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Hi Les,

Thanks for the informative reply! First - serial numbers, not on the back but? yes, stamped into a lower chassis rail is "666." (that number, I hope, is not an omen!) and hand written and varnished over on the power transformer is "58666". Until I find out different I'm assuming 58 could be the year and 666 the serial number. If so then that would probably make this one of the last 'pre-facelift' Serviscopes produced and whether they called it an S31 at that point I don't know.

It is very similar in physical construction to an S31 and the only schematic differences I've spotted so far between the S31 and what I see in front of me are: No series anode resistors on the rectifier (EZ81), slight asymmetry between the +ve and -ve 'Y' amp input stages (ECF80s) in terms of the anode and grid biasing arrangements and the input attenuator is 'missing' the probe matching trimmer caps.

I just won an equally beat-up S31 which I'm collecting on Friday so I'll do a compare and contrast when I get it home. I also got a TQ 'C1' Scope Calibrator a few weeks back - Serial number 3 - so an early model as well!? I've got that working nicely too, in fact you can just see part of it's chassis, the covers are going out for painting, in the picture of the scope which is displaying it's output.

As far as the Tek involvement goes, the article in TekTalk announcing the addition of Telequipment to Tektronix is dated Spring 1967 so about then I guess?

True double beam? Yes, when I made the move to Electronics Technician at the Cavendish labs in the late '60s one of the first things I was handed was a heap of dead or dying? D43s - they had dozens and dozens of them in the teaching and research labs - to repair/recalibrate. A very nice instrument for the money but fried themselves all the time. Convection cooling is nice and quiet but sadly just not adequate for continuous use!

I hope we can find out more early history, I wonder if there are any ex Telequipment folk out there because it would be great to get it written down.

All the best,
Adrian


On 4/3/2018 7:28 PM, Leslie Austin wrote:

That is an interesting scope you have there Adrian. I have seen or owned many S31 scopes, but that one is different to anything I have seen. There seem to be many differences, but without doubt it is either a prototype or an early model unknown to me. Every one I have seen had a serial number on the back, does this? Every S31 (and S32, S32A, D32, S/D33, S/D43, D*53*) I have seen had two covers, inverted L shape, with two screws retaining handle and sides. I have never seen WHITE OEM knobs!

I had a rather special device, obviously based on the S31, but it was a TV monochrome CRT tester. The rear panel had been "turned around" so that the S31 ID info was on the inside. Different transformer clearly different circuit, and all valves had been removed. I decided it was a project to be "analysed", and I used to bring it out on Christmas day to kill time, but as so often happens, it never got finalised. I offered it FOC on a UK forum, got an assurance it would be "completed", but 12months later found it had? had the CRT removed and the rest scrapped. Hmm!

But back to TQ generally. I don't know when the takeover took place, but by 1968, Tek were certainly getting involved. I have here a conversion list of TQ part numbers, for example, the mains transformer for the S31 had been part number T1, but now became 150-0071-00, which is clearly a Tek part number. The list is dated May 1968.

It is interesting to look at the front of TQ scopes. Early models clearly fitted with UK sourced knobs; Mostly black with some red "outers" with stacked controls. Common from S31 thro to the DM53A, but from the DM64 (terrible 'scope, TEK CRT), D*63, D65/66/67, D75, D83 they all had US sourced TEK knobs, and knob prices shot up!

There is a 1973 US version catalogue of Telequipment scopes available online, the knob styles can be clearly seen there.

Every TQ scope from S31 had TRIGGERED sweep, until then all cheaper UK scopes were non-triggered. That is what made them so useful for any decent TV repair shop, and affordable.

TQ also produced suitably modified scopes for the US firm Perkin-Elmer. A variation of the S51 was produced as a heart monitor. I think I still have a bare board for one, and some circuitry for it.

C.M. Jones referred to his D31, with true dual gun/beam tube. Quite a few of the early "D" scopes had dual guns, most with single timebase but dual Y-amps. There were however the D55, D55A and D56 which had true dual guns, dual Y amps, AND dual timebases!

