Date   
Old Tektronix Books

Daniel Koller
 

Hi Folks,
  The recent conversation about 500 series scopes prompted Dennis to recommend two books, 
      "Oscilloscopes: Collecting and Restoring a Classic"; ISBN-13: 9780963307156; Publisher: Stanley A. Griffiths; Publication date: 01/28/1992;
      "Typical Oscilloscope Circuitry", (C) 1961, 1962, Tektronix, Inc., S. W. Millikan Way, P.O. Box 500, Beaverton, Oregon.

It occurred to me that though I have not *needed* those books to repair my scopes in the past it sure would be nice to have a better Idea on how the circuits work, and to be able to learn more about the scopes in general, so I looked them up.
  YESTERDAY, I was able to find a couple copies of Stan's book on Amazon, used, for about $22.  If I still have the website up at home and it has not refreshed, I'll get a screen grab for proof, but there were one or two copies available from at least two sources, through Amazon.   But TODAY, the least expensive copy is $94.09!!    So, it seems likely to me that this very discussion, within out closed group, prompted someone to buy a book or two, and those actions drove up the perceived demand on a limited resource to raise the price significantly.  
  Question:  Did anyone here, reading those messages yesterday go ahead and buy Stan's book on line?  What was your price and through whom did you make the purchase?   I sure HOPE that someone here bought the book.  Otherwise, I have a more nefarious theory;  The bots are actively scanning our conversations to manipulate the prices of things on line.   That is not a pleasant concept.
    I found a copy through Moe's books for $28 and bought it.   Let's see how the price changes tomorrow.
   As for the Tek book, "Typical Oscilloscope Circuitry", also found 3 copies in good condition for under $20 and bought one.   We'll see what happens to that as well.
  I just figured I'd throw this out there as an FYI / buyer beware sort of thing.   Meanwhile, I am looking forward to some fun technical reading!
Dan

Re: I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

Dave Seiter
 

What a mess!  Revised

On Friday, March 29, 2019, 9:29:19 AM PDT, Dave Seiter <d.seiter@...> wrote:

Ok, I wasn't going to add my list, but it's been a while since took a survey.  These are just the 500 series items and the 575s (because they look similar and are tube-based).  Many of the plugins have duplicates and some mods, but I didn't track them.  The Cordin plugins (ex-SRI) appear to be part of a manifold system for high speed camera triggers.  Cordin has no record of them (or didn't want to look); at least one other similar model exists/existed.
SCOPES502        (first scope, later first Tekscopes project, still unfinished!)511A     (clean, HV section overheated/melted)514AD   (clean, HV section dead)519        (untested, old version with non Au-plated connectors)519        (untested, wrong camera mount, no bezel)519        (untested)535A      (very weathered, parts only)
541        (condition unknown)545        (working)547        (working)547        (working)549        (condition unknown)551 + PS (not working)555 + PS + cable (not working)
R502       (working)RM35A    (working)RM547    (working)

PLUGINS
Type 1A1Type 1A4Type 1A6Type 1A7Type 1A7AType 1L5Type 1L20Type 1S1
Type 53/54 CType 53/54 CAType 53/54 GType BType CAType GType HType KType LType MType ML (mil version of L)Type OType QType RType WType ZOne of the cal plugins, but not on my lists.
Non-Tek PluginsCordin 30-034A PIN oscillographCordin 30-135A PIN oscillographNelson Ross 011 specan 0-20KHzNelson Ross 012 specan 0-100KHzNelson Ross 013 specan 0-500KHzNelson Ross 311 specan 0-300MHz

MiscA few scopemobiles, including one for the 519Home made extender for plugins575 (Fetrons)575 (Mod 122C)
-Dave 





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Re: I wonder if there is much interest in vacuum tube oscilloscopes such...


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Re: I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

Dave Seiter
 

Yahoo apparently hates line returns!

What a mess! Revised

Ok, I wasn't going to add my list, but it's been a while since took a survey. These are just the 500 series items and the 575s (because they look similar and are tube-based). Many of the plugins have duplicates and some mods, but I didn't track them. The Cordin plugins (ex-SRI) appear to be part of a manifold system for high speed camera triggers. Cordin has no record of them (or didn't want to look); at least one other similar model exists/existed.

