had a pretty good inventory today of what the basement has to offer: a PDP-5, 2 PDP-8s, TU-55s, PERTEC D3341s, and lots more.

                        I'll take whatever help I can get with getting my collection into the right hands but I do need to sell rather than just donate.

                        Thanks for the message!
                        Tom

                        Comment


                          #15
                          No luck on the Flip Chips you're looking for, sorry...

                          Comment

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