Earlier I referred to the DM64, with its lousy TEK bistable CRT. However TQ produced the D53S, DM53A and the DM63. These were REAL storage scopes with variable persistence, all using GEC storage tubes. They were quality, and on a DM53A I could store a trace, switch off the scope, and switch back on a couple of MONTHS later, with the trace still stored!

I used to buy, service, calibrate and sell scopes from 1979 for about 10 years. I quickly learned that anything with valves, other than TQ or TEK were best left to others, stuff like Hartley, and Advance reminded me of some Pye Colour TVs, terrible.

I still have a few service docs on the late '60s and 70s TQ scopes, and if an S31 landed in front of me now, I would enjoy servicing and calibrating it.

Les.


On 03/04/18 14:34, Adrian wrote:

So once upon a time, in Olde Merrie England, there was a company that produced cheap but adequate oscilloscopes which they sold around the world. Then, one day they decided to remodel them to make them more appealing to their cousins in a land far away across the sea. This must have worked because a few years later one of their cousins, a Mr Tek Tronix, sailed all the way across the sea to England and bought the entire company!

Ahem, sorry!...... Meanwhile, back at the point.... I acquired a basket case of an early (pre '58 facelift) Serviscope which may be either an early S31 or a forerunner of it. This example had obviously done service as a parts mule prior to being stored carefully for a decade or two in the corner of a particularly wet and muddy field. After spending way more hours and money than it will ever be worth in a million years it is pretty much up and running and, as it is devoid of its case, I would like to find a picture so I can re-make a reasonable facsimile of it.

In more detail, the thing is very close in both appearance and schematic to an S31. It is constructed in a point-to-point way with tag-strip and not a PCB in sight. The front panel is finished in silver (was once anyway!) hammer finish paint with white legends and black & white knobs. From the looks of it the case must have been a 5-sided box a la the S51 and was retained by two 1/4 turn fasteners on the rear panel.

Some pix here: /g/TekScopes/album?id=42175 Please ignore the tacked-on components, they were just to get it going and will be replaced with more authentic looking parts shortly. The chassis mounted caps and selenium rectifiers have been hollowed out and re-filled already!

From my use of google at least, information on Telequipment Ltd and

its products prior to the product facelift and subsequent takeover seems scarce, most of the very little I know has been thanks to the VintageTek museum page and a link to the spring '67 article in TekTalk about the acquisition. Bob Haas and Dave Brown at VintageTek have been really helpful and burrowed around their archives but not found anything. I was wondering if anyone in this group may know, or could point me at, people who could help fill in the gap. Apart from anything else Telequipment is a bit of UK industrial history that should not be lost?

...and if you have been, thanks for reading!
Best,
Adrian

That is an interesting scope you have there Adrian. I have seen or owned many S31 scopes, but that one is different to anything I have seen. There seem to be many differences, but without doubt it is either a prototype or an early model unknown to me. Every one I have seen had a serial number on the back, does this? Every S31 (and S32, S32A, D32, S/D33, S/D43, D*53*) I have seen had two covers, inverted L shape, with two screws retaining handle and sides. I have never seen WHITE OEM knobs!

I had a rather special device, obviously based on the S31, but it was a TV monochrome CRT tester. The rear panel had been "turned around" so that the S31 ID info was on the inside. Different transformer clearly different circuit, and all valves had been removed. I decided it was a project to be "analysed", and I used to bring it out on Christmas day to kill time, but as so often happens, it never got finalised. I offered it FOC on a UK forum, got an assurance it would be "completed", but 12months later found it had? had the CRT removed and the rest scrapped. Hmm!

But back to TQ generally. I don't know when the takeover took place, but by 1968, Tek were certainly getting involved. I have here a conversion list of TQ part numbers, for example, the mains transformer for the S31 had been part number T1, but now became 150-0071-00, which is clearly a Tek part number. The list is dated May 1968.

It is interesting to look at the front of TQ scopes. Early models clearly fitted with UK sourced knobs; Mostly black with some red "outers" with stacked controls. Common from S31 thro to the DM53A, but from the DM64 (terrible 'scope, TEK CRT), D*63, D65/66/67, D75, D83 they all had US sourced TEK knobs, and knob prices shot up!