SCOPES
502 (first scope, later first Tekscopes project, still unfinished!)
511A (clean, HV section overheated/melted)
514AD (clean, HV section dead)
519 (untested, old version with non Au-plated connectors)
519 (untested, wrong camera mount, no bezel)
519 (untested)
535A (very weathered, parts only)
541 (condition unknown)
545 (working)
547 (working)
547 (working)
549 (condition unknown)
551 + PS (not working)
555 + PS + cable (not working)
R502 (working)
RM35A (working)
RM547 (working)

PLUGINS
Type 1A1
Type 1A4
Type 1A6
Type 1A7
Type 1A7A
Type 1L5
Type 1L20
Type 1S1
Type 53/54 C
Type 53/54 CA
Type 53/54 G
Type B
Type CA
Type G
Type H
Type K
Type L
Type M
Type ML (mil version of L)
Type O
Type Q
Type R
Type W
Type Z
One of the cal plugins, but not on my lists.

Non-Tek Plugins
Cordin 30-034A PIN oscillograph
Cordin 30-135A PIN oscillograph
Nelson Ross 011 specan 0-20KHz
Nelson Ross 012 specan 0-100KHz
Nelson Ross 013 specan 0-500KHz
Nelson Ross 311 specan 0-300MHz

Misc
A few scopemobiles, including one for the 519
Home made extender for plugins
575 (Fetrons)
575 (Mod 122C)

-Dave

Re: CG551AP - has anyone seen this problem before?

 

Progress!

Replaced F114 fuse on the power board, and now I get errors 51, 52, 85, 87

Looking at the nominal 1V DC output it is 2.7kHz 1Vpp sine wave centred on
+1V.

I've seen this before! See:
<https://groups.io/g/TekScopes/topic/7657614#131075>

Hmmm I can replace C1002 and C1003 again but I don't think this attacks the
root cause.

Any thoughts are welcome.

David

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of David C.
Partridge
Sent: 29 March 2019 14:01
To: TekScopes@groups.io; TekScopes2@groups.io
Subject: Re: [TekScopes] CG551AP - has anyone seen this problem before?

Well I hunted flaky tantalums and found no obvious ones. After re-assembly
and re-seating ROMs on CPU board, I'm now seeing the following error codes:

51, 52, 53, 54, 55 (Both Low SAC and High SAC)
56, 57 (Current mode)
81, 82, 83, 84, 85, 86, 87, 88 (All edge mode errors!)

Which is a step forward in one sense, but about 15 steps backward!

Suggestions most welcome!

Thanks
David


-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of David C.
Partridge
Sent: 29 March 2019 12:52
To: TekScopes; TekScopes2@groups.io
Subject: [TekScopes] CG551AP - has anyone seen this problem before?

I turned on my CG551AP yesterday. It flashed up the SELF TEST message in
normal brightness, then the display blanked and the only sign of life was
the LEDs just above the trigger output BNC which were dimly illuminated.

Has anyone seen this behaviour before? If so what was the problem?

I'm guessing a shorted tantalum capacitor :( ...

David

Re: I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

 

Hi Dave,
Stan brings up the issue of the outrageous prices used book sellers are asking for 2nd hand copies of his book whenever someone makes the mistake of asking if he has any copies left. He is stuck in a catch 22 situation. He would love to reprint it to get even with the used book stores but it took him over 10 years to sell the first printing. The last time I asked him about it he was resigned to the situation and not interested in doing anything about it.

The sad reality today is that it doesn't pay to print a book these days when someone is virtually certain to rip it off and scan it overnight. I sympathize since I often thought about writing a book on the 7000 Series.

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Dave Seiter
Sent: Friday, March 29, 2019 9:42 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] I wonder if there is much interest in vacuum
tube oscilloscopes such as the 500 series

Thanks, Dennis-
That was my understanding as well, which was why I was surprised
regarding the misconception that he was publishing his book again.
-Dave
On Friday, March 29, 2019, 7:45:48 AM PDT, Dennis Tillman W7PF
<@Dennis_Tillman_W7PF> wrote:

Hi Dave,
Stan is old. Stan has survived 2 or 3 bouts with cancer, a stroke, and
the recent loss of Pat, his spouse. So he doesn't have the energy he
used to. He does come to swapmeets where he sets up a table like he
always did. I visited him a few times last summer and fall. He is
getting frail but we went into his ham shack and puttered around for a
while looking for some things Pete Lancashire wanted.

Dennis Tillman W7PF

-----Original Message-----
From: Dave Seiter
Sent: Friday, March 29, 2019 1:33 AM

I haven't heard about Stan in a long time; he used to post quite a
lot. I think he had a few webcams, but they went dark long ago.
-Dave



--
Dennis Tillman W7PF
TekScopes Moderator





--
Dennis Tillman W7PF
TekScopes Moderator

Re: Old Tektronix Books

 

Daniel,
Good for you!

