Date   

Re: How to make a 500 series plug-in extender

Dave Seiter
 

I made an 500 series extender years ago. Both connectors came from a badly corroded 535 and it's plugin. The cable is about 3' long and unshielded, but it gets the job done for most uses.  I do have a genuine fixed extender somewhere, but I prefer having the ability to rotate the plugin.
-Dave

On Monday, September 28, 2020, 07:10:56 AM PDT, Grayson Evans <wa4gvm@gmail.com> wrote:

I don't suppose there are a bunch of plug-in extenders floating around, so looks like I need to build one. (I see one on ebay, but out of my price range)
If I can locate a source of the connectors, it should not be too hard to connect a male to female with short wires/coax.
Has anyone out there done this?  Those connectors look like a stock (in the 60's) amphanol connector, but I don't see any manuf. part number in the plug-in or scope parts list.  They were used in a lot of military gear.  Amphanol probably still makes it.
Thanks,
Grayson


Re: Soul searching = Lab Purge - shameless plug

stevenhorii
 

Jeff,
Good on you for donating/restoring electronics that can still be used.
From the Microscope Group, I donated a couple of microscopes to a
not-for-profit mycology research and study group. They are a 501(c)(3) so
they were able to provide a tax letter which was nice, but I would have
donated the scopes without the letter.

I do have stuff I would donate for your folks. Contact me off-list. I think
you have my e-mail address.

Also, for members of the group that may have old computer equipment -
particularly if it is really old, like analog computer stuff, old DEC, Data
General, and other minicomputers, mainframes (yes - they have a bunch of
pretty large machines) a museum called the Large Scale Systems Museum
located just outside of Pittsburgh accepts donations. If it is something
they can use, they will accept it. They are a 501(c)(3) registered
corporation and will provide tax letters. I have an EAI TR20 analog
computer that I have offered to them and they will likely make the trip out
to pick it up since I am in PA but near Philadelphia, not Pittsburgh. I
also have some ROLM military computers and some electromechanical ones (an
electromechanical computer from the F-111). They are interested in all of
it. You can imagine that this amounts to a lot of mass and takes up space I
sorely need.

Here's a link to their Web page:

https://www.mact.io/start

For anyone in the Pittsburgh area, it's well worth a visit. Oh, and most of
their systems are operational. If you are knowledgable about any of these
vintage machines (ever use a PDP-11 system?) they may even let you sit at a
terminal or the console so you can recall your previous computing
adventures. They also have the usual PC and Mac stuff, but early versions
of them (I think they have an original Apple 1). For the Tek folks, my
recollection is that our computer room which housed an IBM 7094 II and a
1401 also had a Tek scope on a cart that was kept in a back corner. I
believe it was one of the 500-series scopes, but I did not get a close up
look at it. I never saw it being used, but I was told the service people
would occasionally ask to use it. I don't know if the LSSC folks have a
scope like this, but it would go along with their mainframe exhibits.

Steve Horii



On Mon, Sep 28, 2020 at 11:58 AM Jeff Kruth via groups.io <kmec=
aol.com@groups.io> wrote:

Hello All! I know how it is: too good to throw away, dont need it anymore,
taking up space, dont want the family to have to deal with it, hate to
waste stuff that meant something to you at one time... In a shameless
attempt to help out my college, who I have donated a lot of stuff to
already, I would like to put forth the idea that we can provide a donation
letter for your "downsized" stuff.We are doing electronics in support of
space work, primarily satellite construction and space communications, as
well as raising up the next gen of engineers to take our places. We make
use of whatever we can get our hands on. I know transportation is an
issue, but we have found ways to deal with that on occasion. We have
received truckloads loads from Indiana, western KY, Baltimore, & Chicago in
the past. We are located in eastern Kentucky, right off I-64. I hate to see
waste, particularly if something can be reused-repurposed. I guess this
comes from having depression era parents. Look us up:
https://www.moreheadstate.edu/ssc/ I am the Staff EE and Professor, as
well as the mentor for the ham club here KY4SSC. We can use parts,
hardware, wire, Test equipment (broken or working, we fix stuff), microwave
widgets, ham gear, even WWII surplus, as I use some of the gear for "show &
tell". Thanks for the bandwidth. If you deliver, which some do as its a
nice trip to the wilds of KY, I will give you a "cooks tour" of what we do
here, its pretty cool! Regards,Jeff KruthWA3ZKRMSU- Space Science Center






Re: Soul searching = Lab Purge - shameless plug

Jeff Kruth
 

Hello All! I know how it is: too good to throw away, dont need it anymore, taking up space, dont want the family to have to deal with it, hate to waste stuff that meant something to you at one time... In a shameless attempt to help out my college, who I have donated a lot of stuff to already, I would like to put forth the idea that we can provide a donation letter for your "downsized" stuff.We are doing electronics in support of space work, primarily satellite construction and space communications, as well as raising up the next gen of engineers to take our places. We make use of whatever we can get our hands on.  I know transportation is an issue, but we have found ways to deal with that on occasion. We have received truckloads loads from Indiana, western KY, Baltimore, & Chicago in the past. We are located in eastern Kentucky, right off I-64. I hate to see waste, particularly if something can be reused-repurposed. I guess this comes from having depression era parents. Look us up: https://www.moreheadstate.edu/ssc/ I am the Staff EE and Professor, as well as the mentor for the ham club here KY4SSC. We can use parts, hardware, wire, Test equipment (broken or working, we fix stuff), microwave widgets, ham gear, even WWII surplus, as I use some of the gear for "show & tell". Thanks for the bandwidth.  If you deliver, which some do as its a nice trip to the wilds of KY, I will give you a "cooks tour" of what we do here, its pretty cool! Regards,Jeff KruthWA3ZKRMSU- Space Science Center


Re: How to make a 500 series plug-in extender

Andy Warner
 

Just realised you probably mean a 500 series 'scope, not a TM500.