There is a 1973 US version catalogue of Telequipment scopes available online, the knob styles can be clearly seen there.

Every TQ scope from S31 had TRIGGERED sweep, until then all cheaper UK scopes were non-triggered. That is what made them so useful for any decent TV repair shop, and affordable.

TQ also produced suitably modified scopes for the US firm Perkin-Elmer. A variation of the S51 was produced as a heart monitor. I think I still have a bare board for one, and some circuitry for it.

C.M. Jones referred to his D31, with true dual gun/beam tube. Quite a few of the early "D" scopes had dual guns, most with single timebase but dual Y-amps. There were however the D55, D55A and D56 which had true dual guns, dual Y amps, AND dual timebases!

Earlier I referred to the DM64, with its lousy TEK bistable CRT. However TQ produced the D53S, DM53A and the DM63. These were REAL storage scopes with variable persistence, all using GEC storage tubes. They were quality, and on a DM53A I could store a trace, switch off the scope, and switch back on a couple of MONTHS later, with the trace still stored!

I used to buy, service, calibrate and sell scopes from 1979 for about 10 years. I quickly learned that anything with valves, other than TQ or TEK were best left to others, stuff like Hartley, and Advance reminded me of some Pye Colour TVs, terrible.

I still have a few service docs on the late '60s and 70s TQ scopes, and if an S31 landed in front of me now, I would enjoy servicing and calibrating it.

Les.


On 03/04/18 14:34, Adrian wrote:

So once upon a time, in Olde Merrie England, there was a company that produced cheap but adequate oscilloscopes which they sold around the world. Then, one day they decided to remodel them to make them more appealing to their cousins in a land far away across the sea. This must have worked because a few years later one of their cousins, a Mr Tek Tronix, sailed all the way across the sea to England and bought the entire company!

Ahem, sorry!...... Meanwhile, back at the point.... I acquired a basket case of an early (pre '58 facelift) Serviscope which may be either an early S31 or a forerunner of it. This example had obviously done service as a parts mule prior to being stored carefully for a decade or two in the corner of a particularly wet and muddy field. After spending way more hours and money than it will ever be worth in a million years it is pretty much up and running and, as it is devoid of its case, I would like to find a picture so I can re-make a reasonable facsimile of it.

In more detail, the thing is very close in both appearance and schematic to an S31. It is constructed in a point-to-point way with tag-strip and not a PCB in sight. The front panel is finished in silver (was once anyway!) hammer finish paint with white legends and black & white knobs. From the looks of it the case must have been a 5-sided box a la the S51 and was retained by two 1/4 turn fasteners on the rear panel.

Some pix here: /g/TekScopes/album?id=42175 Please ignore the tacked-on components, they were just to get it going and will be replaced with more authentic looking parts shortly. The chassis mounted caps and selenium rectifiers have been hollowed out and re-filled already!

From my use of google at least, information on Telequipment Ltd and

its products prior to the product facelift and subsequent takeover seems scarce, most of the very little I know has been thanks to the VintageTek museum page and a link to the spring '67 article in TekTalk about the acquisition. Bob Haas and Dave Brown at VintageTek have been really helpful and burrowed around their archives but not found anything. I was wondering if anyone in this group may know, or could point me at, people who could help fill in the gap. Apart from anything else Telequipment is a bit of UK industrial history that should not be lost?

...and if you have been, thanks for reading!
Best,
Adrian

wrote:

Hi Dennis

Just been looking at that exceptionally extensive list. There are versions
of the SG505 and AA501 that
aren't listed:

SG505 MOD WQ
SG505 MOD WR
AA501A MOD WQ

These all fit together in a power frame with specific rear interface
connections to link them all
together into a measurement suite.

I have photos, and partial schematics of the SG505 versions.

Craig

My apologies.
The correct link is


Dennis Tillman W7PF

My apologies.
The correct link is


Dennis Tillman W7PF

On 04/03/2018 01:03 PM, Dave Daniel wrote:

If one does that, is there a way to keep people from making money on the product without spending a lot of money on legal fees?

No. Copyright is a "right to sue" is all.