It is my impression from watching scarce items like this that there are many companies that will advertise an item at an outrageous price even if they don't have it. They rely on finding some other company that claims to have it and then if you meet the price that justifies them actually hunting down a real copy the will do that and pocket the difference.

The reality is that all there needs to be is one copy and these companies make it appear that there may be more than one copy or even many. Daniel discovered that in the case of Stan's book there was only one copy. Now the price has jumped back into the stratosphere where it usually is.

I suspect there isn't more than one (or two at the most) of the Typical Oscilloscope Circuitry books either and now that Daniel bought one of them I think the price will skyrocket like Stan's book did.

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Daniel Koller via Groups.Io
Sent: Friday, March 29, 2019 9:45 AM
To: TekScopes <tekscopes@groups.io>
Subject: [TekScopes] Old Tektronix Books

Hi Folks,
The recent conversation about 500 series scopes prompted Dennis to
recommend two books,
"Oscilloscopes: Collecting and Restoring a Classic"; ISBN-13:
9780963307156; Publisher: Stanley A. Griffiths; Publication date:
01/28/1992;
"Typical Oscilloscope Circuitry", (C) 1961, 1962, Tektronix,
Inc., S. W. Millikan Way, P.O. Box 500, Beaverton, Oregon.

It occurred to me that though I have not *needed* those books to
repair my scopes in the past it sure would be nice to have a better
Idea on how the circuits work, and to be able to learn more about the
scopes in general, so I looked them up.
YESTERDAY, I was able to find a couple copies of Stan's book on
Amazon, used, for about $22. If I still have the website up at home
and it has not refreshed, I'll get a screen grab for proof, but there
were one or two copies available from at least two sources, through
Amazon. But TODAY, the least expensive copy is $94.09!! So, it
seems likely to me that this very discussion, within out closed group,
prompted someone to buy a book or two, and those actions drove up the
perceived demand on a limited resource to raise the price
significantly.
Question: Did anyone here, reading those messages yesterday go
ahead and buy Stan's book on line? What was your price and through
whom did you make the purchase? I sure HOPE that someone here bought
the book. Otherwise, I have a more nefarious theory; The bots are
actively scanning our conversations to manipulate the prices of things
on line. That is not a pleasant concept.
I found a copy through Moe's books for $28 and bought it. Let's
see how the price changes tomorrow.
As for the Tek book, "Typical Oscilloscope Circuitry", also found 3
copies in good condition for under $20 and bought one. We'll see
what happens to that as well.
I just figured I'd throw this out there as an FYI / buyer beware
sort of thing. Meanwhile, I am looking forward to some fun technical
reading!
Dan




--
Dennis Tillman W7PF
TekScopes Moderator

Re: I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

Shirley Dulcey KE1L
 

That's the beauty of print on demand. If people buy the book you make
money, though less than with a conventional print run because the cost
per copy is a bit higher. If nobody buys the book you're out next to
no cash, though you did uselessly spend time preparing your book for a
PoD release. If your primary goal is to get your book out into the
world at a reasonable price for readers, it's a good option. That's
especially true for a reissue of an older book because the time spent
writing it is already gone; you're not up against the prospect of
spending a lot of time writing something and then not getting paid for
it.

The two big players in low cost PoD publishing are Lulu.com and
Amazon's Kindle Direct Publishing. (KDP also does ebook publishing, as
you might guess from the name. Amazon's former fully owned company,
CreateSpace, was merged into KDP a couple of years ago.) Both will let
you create books with zero up-front cost, though they also offer
optional services that cost money. (A third company, iUniverse,
started that way but later pivoted into being a more traditional
vanity press, aside from doing its business online.) The zero cost
option ONLY gets you printing; you're on your own for editing,
designing a cover, preparing your book for publication, promotion, and
getting bookstores and event dealers to carry your book. You can sell
your book at their base publishing cost, in which case you make
nothing on sales, or you can set a higher price and receive a portion
of the difference between the base cost and the selling price.

One complication with reprinting old books is that the author may not
own the rights. If the book was published by a conventional publisher,
that company or its successor may own some or all of the future
publication rights. If the company is defunct it can get complicated
to untangle who actually owns the rights to the book now; they could
belong to some person or company that bought pieces of the former
publisher's intellectual property, or they may have never been bought
by anybody and be in legal limbo.

