DEC H500 Digital Computer Lab

[Tom Hunter]

Hi Ethan,

My count is zero. I had no original patch wires at all.   :-(
I made mine from some cheap banana plugs and silicon leads I bought on
AliExpress.
Only about 30 % of the plugs were a good fit, the rest I had to modify to
make them usable.
The YouTube video from my original post shows the patch wires I made.
The originals were using 0.1" taper pins, but I never saw an original
(other than photos).
I couldn't find a source for the correct 0.1" taper pins so the banana
plugs were my next best choice.

Tom

On Sat, Mar 12, 2022 at 1:35 AM Ethan Dicks <ethan.dicks at gmail.com> wrote:

> On Fri, Mar 11, 2022 at 8:03 AM Tom Hunter via cctalk
> <cctalk at classiccmp.org> wrote:
> > As there is no real cctalk traffic other than test messages I thought I
> > post something a bit more interesting. Here is a short video of my fully
> > restored DEC H500 Computer Lab with an 8-bit counter implementation
> > including reset:
>
> Hi, Tom,
>
> Great post and timely.  I recently got leads for my H-500 but I didn't
> get exactly "one set". I know I didn't get any of the longest wires
> but I also got a couple extra, I think, brown ones for the tips.  I
> read through the handbooks and the closest thing I found was page 173
> in the Workbook that mentions "Bundle of Taper-Pin Patchcords (107 of
> Assorted Lengths), Model Number 916, $30).
>
> Could you post how many of each color you have?  It's possible, of
> course, that you don't have exactly "one set" either, but if you
> happen to have 107 wires, that's a good indication, especially if your
> tally matches mine anywhere.
>
> Here's what I have:
>
> 22 BRN  ~ 3" ( 2-7/8")
> 30 RED  ~ 5" ( 4-7/8")
> 25 ORN  ~ 7" ( 6-7/8")
> 20 YEL  ~ 9" ( 8-7/8")
> 10 GRN  ~17" (16-7/8")
> 0 BLU
> -----
> 107
>
> -ethan
>