For recouping the cost of a rare 7000 manual, the best route would be to ask on this list for a group of interested
folks to share the cost of scanning it and deliver them the results with an agreement that it is rights reserved derivative copyright and not www publish it.

If one does that, is there a way to keep people from making money on the product without spending a lot of money on legal fees?

So once upon a time, in Olde Merrie England, there was a company that produced cheap but adequate oscilloscopes which they sold around the world. Then, one day they decided to remodel them to make them more appealing to their cousins in a land far away across the sea. This must have worked because a few years later one of their cousins, a Mr Tek Tronix, sailed all the way across the sea to England and bought the entire company!

Ahem, sorry!...... Meanwhile, back at the point.... I acquired a basket case of an early (pre '58 facelift) Serviscope which may be either an early S31 or a forerunner of it. This example had obviously done service as a parts mule prior to being stored carefully for a decade or two in the corner of a particularly wet and muddy field. After spending way more hours and money than it will ever be worth in a million years it is pretty much up and running and, as it is devoid of its case, I would like to find a picture so I can re-make a reasonable facsimile of it.

In more detail, the thing is very close in both appearance and schematic to an S31. It is constructed in a point-to-point way with tag-strip and not a PCB in sight. The front panel is finished in silver (was once anyway!) hammer finish paint with white legends and black & white knobs. From the looks of it the case must have been a 5-sided box a la the S51 and was retained by two 1/4 turn fasteners on the rear panel.

Some pix here: /g/TekScopes/album?id=42175 Please ignore the tacked-on components, they were just to get it going and will be replaced with more authentic looking parts shortly. The chassis mounted caps and selenium rectifiers have been hollowed out and re-filled already!

From my use of google at least, information on Telequipment Ltd and its products prior to the product facelift and subsequent takeover seems scarce, most of the very little I know has been thanks to the VintageTek museum page and a link to the spring '67 article in TekTalk about the acquisition. Bob Haas and Dave Brown at VintageTek have been really helpful and burrowed around their archives but not found anything. I was wondering if anyone in this group may know, or could point me at, people who could help fill in the gap. Apart from anything else Telequipment is a bit of UK industrial history that should not be lost?

...and if you have been, thanks for reading!
Best,
Adrian

Writing a reply to Phillip Potter's e-mail address, it bounced back.
I've already signaled the inconvenience to the recipient's AT&T mail server. They replied me to wait 24-48 hours to solve the problem.

In the meanwhile I want to advise Fabio Trevisan also. I wrote him an e-mail to, with no reply, some weeks ago.

I've noticed that gmail.com seems to mark my e-mail sent to it as spam and blocks it, putting my mail in the spam folder of the recipients.
Several of my friends found my emails in their spam folder. And all of them used gmail.

I don't know really why that happens. My e-mail address is active by 20 years.
I'm using the same (paid) server since then. Only in last three/four months I've noted that very irritating inconvenience.

Max

If you really want stuff to be available for free, but not have others make
money from it, you could try releasing it using the Creative Commons
license:

Copyright Note:
All content Copyright (C) 2018 by XXYYZZ.

[image: Creative Commons License]
<>
This work is licensed under a Creative Commons
Attribution-NonCommercial-ShareAlike 4.0 International License
<>.

Basically the above says it can be shared, they have to attribute it to
you, and no one can sell it. They have a variety of licenses with different
features.

That supposedly will give you some backing, in some countries at least, to
force something to be taken down or even sue someone if they are making
money from your work. I do not know how well it works in practice.

Regards,

Mark
W7MLG

On Tue, Apr 3, 2018 at 10:34 AM, Dave Daniel <kc0wjn@...> wrote:

I have refrained from contributing to this thread because I have been
afraid of going overboard.

There have been a lot of good point made (like you need me to tell you
that!).

Once you put something out on the internet that is freely downloadable,
people will download it. If they can make money somehow by using it, some
will do so. Whether or not there is anything the person who uploaded the
resource can do about that is unclear tome, but ti seems probable that in
pretty much all cases it is not worth the money that would have to be spent
to do so.

I did want to point out, though, wrt to Dennis' concerns about posting
rare documents, that Adobe DOES have a facility for limiting access to PDF
files by password. If one wished to distribute and control access to a PDF,
one can distribute the document and supply the password to those who are to
be granted access to the document.