On Fri, Mar 29, 2019 at 3:56 PM Dennis Tillman W7PF <@Dennis_Tillman_W7PF> wrote:

Hi Dave,
Stan brings up the issue of the outrageous prices used book sellers are asking for 2nd hand copies of his book whenever someone makes the mistake of asking if he has any copies left. He is stuck in a catch 22 situation. He would love to reprint it to get even with the used book stores but it took him over 10 years to sell the first printing. The last time I asked him about it he was resigned to the situation and not interested in doing anything about it.

The sad reality today is that it doesn't pay to print a book these days when someone is virtually certain to rip it off and scan it overnight. I sympathize since I often thought about writing a book on the 7000 Series.

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Dave Seiter
Sent: Friday, March 29, 2019 9:42 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] I wonder if there is much interest in vacuum
tube oscilloscopes such as the 500 series

Thanks, Dennis-
That was my understanding as well, which was why I was surprised
regarding the misconception that he was publishing his book again.
-Dave
On Friday, March 29, 2019, 7:45:48 AM PDT, Dennis Tillman W7PF
<@Dennis_Tillman_W7PF> wrote:

Hi Dave,
Stan is old. Stan has survived 2 or 3 bouts with cancer, a stroke, and
the recent loss of Pat, his spouse. So he doesn't have the energy he
used to. He does come to swapmeets where he sets up a table like he
always did. I visited him a few times last summer and fall. He is
getting frail but we went into his ham shack and puttered around for a
while looking for some things Pete Lancashire wanted.

Dennis Tillman W7PF

-----Original Message-----
From: Dave Seiter
Sent: Friday, March 29, 2019 1:33 AM

I haven't heard about Stan in a long time; he used to post quite a
lot. I think he had a few webcams, but they went dark long ago.
-Dave



--
Dennis Tillman W7PF
TekScopes Moderator





--
Dennis Tillman W7PF
TekScopes Moderator


Re: I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

Dave Seiter
 

Same for musicians; I've heard that the only way they really make money these days is through t-shirt, etc sales.  
-Dave

On Friday, March 29, 2019, 12:56:12 PM PDT, Dennis Tillman W7PF <@Dennis_Tillman_W7PF> wrote:

Hi Dave,
Stan brings up the issue of the outrageous prices used book sellers are asking for 2nd hand copies of his book whenever someone makes the mistake of asking if he has any copies left. He is stuck in a catch 22 situation. He would love to reprint it to get even with the used book stores but it took him over 10 years to sell the first printing. The last time I asked him about it he was resigned to the situation and not interested in doing anything about it.

The sad reality today is that it doesn't pay to print a book these days when someone is virtually certain to rip it off and scan it overnight. I sympathize since I often thought about writing a book on the 7000 Series.

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Dave Seiter
Sent: Friday, March 29, 2019 9:42 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] I wonder if there is much interest in vacuum
tube oscilloscopes such as the 500 series

  Thanks, Dennis-
That was my understanding as well, which was why I was surprised
regarding the misconception that he was publishing his book again.
-Dave
    On Friday, March 29, 2019, 7:45:48 AM PDT, Dennis Tillman W7PF
<@Dennis_Tillman_W7PF> wrote:

  Hi Dave,
Stan is old. Stan has survived 2 or 3 bouts with cancer, a stroke, and
the recent loss of Pat, his spouse. So he doesn't have the energy he
used to. He does come to swapmeets where he sets up a table like he
always did. I visited him a few times last summer and fall. He is
getting frail but we went into his ham shack and puttered around for a
while looking for some things Pete Lancashire wanted.

Dennis Tillman W7PF

-----Original Message-----
From: Dave Seiter
Sent: Friday, March 29, 2019 1:33 AM

  I haven't heard about Stan in a long time; he used to post quite a
lot.  I think he had a few webcams, but they went dark long ago.
-Dave



--
Dennis Tillman W7PF
TekScopes Moderator





--
Dennis Tillman W7PF
TekScopes Moderator

Re: "Oscilloscopes: Collecting and Restoring a Classic";

Michael A. Terrell
 

There are print to order services, like http://www.lulu.com

On Thu, Mar 28, 2019 at 10:23 PM Dave Brown <davebr@...>
wrote:

Stan donated the rights to reproduce his book to the vintageTEK museum. We
sell a CD copy of it on on the museum eBay store. Stan is not reproducing
his book that we are aware of. The museum is in the process of looking into
printing more soft copies.

Dave



Re: Old Tektronix Books

Bill Fenech
 

Dan,

I purchase both online this AM through AbeBooks:

Oscilloscopes: Selecting and Restoring a Classic - $31 plus $4 shipping

Typical Oscilloscope Circuitry. Revised Edition - $19.75 including
shipping


Bill AI6JZ



Oscilloscopes: Selecting and Restoring a Classic

On Fri, Mar 29, 2019 at 1:05 PM Dennis Tillman W7PF <@Dennis_Tillman_W7PF>
wrote:

Daniel,
Good for you!

