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Type: Posts; User: Roland Huisman

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    RK05 disk drive versions

    Last Friday I've picked up these lovely little RK05 drives... There are some differences between them.
    There are two RK05 drives and two RK05J drives.

    One of the RK05 -seems- to be converted to...
  2. PDP11/05 PDP11/10 CPU board set revision compatibility

    I have a bunch of these PDP11/05 /10 CPU boards to repair. But there are several different board revisions.
    Do all 7260 boards work with all 7261 boards? Or is there a list of which board revisions...
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    Now that is a beautiful museum! I love the 3D...

    Now that is a beautiful museum! I love the 3D pictures!
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    Congratulations! :D

    Congratulations! :D
  5. Hi Monty, Not yet because I'm a bit too busy...

    Hi Monty,

    Not yet because I'm a bit too busy at the moment making some space here. Clearing out a lot of stuff which is not my core collection. There is about 450 kilogram of old computer iron...
  6. Hi Jos, Nice project! Count me in for one :D ...

    Hi Jos, Nice project! Count me in for one :D

    Regards, Roland
  7. The drifting G2 voltage was exactly what I was...

    The drifting G2 voltage was exactly what I was afraid for in the first place...
    The regulator for the G2 voltage (SCREEN) is on the line output transformer.
    (The other one is the focus)

    You...
  8. On page 100 you can see the CRT. G2 must be...

    On page 100 you can see the CRT. G2 must be 275Vdc. Interesting to see what it does with the error en what it does at normal brightness.
    The same is for the G1. Don't adjust anything while the error...
  9. Well it would be interesting to see what's...

    Well it would be interesting to see what's happening on the G1 and G2 voltage on the CRT when you see the brightness difference.
    The problem here is that you need a voltmeter which has a high input...
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    Very nice, I've saved the pictures. Too bad that...

    Very nice, I've saved the pictures. Too bad that there was no backplane with it.



    Very nice! Can you share some pictures of this board? Would love to see it.

    Regards, Roland
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    Hi Ed, Thanks. It is a beauty but I'm looking...

    Hi Ed,

    Thanks. It is a beauty but I'm looking for a backplane which fits in the machine.
    The MM11E is like the picture in my first post. It has boards in slot (B)C-F only.
    To be honest I...
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    Hi Ed, I'm searching the backplane and...

    Hi Ed,

    I'm searching the backplane and boards.
    No problem if it is defective...

    Regards, Roland
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    MM11-E or MM11-F (wanted)

    I'm searching for a MM11-E or MM11-F core memory module.
    Would be great if anyone could help me to get one.

    64169

    But I was also wondering if DEC or a third party made a quad board alternative...
  14. Nice work! 😊

    Nice work! 😊
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    An 8/M or 8/F panel will work in a 8/E indeed....

    An 8/M or 8/F panel will work in a 8/E indeed. But I know there are some minor differences in front panel hole positions. Be careful.
    The 8/E panel will not work in an 8/M or 8/F without...
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    I'm interested in the panel. Any price idea? ...

    I'm interested in the panel. Any price idea?

    Original the PDP8/E had incandescent lamps. The PDP8/M and PDP8/F had LED's.
    But many PDP8/E machines were converted to LED later. Mine as well...
    ...
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    Nice terminal! I was wondering the same. I...

    Nice terminal!



    I was wondering the same. I have some nice pictures of some CDC terminals.

    Regards, Roland
  18. This comes from the crt rubber which is aging... ...

    This comes from the crt rubber which is aging...

    This stuff turns in some sort of oil while decaying.

    64042 64043
  19. Hi Jos, that would be very nice!

    Hi Jos, that would be very nice!
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    I've got the tapes now for my 4052. Off course...

    I've got the tapes now for my 4052. Off course all the tapes have a broken belt...

    64008
  21. Very nice! This was my first intention to do...

    Very nice!

    This was my first intention to do with my 4052. :D I still have to reprogram the chips in my MFM module.
    But a few other projects are consuming my time at the moment...

    Regards,...
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    Game 2 mate Joystick schematics

    I could not resist these wireless Game Mate 2 joysticks for €4,- :D Just being curious of what is inside, so I opened them up. Has anyone drawn the schematics of these joysticks and receiver? The...
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    When I have a machine in that state I think I...

    When I have a machine in that state I think I would be happy if someone would just pick it up for free...
    You never know if there are little parts which someone can use. Maybe you should post a...
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    S375 Control panel interface 63889 63890 3310...

    S375 Control panel interface
    63889 63890

    3310 Terminal interface
    63891 63892

    3370 printer plotter controller
    63893 63894

    3564 Data channel controller
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    Rolm 1602A mil spec computer

    Okay, something new came along... A ROLM 1602A military spec computer... Also called the RuggedNova. I don't have a clue about what I can do with it. The normal 1602 seems to have a octal switch...
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