Yes, there is the danger of the password eventually getting out into the
public domain, and I don't have a good answer for how to protect against
that. And, yes, it is possible that someone who has been granted access may
pass the document along with the password to others, and I don't know how
to get around that either.

DaveD

On 4/3/2018 11:19 AM, Dennis Tillman W7PF wrote:

Hi SnapDiode,

You definitely hit a nerve. 17 years ago I began keeping lists of various
Tek products I had so I didn't buy something I already owned. That was how
my list of TM500/TM5000 plugins got started. It quickly expanded to include
unusual, rare, one of a kind, other manufacturers, or odd ball TM500/TM5000
plugins that I saw anywhere. The list grew to a point that David DiGiacomo
contacted me and offered to host a copy (Thank you David!) on his web site:
www.davmar.com
Other web sites found the list useful and copied it verbatim which was
fine with me since my name was plainly visible at the top so it was clear I
was the author.

Then one day years ago I discovered there was an EXACT copy of my list
with someone else's name at the top. This P#$*@K was taking credit for my
work. He is somewhere in England. I tried contacting him at his email
address which was also there in the list he purloined but of course he
never replied.

Even now as I write this it makes my blood boil that someone would do
this. After that it took years for me to trust someone again with other
lists of Tek equipment I was maintaining. That is the damage that can come
from theft of intellectual property such as your 1S1 manual and my list.
Kurt Rosenfeld, the creator of TekWiki, finally restored my trust because
he is doing something so important and so professional that he deserves all
of our support. I have given him other lists of Tek plugins, application
notes, etc. that I have accumulated. But I have still more that I am
conflicted about sharing.

I have some extremely rare 7000 manuals that were very expensive and, as
far as I know, they are the only ones in existence. If I make them
available for scanning how do I get my investment back? Part of me sees
this as selfish, but my wife works hard to support us and she wants to know
when my passion for Tektronix is going to stop costing her money and
contribute to our financial obligations. Every time I go to a swap meet I
have to consistently come back with more money than I brought with me. So
far that hasn't happened. My wife needs me to do much more than that if I
am to carry my share of our living expenses.

Dennis Tillman W7PF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
snapdiode via Groups.Io
Sent: Monday, April 02, 2018 5:54 PM
Subject: [TekScopes] Your opinion on using other people's work

So about 15 years ago I made a 1S1 manual in Word by scanning the
original in three passes, to end up with OCR'd text, B/W diagrams,
grayscale pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay


with-11-X17-foldouts/202225020981?hash=item2f158cf035:g:IdcAAOSwklhaf5F6

I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating
that PDF?

Besides I keep finding typos and graphical oddities in the document.

I have refrained from contributing to this thread because I have been
afraid of going overboard.

There have been a lot of good point made (like you need me to tell you
that!).

Once you put something out on the internet that is freely downloadable,
people will download it. If they can make money somehow by using it, some
will do so. Whether or not there is anything the person who uploaded the
resource can do about that is unclear tome, but ti seems probable that in
pretty much all cases it is not worth the money that would have to be spent
to do so.

I did want to point out, though, wrt to Dennis' concerns about posting
rare documents, that Adobe DOES have a facility for limiting access to PDF
files by password. If one wished to distribute and control access to a PDF,
one can distribute the document and supply the password to those who are to
be granted access to the document.

Yes, there is the danger of the password eventually getting out into the
public domain, and I don't have a good answer for how to protect against
that. And, yes, it is possible that someone who has been granted access may
pass the document along with the password to others, and I don't know how
to get around that either.

DaveD

On 4/3/2018 11:19 AM, Dennis Tillman W7PF wrote:

Hi SnapDiode,

You definitely hit a nerve. 17 years ago I began keeping lists of various
Tek products I had so I didn't buy something I already owned. That was how
my list of TM500/TM5000 plugins got started. It quickly expanded to include
unusual, rare, one of a kind, other manufacturers, or odd ball TM500/TM5000
plugins that I saw anywhere. The list grew to a point that David DiGiacomo
contacted me and offered to host a copy (Thank you David!) on his web site:
www.davmar.com
Other web sites found the list useful and copied it verbatim which was
fine with me since my name was plainly visible at the top so it was clear I
was the author.