It is my impression from watching scarce items like this that there are
many companies that will advertise an item at an outrageous price even if
they don't have it. They rely on finding some other company that claims to
have it and then if you meet the price that justifies them actually hunting
down a real copy the will do that and pocket the difference.

The reality is that all there needs to be is one copy and these companies
make it appear that there may be more than one copy or even many. Daniel
discovered that in the case of Stan's book there was only one copy. Now the
price has jumped back into the stratosphere where it usually is.

I suspect there isn't more than one (or two at the most) of the Typical
Oscilloscope Circuitry books either and now that Daniel bought one of them
I think the price will skyrocket like Stan's book did.

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of
Daniel Koller via Groups.Io
Sent: Friday, March 29, 2019 9:45 AM
To: TekScopes <tekscopes@groups.io>
Subject: [TekScopes] Old Tektronix Books

Hi Folks,
The recent conversation about 500 series scopes prompted Dennis to
recommend two books,
"Oscilloscopes: Collecting and Restoring a Classic"; ISBN-13:
9780963307156; Publisher: Stanley A. Griffiths; Publication date:
01/28/1992;
"Typical Oscilloscope Circuitry", (C) 1961, 1962, Tektronix,
Inc., S. W. Millikan Way, P.O. Box 500, Beaverton, Oregon.

It occurred to me that though I have not *needed* those books to
repair my scopes in the past it sure would be nice to have a better
Idea on how the circuits work, and to be able to learn more about the
scopes in general, so I looked them up.
YESTERDAY, I was able to find a couple copies of Stan's book on
Amazon, used, for about $22. If I still have the website up at home
and it has not refreshed, I'll get a screen grab for proof, but there
were one or two copies available from at least two sources, through
Amazon. But TODAY, the least expensive copy is $94.09!! So, it
seems likely to me that this very discussion, within out closed group,
prompted someone to buy a book or two, and those actions drove up the
perceived demand on a limited resource to raise the price
significantly.
Question: Did anyone here, reading those messages yesterday go
ahead and buy Stan's book on line? What was your price and through
whom did you make the purchase? I sure HOPE that someone here bought
the book. Otherwise, I have a more nefarious theory; The bots are
actively scanning our conversations to manipulate the prices of things
on line. That is not a pleasant concept.
I found a copy through Moe's books for $28 and bought it. Let's
see how the price changes tomorrow.
As for the Tek book, "Typical Oscilloscope Circuitry", also found 3
copies in good condition for under $20 and bought one. We'll see
what happens to that as well.
I just figured I'd throw this out there as an FYI / buyer beware
sort of thing. Meanwhile, I am looking forward to some fun technical
reading!
Dan




--
Dennis Tillman W7PF
TekScopes Moderator



Re: I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

Chuck Harris
 

Looking at the copyrights and acknowledgements, Stan vanity
pressed his book, using Tamara Wade, Specialty Binding in
Washougal, Washington. He owns the copyright for the finished
work.

If I were a betting man (I'm not), I would bet that Tamara Wade
is/was in someway connected with Tektronix's print shop.

If he still has the galleys (proofs), or can get them, he could
POD very easily.


-Chuck Harris

Shirley Dulcey KE1L wrote:

That's the beauty of print on demand. If people buy the book you make
money, though less than with a conventional print run because the cost
per copy is a bit higher. If nobody buys the book you're out next to
no cash, though you did uselessly spend time preparing your book for a
PoD release. If your primary goal is to get your book out into the
world at a reasonable price for readers, it's a good option. That's
especially true for a reissue of an older book because the time spent
writing it is already gone; you're not up against the prospect of
spending a lot of time writing something and then not getting paid for
it.

The two big players in low cost PoD publishing are Lulu.com and
Amazon's Kindle Direct Publishing. (KDP also does ebook publishing, as
you might guess from the name. Amazon's former fully owned company,
CreateSpace, was merged into KDP a couple of years ago.) Both will let
you create books with zero up-front cost, though they also offer
optional services that cost money. (A third company, iUniverse,
started that way but later pivoted into being a more traditional
vanity press, aside from doing its business online.) The zero cost
option ONLY gets you printing; you're on your own for editing,
designing a cover, preparing your book for publication, promotion, and
getting bookstores and event dealers to carry your book. You can sell
your book at their base publishing cost, in which case you make
nothing on sales, or you can set a higher price and receive a portion
of the difference between the base cost and the selling price.

