Years ago a friend, Stan Griffiths, now deceased, passed on to me this Tektronix Blue paint formula.  He called it Williamsburg Blue.  He said it came from a commercial paint company but I really do not know how to read the formula.  Here it is:
B        4Y22        BlackC        33            Yellow oxideD        1Y29        GreenW        1Y32        WhiteE         1Y45        Blue
Y = ounces4Y = 4 ounces48 Points = 1 ounce
Another formula, this one from the late Dean Kidd, is as follows:
Base, E480 DBD Interior Satin                                  Shots        Half shots
Lamp Black                37Thalo Green                22            1Thalo Blue                   30            1White             1 Oz      8
I would appreciate any feedback on these two formulas for my notes.
Reed Dickinson1705 Stonehenge DriveTustin, CA  92780reed714@sbcglobal.net

On Sat, Jul 11, 2020 at 06:24 AM, Tom Miller wrote:

There is a wire jumper at board location A-5 that provides the ground to
the HV multiplier. (note that I am going from old memory so take with a
grain of salt). Measure to ground to see if it is grounded. It is next
to a mounting screw for the multi module. Just lift one end and see if
the HV osc comes up.

If the HV osc is not running, all the CRT vltage readings will be off.

Regards

Ok, so I did lift that jumper. GOOD MEMORY BTW!!! A-5 it was!! Remind me NOT to ever play Naval BattleS with you!

The CRT came to life. I had something when playing With the Intensity and pushing the Beam Finder. But at the same time I did this, I heard some weird cracklings noises coming from the HV area, and a funny smell. Nothing caught fire though. I turn everything down and released the B Finder. Then I turned it off.
What say you? Is this good or bad? What are my options?

Best Regards

I *think* it was the other way round- Grass Valley group spun off from
Tek.
-Dave
On Saturday, July 11, 2020, 09:32:58 AM PDT, stevenhorii <
sonodocsch@gmail.com> wrote:


I have several older Tek NTSC video test items. I had a 1910 digital
generator that was useful in the days of SDTV. If I am not mistaken, Tek
acquired Grass Valley. Group. They made (make, I think) broadcast video
equipment. The Tek test signal generators, waveform monitors, vector
scopes, sync generators, etc. were made by Tek.

Steve H.

On Sat, Jul 11, 2020 at 11:27 Kurt Swanson <kurt2135@frontiernet.net>
wrote:

I have a 7J20. Unfortunately, I don't have the sampling head. I've had
it for a long time, and when I got it, I knew it was uncommon, but I
figured a sampling head would eventually turn up. No such luck - at

least

so far.
I got it wanting to do some optical spectroscopy work, and still would
like to get it working for that purpose.

If anyone has a sampling head, let me know, otherwise I might reluctantly
let this one go for sale or trade (and I do mean reluctantly).

Regards - Kurt

I have a 7J20.  Unfortunately, I don't have the sampling head.  I've had
it for a long time, and when I got it, I knew it was uncommon, but I
figured a sampling head would eventually turn up.  No such luck - at least
so far.
I got it wanting to do some optical spectroscopy work, and still would
like to get it working for that purpose.

If anyone has a sampling head, let me know, otherwise I might reluctantly
let this one go for sale or trade (and I do mean reluctantly).

Regards - Kurt

For those seeking a 7J20/J20 or parts, after the other posts on this, I’ve
decided I won’t continue searching for one other than out of interest of
what the price might be. It would be a novelty for me as I have equipment I
need to do the testing I do.

By the way, there’s an interesting module on eBay:

https://www.ebay.com/itm/1pp-1-qty-tektronix-dp-100-digital-video-probe/264388939882

Apparently a TM500 plug-in (TekWiki) and a pod is shown with it on the
TekWiki page but not by the seller on eBay.

I have several older Tek NTSC video test items. I had a 1910 digital
generator that was useful in the days of SDTV. If I am not mistaken, Tek
acquired Grass Valley. Group. They made (make, I think) broadcast video
equipment. The Tek test signal generators, waveform monitors, vector
scopes, sync generators, etc. were made by Tek.

Steve H.

On Sat, Jul 11, 2020 at 11:27 Kurt Swanson <kurt2135@frontiernet.net> wrote:

I have a 7J20. Unfortunately, I don't have the sampling head. I've had
it for a long time, and when I got it, I knew it was uncommon, but I
figured a sampling head would eventually turn up. No such luck - at least
so far.
I got it wanting to do some optical spectroscopy work, and still would
like to get it working for that purpose.