Then one day years ago I discovered there was an EXACT copy of my list
with someone else's name at the top. This P#$*@K was taking credit for my
work. He is somewhere in England. I tried contacting him at his email
address which was also there in the list he purloined but of course he
never replied.

Even now as I write this it makes my blood boil that someone would do
this. After that it took years for me to trust someone again with other
lists of Tek equipment I was maintaining. That is the damage that can come
from theft of intellectual property such as your 1S1 manual and my list.
Kurt Rosenfeld, the creator of TekWiki, finally restored my trust because
he is doing something so important and so professional that he deserves all
of our support. I have given him other lists of Tek plugins, application
notes, etc. that I have accumulated. But I have still more that I am
conflicted about sharing.

I have some extremely rare 7000 manuals that were very expensive and, as
far as I know, they are the only ones in existence. If I make them
available for scanning how do I get my investment back? Part of me sees
this as selfish, but my wife works hard to support us and she wants to know
when my passion for Tektronix is going to stop costing her money and
contribute to our financial obligations. Every time I go to a swap meet I
have to consistently come back with more money than I brought with me. So
far that hasn't happened. My wife needs me to do much more than that if I
am to carry my share of our living expenses.

Dennis Tillman W7PF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
snapdiode via Groups.Io
Sent: Monday, April 02, 2018 5:54 PM
Subject: [TekScopes] Your opinion on using other people's work

So about 15 years ago I made a 1S1 manual in Word by scanning the
original in three passes, to end up with OCR'd text, B/W diagrams,
grayscale pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay


with-11-X17-foldouts/202225020981?hash=item2f158cf035:g:IdcAAOSwklhaf5F6

I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating
that PDF?

Besides I keep finding typos and graphical oddities in the document.

Not to be outdone (who says size is not important?) this was my first
scope, 1961, an 11th birthday present from my Dad.



Busted and scrapped by the Cavendish Labs in Cambridge.

Got it working ..... but only recently wondered who thought giving an 11
year old kid a box full of lethal voltages and encouraging him to poke
around inside it was a good idea? I'm still here so - Sorry Dad, Plan A
failed!


On 4/3/2018 4:41 PM, Craig Sawyers wrote:

That's an interesting little scope. I have a soft spot for the early

Telequipment scopes, since they

seemed to be all that was affordable on the secondhand market for

schoolboys like me in the 1980s.

My first scope was a Telequipment D31.

Luxury! My first scope, aged 16 was a Hartley 13A, and real

just-post-wwII behemoth. For pics of what

this pretty useless performance beast looked like
.

Because no knob setting was calibrated, there were timing markers that

you could display in order to

get an idea of the sweep speed. Mine was better condition than the one

on the link - there was a front

cover that housed probes (ie bits of rubber covered wire with croc

clips) and a cathode follower

probe.

I have absolutely no idea what I did with mine - probably put it in the

classified of the local

newspaper.

Craig

Hi SnapDiode,

You definitely hit a nerve. 17 years ago I began keeping lists of various Tek products I had so I didn't buy something I already owned. That was how my list of TM500/TM5000 plugins got started. It quickly expanded to include unusual, rare, one of a kind, other manufacturers, or odd ball TM500/TM5000 plugins that I saw anywhere. The list grew to a point that David DiGiacomo contacted me and offered to host a copy (Thank you David!) on his web site: www.davmar.com

Other web sites found the list useful and copied it verbatim which was fine with me since my name was plainly visible at the top so it was clear I was the author.

Then one day years ago I discovered there was an EXACT copy of my list with someone else's name at the top. This P#$*@K was taking credit for my work. He is somewhere in England. I tried contacting him at his email address which was also there in the list he purloined but of course he never replied.

Even now as I write this it makes my blood boil that someone would do this. After that it took years for me to trust someone again with other lists of Tek equipment I was maintaining. That is the damage that can come from theft of intellectual property such as your 1S1 manual and my list. Kurt Rosenfeld, the creator of TekWiki, finally restored my trust because he is doing something so important and so professional that he deserves all of our support. I have given him other lists of Tek plugins, application notes, etc. that I have accumulated. But I have still more that I am conflicted about sharing.