One complication with reprinting old books is that the author may not
own the rights. If the book was published by a conventional publisher,
that company or its successor may own some or all of the future
publication rights. If the company is defunct it can get complicated
to untangle who actually owns the rights to the book now; they could
belong to some person or company that bought pieces of the former
publisher's intellectual property, or they may have never been bought
by anybody and be in legal limbo.

Re: Old Tektronix Books

Daniel Koller
 

Aha!  Bill, you're the culprit!   ;)
I did the same - you got there first.   The $31 "Oscilloscopes" (was $28 something when I looked) was NOT available.  GlassFrogBooks (via Abe's Books) came back and said they did not have the copy and requested $10 more to find another copy.  We will see if they can find it for $38!!   I won't go higher than that because I won't believe they can find a copy.
As for the "Typical circuits book"   There were three, one at $15, one at $17 and one at $19.   I ordered the $17 one.    I hope I get it.
Dennis, yes, what you said is right.   I've noticed that with goods sometimes - There is only one item out there, or was, as some retailer some place, but other aggregator or sale websites pretend to have is at the same price.  Sometimes it's obvious and you can tell who the original retailer is (particularly if the photos are identical).  Sometimes it's not so simple.   Such aggregator websites are infuriating because they provide no new benefit, no new information to anyone.  They are just there to scam and make money for the operator.  
Dan

On Friday, March 29, 2019, 4:55:41 PM EDT, Bill Fenech <wfenech@...> wrote:

Dan,

I purchase both online this AM through AbeBooks:

Oscilloscopes: Selecting and Restoring a Classic  -  $31 plus $4 shipping

Typical Oscilloscope Circuitry. Revised Edition  -  $19.75 including
shipping


Bill  AI6JZ

Re: Old Tektronix Books

John Williams
 

Good sleuthing. If you want a laugh take a look at the price on The Cathode Ray Tube by Peter Keller. If I hadn’t retired years ago I could sell the three books and retire in style. Apparently. Lol

Re: Old Tektronix Books

Bill Fenech
 

Slight revision to my previous email....one book is marked as received and
confirmed while the other has not confirmed yet
(though have been charged for both).

Dan - FYI I ordered both books after I saw your email this morning. :) I
was only partially up to speed on the other thread at the time.

Cheers
Bill AI6JZ

On Fri, Mar 29, 2019 at 2:16 PM Daniel Koller via Groups.Io <kaboomdk=
yahoo.com@groups.io> wrote:

Aha! Bill, you're the culprit! ;)
I did the same - you got there first. The $31 "Oscilloscopes" (was $28
something when I looked) was NOT available. GlassFrogBooks (via Abe's
Books) came back and said they did not have the copy and requested $10 more
to find another copy. We will see if they can find it for $38!! I won't
go higher than that because I won't believe they can find a copy.
As for the "Typical circuits book" There were three, one at $15, one at
$17 and one at $19. I ordered the $17 one. I hope I get it.
Dennis, yes, what you said is right. I've noticed that with goods
sometimes - There is only one item out there, or was, as some retailer some
place, but other aggregator or sale websites pretend to have is at the same
price. Sometimes it's obvious and you can tell who the original retailer
is (particularly if the photos are identical). Sometimes it's not so
simple. Such aggregator websites are infuriating because they provide no
new benefit, no new information to anyone. They are just there to scam and
make money for the operator.
Dan
On Friday, March 29, 2019, 4:55:41 PM EDT, Bill Fenech <
wfenech@...> wrote:

Dan,

I purchase both online this AM through AbeBooks:

Oscilloscopes: Selecting and Restoring a Classic - $31 plus $4 shipping

Typical Oscilloscope Circuitry. Revised Edition - $19.75 including
shipping


Bill AI6JZ






Re: Old Tektronix Books

Adrian
 

I might be a culprit too just got the only copy of “oscilloscopes” I could see on Ebay which from the photo was the same one that was listed on Amazon and a couple of other sellers google found. I already have a copy of Stan’s book

Adrian
Sent from an I-thingy

On 29 Mar 2019, at 21:21, Bill Fenech <wfenech@...> wrote:

Slight revision to my previous email....one book is marked as received and
confirmed while the other has not confirmed yet
(though have been charged for both).

Dan - FYI I ordered both books after I saw your email this morning. :) I
was only partially up to speed on the other thread at the time.

