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computers / alt.sys.pdp11 / COlor of PDP-11/23 Front Panel

SubjectAuthor
* COlor of PDP-11/23 Front Panelpdr0663
`* Re: COlor of PDP-11/23 Front PanelVincent Slyngstad
 `* Re: COlor of PDP-11/23 Front PanelLars Brinkhoff
  `* Re: COlor of PDP-11/23 Front PanelVincent Slyngstad
   `* Re: COlor of PDP-11/23 Front Panelpdr0663
    `- Re: COlor of PDP-11/23 Front PanelLars Brinkhoff

1
COlor of PDP-11/23 Front Panel

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Subject: COlor of PDP-11/23 Front Panel
From: paul@rileyriot.com (pdr0663)
Injection-Date: Wed, 09 Jun 2021 00:25:03 +0000
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 by: pdr0663 - Wed, 9 Jun 2021 00:25 UTC

Dear PDP-11 Team,

I bought a front panel from a PDP-11/23 on eBay to go with a frankenstein machine I'm making up. It's in pretty poor condition, and I want to restore it, so will need to be painted.

My question is, does anyone know the "official" color specififcations for these parts? It's a whitish beige color, as you'll all be no doubt familiar. I'm looking for a color specified as:
- RALxxxx
- Pantone xxx
- Rxx Gxx Bxx
- Commercial brand and color name or number.

Anyone know?

Paul

Re: COlor of PDP-11/23 Front Panel

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From: vrs42@hotmail.com (Vincent Slyngstad)
Newsgroups: alt.sys.pdp11
Subject: Re: COlor of PDP-11/23 Front Panel
Date: Wed, 9 Jun 2021 10:14:04 -0700
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 by: Vincent Slyngstad - Wed, 9 Jun 2021 17:14 UTC

On 6/8/2021 5:25 PM, pdr0663 wrote:
> Dear PDP-11 Team,
>
> I bought a front panel from a PDP-11/23 on eBay to go with a frankenstein machine I'm making up. It's in pretty poor condition, and I want to restore it, so will need to be painted.
>
> My question is, does anyone know the "official" color specififcations for these parts? It's a whitish beige color, as you'll all be no doubt familiar. I'm looking for a color specified as:
> - RALxxxx
> - Pantone xxx
> - Rxx Gxx Bxx
> - Commercial brand and color name or number.
>
> Anyone know?

There's an extensive discussion of DEC colors here:
https://www.vcfed.org/forum/forum/genres/dec/77767-reproduction-pdp-8e-toggle-switches

but I think you are basically looking for "Munsell N 9.5", which is a
shade of gray that is 9.5 out of 10 "white" (and 0.5 "black").

Here's the relevant standard:
http://www.bitsavers.org/pdf/dec/standards/EL-00092-00-0_F_Finish_and_Color_Standard_Dec82.pdf

CHD's take on it:
http://www.chdickman.com/pdp8/DECcolors/

and mine:
http://svn.so-much-stuff.com/svn/trunk/so-much-stuff.com/pdp8/repair/dec-std.html

I found any number of calculators online which attempt to convert the
RGB values to paint colors you can buy. It's difficult because it's
affected by illumination, etc. Not to mention the color you had before
may have yellowed or whatever, so the shiny new color looks "off".

Fortunately, you're going for a neutral mostly white, so it is likely to
look fine in most light.

Vince

Re: COlor of PDP-11/23 Front Panel

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From: lars.spam@nocrew.org (Lars Brinkhoff)
Newsgroups: alt.sys.pdp11
Subject: Re: COlor of PDP-11/23 Front Panel
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 by: Lars Brinkhoff - Wed, 9 Jun 2021 17:45 UTC

Vincent Slyngstad wrote:
> There's an extensive discussion of DEC colors here:
> https://www.vcfed.org/forum/forum/genres/dec/77767-reproduction-pdp-8e-toggle-switches
>
> but I think you are basically looking for "Munsell N 9.5", which is a
> shade of gray that is 9.5 out of 10 "white" (and 0.5 "black").
>
> Here's the relevant standard:
> http://www.bitsavers.org/pdf/dec/standards/EL-00092-00-0_F_Finish_and_Color_Standard_Dec82.pdf
>
> CHD's take on it:
> http://www.chdickman.com/pdp8/DECcolors/
>
> and mine:
> http://svn.so-much-stuff.com/svn/trunk/so-much-stuff.com/pdp8/repair/dec-std.html

What color is a VT100? I read all of the above, but I didn't see
anyting other than "Digital Brown" which doesn't seem to be the usual
color.

I'm 3D printing Michael Gardi's 2:3 VT100 model.

Re: COlor of PDP-11/23 Front Panel

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From: vrs42@hotmail.com (Vincent Slyngstad)
Newsgroups: alt.sys.pdp11
Subject: Re: COlor of PDP-11/23 Front Panel
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 by: Vincent Slyngstad - Wed, 9 Jun 2021 20:58 UTC

On 6/9/2021 10:45 AM, Lars Brinkhoff wrote:
> What color is a VT100? I read all of the above, but I didn't see
> anyting other than "Digital Brown" which doesn't seem to be the usual
> color.
>
> I'm 3D printing Michael Gardi's 2:3 VT100 model.

I may be clueless, but I thought the VT100 was essentially the same
white, with black trim.

Surviving examples are often significantly yellowed, though.

Vince

Re: COlor of PDP-11/23 Front Panel

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Subject: Re: COlor of PDP-11/23 Front Panel
From: paul@rileyriot.com (pdr0663)
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 by: pdr0663 - Wed, 9 Jun 2021 22:47 UTC

On Thursday, 10 June 2021 at 6:58:53 am UTC+10, Vincent Slyngstad wrote:
> On 6/9/2021 10:45 AM, Lars Brinkhoff wrote:
> > What color is a VT100? I read all of the above, but I didn't see
> > anyting other than "Digital Brown" which doesn't seem to be the usual
> > color.
> >
> > I'm 3D printing Michael Gardi's 2:3 VT100 model.
> I may be clueless, but I thought the VT100 was essentially the same
> white, with black trim.
>
> Surviving examples are often significantly yellowed, though.
>
> Vince
I have a VT100, and I think the dark color is actually brown, quite dark.

Paul

Re: COlor of PDP-11/23 Front Panel

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From: lars.spam@nocrew.org (Lars Brinkhoff)
Newsgroups: alt.sys.pdp11
Subject: Re: COlor of PDP-11/23 Front Panel
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<1622a03f-c5c8-499f-a994-b14d09a3018cn@googlegroups.com>
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 by: Lars Brinkhoff - Thu, 10 Jun 2021 05:01 UTC

pdr0663 wrote:
> Vincent Slyngstad wrote:
>>> What color is a VT100? I read all of the above, but I didn't see
>>> anyting other than "Digital Brown" which doesn't seem to be the
>>> usual color.
>>
>> I may be clueless, but I thought the VT100 was essentially the same
>> white, with black trim. Surviving examples are often significantly
>> yellowed, though.

You may well be right!

> I have a VT100, and I think the dark color is actually brown, quite
> dark.

Interesting, so maybe that is "Digital Brown".

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