I have some extremely rare 7000 manuals that were very expensive and, as far as I know, they are the only ones in existence. If I make them available for scanning how do I get my investment back? Part of me sees this as selfish, but my wife works hard to support us and she wants to know when my passion for Tektronix is going to stop costing her money and contribute to our financial obligations. Every time I go to a swap meet I have to consistently come back with more money than I brought with me. So far that hasn't happened. My wife needs me to do much more than that if I am to carry my share of our living expenses.

Dennis Tillman W7PF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of snapdiode via Groups.Io
Sent: Monday, April 02, 2018 5:54 PM
Subject: [TekScopes] Your opinion on using other people's work

So about 15 years ago I made a 1S1 manual in Word by scanning the original in three passes, to end up with OCR'd text, B/W diagrams, grayscale pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay



I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating that PDF?

Besides I keep finding typos and graphical oddities in the document.

Hi SnapDiode,

You definitely hit a nerve. 17 years ago I began keeping lists of various Tek products I had so I didn't buy something I already owned. That was how my list of TM500/TM5000 plugins got started. It quickly expanded to include unusual, rare, one of a kind, other manufacturers, or odd ball TM500/TM5000 plugins that I saw anywhere. The list grew to a point that David DiGiacomo contacted me and offered to host a copy (Thank you David!) on his web site: www.davmar.com
Other web sites found the list useful and copied it verbatim which was fine with me since my name was plainly visible at the top so it was clear I was the author.

Then one day years ago I discovered there was an EXACT copy of my list with someone else's name at the top. This P#$*@K was taking credit for my work. He is somewhere in England. I tried contacting him at his email address which was also there in the list he purloined but of course he never replied.

Even now as I write this it makes my blood boil that someone would do this. After that it took years for me to trust someone again with other lists of Tek equipment I was maintaining. That is the damage that can come from theft of intellectual property such as your 1S1 manual and my list. Kurt Rosenfeld, the creator of TekWiki, finally restored my trust because he is doing something so important and so professional that he deserves all of our support. I have given him other lists of Tek plugins, application notes, etc. that I have accumulated. But I have still more that I am conflicted about sharing.

I have some extremely rare 7000 manuals that were very expensive and, as far as I know, they are the only ones in existence. If I make them available for scanning how do I get my investment back? Part of me sees this as selfish, but my wife works hard to support us and she wants to know when my passion for Tektronix is going to stop costing her money and contribute to our financial obligations. Every time I go to a swap meet I have to consistently come back with more money than I brought with me. So far that hasn't happened. My wife needs me to do much more than that if I am to carry my share of our living expenses.

Dennis Tillman W7PF

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of snapdiode via Groups.Io
Sent: Monday, April 02, 2018 5:54 PM
Subject: [TekScopes] Your opinion on using other people's work

So about 15 years ago I made a 1S1 manual in Word by scanning the original in three passes, to end up with OCR'd text, B/W diagrams, grayscale pictures, and 11x17 color schematic pages.
I made it into a PDF and it ended up on BAMA.as a free download.



Which is fine, but now I see this on eBay



I can see by the thumbnail this is my PDF.

Is it too much to expect some sort of credit for the work of creating that PDF?

Besides I keep finding typos and graphical oddities in the document.

That's an interesting little scope. I have a soft spot for the early Telequipment scopes, since they
seemed to be all that was affordable on the secondhand market for schoolboys like me in the 1980s.
My first scope was a Telequipment D31.

Luxury! My first scope, aged 16 was a Hartley 13A, and real just-post-wwII behemoth. For pics of what
this pretty useless performance beast looked like
.

Because no knob setting was calibrated, there were timing markers that you could display in order to
get an idea of the sweep speed. Mine was better condition than the one on the link - there was a front
cover that housed probes (ie bits of rubber covered wire with croc clips) and a cathode follower
probe.

I have absolutely no idea what I did with mine - probably put it in the classified of the local
newspaper.

Craig