Cheers
Bill AI6JZ

On Fri, Mar 29, 2019 at 2:16 PM Daniel Koller via Groups.Io <kaboomdk=
yahoo.com@groups.io> wrote:

Aha! Bill, you're the culprit! ;)
I did the same - you got there first. The $31 "Oscilloscopes" (was $28
something when I looked) was NOT available. GlassFrogBooks (via Abe's
Books) came back and said they did not have the copy and requested $10 more
to find another copy. We will see if they can find it for $38!! I won't
go higher than that because I won't believe they can find a copy.
As for the "Typical circuits book" There were three, one at $15, one at
$17 and one at $19. I ordered the $17 one. I hope I get it.
Dennis, yes, what you said is right. I've noticed that with goods
sometimes - There is only one item out there, or was, as some retailer some
place, but other aggregator or sale websites pretend to have is at the same
price. Sometimes it's obvious and you can tell who the original retailer
is (particularly if the photos are identical). Sometimes it's not so
simple. Such aggregator websites are infuriating because they provide no
new benefit, no new information to anyone. They are just there to scam and
make money for the operator.
Dan
On Friday, March 29, 2019, 4:55:41 PM EDT, Bill Fenech <
wfenech@...> wrote:

Dan,

I purchase both online this AM through AbeBooks:

Oscilloscopes: Selecting and Restoring a Classic - $31 plus $4 shipping

Typical Oscilloscope Circuitry. Revised Edition - $19.75 including
shipping


Bill AI6JZ







Re: Old Tektronix Books

Daniel Koller
 

YESTERDAY.  PM some time.

TODAY, after a couple of us bought books, and all I did was refresh the screen:


Amazon:  liars, cheaters,... statisticians!!
  Dan
p.s.  Let's see who actually receive the books they ordered.  Three or more of us requested them.   Until one of us actually receives a book, we have to assume there are *none* out there.   Once one of two of us get books, we can then *know* there are none out there!

On Friday, March 29, 2019, 5:39:03 PM EDT, Adrian <Adrian@...> wrote:

I might be a culprit too just got the only copy of “oscilloscopes”  I could see on Ebay which from the photo was the same one that was listed on Amazon and a couple of other sellers google found. I already have a copy of Stan’s book

Adrian
Sent from an I-thingy

On 29 Mar 2019, at 21:21, Bill Fenech <wfenech@...> wrote:

Slight revision to my previous email....one book is marked as received and
confirmed while the other has not confirmed yet
(though have been charged for both).

Dan - FYI I ordered both books after I saw your email this morning.  :)  I
was only partially up to speed on the other thread at the time.

Cheers
Bill  AI6JZ

On Fri, Mar 29, 2019 at 2:16 PM Daniel Koller via Groups.Io <kaboomdk=
yahoo.com@groups.io> wrote:

Aha!  Bill, you're the culprit!  ;)
I did the same - you got there first.  The $31 "Oscilloscopes" (was $28
something when I looked) was NOT available.  GlassFrogBooks (via Abe's
Books) came back and said they did not have the copy and requested $10 more
to find another copy.  We will see if they can find it for $38!!  I won't
go higher than that because I won't believe they can find a copy.
As for the "Typical circuits book"  There were three, one at $15, one at
$17 and one at $19.  I ordered the $17 one.    I hope I get it.
Dennis, yes, what you said is right.  I've noticed that with goods
sometimes - There is only one item out there, or was, as some retailer some
place, but other aggregator or sale websites pretend to have is at the same
price.  Sometimes it's obvious and you can tell who the original retailer
is (particularly if the photos are identical).  Sometimes it's not so
simple.  Such aggregator websites are infuriating because they provide no
new benefit, no new information to anyone.  They are just there to scam and
make money for the operator.
Dan
    On Friday, March 29, 2019, 4:55:41 PM EDT, Bill Fenech <
wfenech@...> wrote:

Dan,

I purchase both online this AM through AbeBooks:

Oscilloscopes: Selecting and Restoring a Classic  -  $31 plus $4 shipping

Typical Oscilloscope Circuitry. Revised Edition  -  $19.75 including
shipping


Bill  AI6JZ







Stan Griffiths - Re: [TekScopes] I wonder if there is much interest in vacuum tube oscilloscopes such as the 500 series

toby@...
 

On 2019-03-29 4:59 PM, Chuck Harris wrote:
Looking at the copyrights and acknowledgements, Stan vanity
pressed his book,

Hate to repeat myself but I'm worried far less about the book, which is
certain to survive, in print, and somebody will soon enough digitise it;
and more about his 1000 scopes and everything else he's collected.

Somebody should probably try to find out if he has made provision for
it. Donation to TEKmuseum? Do they even have space or funds for transport?