If anyone has a sampling head, let me know, otherwise I might reluctantly
let this one go for sale or trade (and I do mean reluctantly).

Regards - Kurt

On 11 Jul 2020, at 17:09, Dave Daniel <kc0wjn@gmail.com> wrote:

The other problem is that once mixed, it is difficult (but not impossible) to spray it on the parts to be painted. If one has a paint sprayer, it’s not too big a deal, except for having to clean the sprayer afterwards.

I heard a while back that one or more paint vendors would mix it and package it in spray-paint cans. I don’t know that was or still is the case.

DaveD

On Jul 11, 2020, at 11:57, Robin_Birch <robinb@ruffnready.co.uk> wrote:

Yes,
All automotive paint suppliers will colour match and create a good match for you. The problem with quoting a specific paint supplier’s base or mix colours is that only works where that manufacturer’s colours are available.

Cheers

Robin

On 11 Jul 2020, at 15:31, Stephen Hanselman <kc4sw.io@kc4sw.com> wrote:

I’m not sure about folks outside of the US but if it were me I’d take a side panel down to the paint store and have them color match it. I’ve used this method on my house where it works well, no reason it shouldn’t work on test equipment

Regards,

Stephen Hanselman
Datagate Systems, LLC

On Jul 11, 2020, at 04:26, Colin Herbert via groups.io <colingherbert=blueyonder.co.uk@groups.io> wrote:

There has been communication on Tek blue paint ever since I joined this Forum. May I respectfully suggest that you have a search through the past posts to find all you can. There is a lot of information there, though a good deal relates to US providers, I am sure that some UK-dwelling members have contributed.
Colin.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of chris gare
Sent: 10 July 2020 11:41
To: TekScopes@groups.io
Subject: Re: [TekScopes] Tektronix Blue paint - source in the UK ??

I'm from the UK and don't quite understand the "Bluebase 79126" reference? The the other colors are fine as they are in Ounces?

Help please anyone!

Chris

Oops! I have checked the voltages and while the +25V (+24.99), +15V (+14.98)
and -15V (-14.98) are just about bang on, the -25V is sitting at -3.58V. I
really can't remember if this was the case when I checked previously, but it
is now. I did manage to short something out with the DMM probes, so that may
have given this problem, but sure as sure it needs to be fixed, but how?
Colin.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Dave
Daniel
Sent: 10 July 2020 18:13
To: TekScopes@groups.io
Subject: Re: [TekScopes] FG 504 function generator odd behaviour

The first thing to do is measure the power rails to make sure that the
voltages are in spec and clean.

DaveD

On Jul 10, 2020, at 13:04, Colin Herbert via groups.io

<colingherbert=blueyonder.co.uk@groups.io> wrote:

I have an FG 504 which is showing some odd behaviour. The triangle-wave

shows asymmetry in that the negative peaks of the wave are rounded-off at
any frequency and the positive ones have a similar but lesser problem at
higher frequencies. This also seems to manifest itself as what looks like
cut-off on the negative peaks of the sine-wave and lesser cut-off on
positive peaks. While the triangle-waves are more-or-less symmetrical, the
sine-waves are definitely not so, showing a nearly three-to-one voltage
ratio in favour of positive peaks. There is also noticeably overshoot on the
square-waves at anything above 1kHz and only a DC offset at frequencies
below 80Hz.

I am totally ignorant of how this function generator produces

triangle-waves, but I do understand that the square-waves and sine-waves are
derived from the triangle-wave. Does anyone have any help that they can
offer? I would be grateful to get this useful function-generator working
properly.

Colin.

On Jul 10, 2020, at 13:04, Colin Herbert via groups.io

I have an FG 504 which is showing some odd behaviour. The triangle-wave

I am totally ignorant of how this function generator produces

Colin.

I notice something I didn’t pay attention to before. That is TP1486 should go from 15V to 75V depending on the position of the Intensity control knob. However, mine goes from 15V to only 31V with the intensity maxed out...
Hmmmmm.... Interesting... There is definitely something there as well.

PS: Where do I lift the HV multiplier lug?

I have a 7J20. Unfortunately, I don't have the sampling head. I've had
it for a long time, and when I got it, I knew it was uncommon, but I
figured a sampling head would eventually turn up. No such luck - at least
so far.
I got it wanting to do some optical spectroscopy work, and still would
like to get it working for that purpose.

If anyone has a sampling head, let me know, otherwise I might reluctantly
let this one go for sale or trade (and I do mean reluctantly).

Regards - Kurt