--Toby

Re: 11801 question

Albert Otten
 

Hi Reg,

I did similar with a CSA803A. This scope has the slower Calibrator, about 120 ps rise time.
First I tested an SD-22 with the cal signal. 20 ps/div and 10 mV/div, which gives a reasonable steep mid part of the trace. About the 50% point centered at the grids center. During more than half an hour from startup I could not detect any shift in the trace.
Next I followed your splitter setup, with an SD-20 and an SD-26. In Enhanced Accuracy I set the SD-20 as delay reference and had the SD-26 delay calibrated to this. Displayed 20 ps/div and 5 mV/div. Made the mid region of the traces coincide by a small fine adjustment of Vertical Position of one of the traces. Again I saw no systematic shift of one trace w.r.t. the other. However there 2 occasions (which I noticed) where there was a short duration shift (more or less jumping) of one of the traces over 2-3 ps. That could jst as well be a shift vertically of course. I attributed this to a not firm enough cable connection somewhere since the trace returned nicely to the proper position. Not sure though.
Altogether I can't share your "pessimism" about the performance.

Albert

On Thu, Mar 28, 2019 at 12:52 AM, Reginald Beardsley wrote:


I've got the unit running with a pair of SD-22s fed by a 2 port splitter from
the calibrator into ports 5 & 7. I was finally able to figure out how to
manually adjust the skew so the two traces overlaid. The cables are about 1/2
mm different lengths

I'm seeing the displacement between the two traces vary from 0 to about 10 ps
over the course of a few minutes. Is this normal or is there a fault? I've
read the user manual once, but it's not great. Certainly no match for a 465
or 485 manual.

Does anyone know why this is happening? I've got the internal clock output
connected to an HP 8356A and I can see the period varying. I don't have the
8356A connected to a GPSDO at the moment, but it has the OXCO option and is
very stable.

Is there any reason to think that replacing the 200 MHz master oscillator with
one of Leo Bodnar's GPSDOs would eliminate the interchannel drift?

I discovered this shortly after making an offer for four SD-26 heads. My
intended use is to measure actual FPGA word skew of a DSP stream, so this
would be a serious problem.

Thanks,
Reg

Re: Tek transformer 120-0866-02

Jerry
 

I guess there isn't a PM on this board. You can send an email to clist at handler dot com. But take the 'd' out of handler. Maybe that will keep the skimmers at bay.

Jerry

Tek 11302 wanted for an HP 8568 trade

Jerry
 

I have a burning need for a Tek 11302. I have one, played around with it quite a bit but was never able to figure out what is wrong with it. The basic problem was that every time I booted it up, I had to tune the display as it was out of focus. The focus system wouldn't work enough and I had to mess with the trim pots but even then it wouldn't stick. I have the calibration software and messed around with it but you need a lot of special modules to calibrate the scope. I've been thinking lately that it probably has an NVRam or something that is bad or a battery, but it's only been about 9 months since I took a crack at it and I'm sure I looked for a battery as well as an NVRam back then. My memory just isn't there anymore. I also checked all the voltages, caps, etc, and just never got anywhere. For a while it seemed like I was making progress but it just wouldn't trace correctly (in addition to the focus). So once I got it somewhat in focus, the signal trace seemed to not overlay on subsequent traces so I had a fatter trace horizontally than expected.

Anyway, I have an 8568A that was upgraded to a B. I think they upgraded it as an option at the factory if I remember correctly. It has the 75ohm BNC connector as well as the standard 50Ohm. I had been thinking about keeping it just for the 75 ohm connector. The display is serviceable and the unit works well overall. It has all the cables and I have the interposer I think that would connect to the HP 85585A preselector. I have an 85685A preselector on my other 8568B. I believe it was stored in a closet for a very long time. I remember it being very clean inside, much more than my other 8568B and the calibration constants are better as well. I bought it about 2yrs ago as a backup to my 8568B but since I also have an 8566, I figure it would be a good trade for a working 11302 if someone has one. I want an analog scope as I think they are easier to view modulation envelopes on and I also have a good selection of modules for one already.

So, if you are in the SF Bay Area and would like to trade a working 11302 scope for a pretty decent 8568B (labeled A but it is a B) Spectrum Analyzer, please drop a note to clist at handler dot com but take the 'd' out of handler so it becomes hanler. I get so much spam as it is. I'm not interested in any other trades for the analyzer (possible 11301) as I have quite a few scopes. I somehow fell in love with the 11302 I have and just wish I was able to get it working.

Thanks,

Jerry