Apologies for the noise.

On Mon, Sep 28, 2020 at 10:36 AM Andy Warner <andyw@pobox.com> wrote:

Here's the details of one I made recently:
https://groups.io/g/TekScopes/album?id=252147

On Mon, Sep 28, 2020 at 9:10 AM Grayson Evans <wa4gvm@gmail.com> wrote:

I don't suppose there are a bunch of plug-in extenders floating around,
so
looks like I need to build one. (I see one on ebay, but out of my price
range)
If I can locate a source of the connectors, it should not be too hard to
connect a male to female with short wires/coax.
Has anyone out there done this? Those connectors look like a stock (in
the 60's) amphanol connector, but I don't see any manuf. part number in
the
plug-in or scope parts list. They were used in a lot of military gear.
Amphanol probably still makes it.
Thanks,
Grayson





--
Andy





--
Andy


Re: How to make a 500 series plug-in extender

Andy Warner
 

Here's the details of one I made recently:
https://groups.io/g/TekScopes/album?id=252147

On Mon, Sep 28, 2020 at 9:10 AM Grayson Evans <wa4gvm@gmail.com> wrote:

I don't suppose there are a bunch of plug-in extenders floating around, so
looks like I need to build one. (I see one on ebay, but out of my price
range)
If I can locate a source of the connectors, it should not be too hard to
connect a male to female with short wires/coax.
Has anyone out there done this? Those connectors look like a stock (in
the 60's) amphanol connector, but I don't see any manuf. part number in the
plug-in or scope parts list. They were used in a lot of military gear.
Amphanol probably still makes it.
Thanks,
Grayson





--
Andy


Re: Soul searching = Lab Purge

Lawrance A. Schneider
 

On Sun, Sep 27, 2020 at 10:52 PM, snapdiode wrote:


unloading years of meaningless material cruft
Like what? And where do you live?

larry


Re: Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

Glydeck
 

On Sep 28, 2020, at 8:21 AM, David Holland <david.w.holland@gmail.com> wrote:

I thought the VintageTek museum reprinted his book. Are they out again?

(Appears so).... They do make a PDF available:

https://www.ebay.com/itm/Oscilloscopes-Selecting-and-Restoring-a-Classic-by-Stan-Griffiths-Tektronix/112676196038?hash=item1a3c064ec6:g:3MwAAOSwBjdaKCih

David

On Mon, Sep 28, 2020 at 10:53 AM Dave Daniel <kc0wjn@gmail.com> wrote:

Regrettably Stan has passed on.

There are second-hand copies of his book available but they are very, very
expensive (between $70 and $300).

DaveD

On Sep 28, 2020, at 10:37, Grayson Evans <wa4gvm@gmail.com> wrote:

Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I
think is way out of print. Fortunately I still have my copy and use it all
the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in
Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving
the scopes a high pressure wash, then a through dry in an oven he made out
of an old refrigerator. Guess it worked. I also traded him some 500
series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM












Re: Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

David Holland
 

I thought the VintageTek museum reprinted his book. Are they out again?

(Appears so).... They do make a PDF available:

https://www.ebay.com/itm/Oscilloscopes-Selecting-and-Restoring-a-Classic-by-Stan-Griffiths-Tektronix/112676196038?hash=item1a3c064ec6:g:3MwAAOSwBjdaKCih

David

On Mon, Sep 28, 2020 at 10:53 AM Dave Daniel <kc0wjn@gmail.com> wrote:

Regrettably Stan has passed on.

There are second-hand copies of his book available but they are very, very
expensive (between $70 and $300).

DaveD

On Sep 28, 2020, at 10:37, Grayson Evans <wa4gvm@gmail.com> wrote:

Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I
think is way out of print. Fortunately I still have my copy and use it all
the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in
Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving
the scopes a high pressure wash, then a through dry in an oven he made out
of an old refrigerator. Guess it worked. I also traded him some 500
series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM









Re: Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

Colin Herbert
 

Hi Grayson,
I'm afraid that Stan died earlier this year. This is what Dennis Tillman posted on 30/01/2020:

"I'm sorry to inform everyone that Stan Griffiths W7NI passed away Tuesday night at 00:30."

His obituary is here;
https://groups.io/g/TekScopes/files/Stan%20Griffiths%20Obituary

Colin.

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Grayson Evans
Sent: 28 September 2020 15:38
To: TekScopes@groups.io
Subject: [TekScopes] Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I think is way out of print. Fortunately I still have my copy and use it all the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving the scopes a high pressure wash, then a through dry in an oven he made out of an old refrigerator. Guess it worked. I also traded him some 500 series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM


Re: Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

Siggi
 

Hey Grayson,

I didn't know Stan, but here's a message in the archives about his death
and memorial: https://groups.io/g/TekScopes/message/164990.

Siggi

On Mon, Sep 28, 2020 at 10:37 AM Grayson Evans <wa4gvm@gmail.com> wrote:

Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I
think is way out of print. Fortunately I still have my copy and use it all
the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in
Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving
the scopes a high pressure wash, then a through dry in an oven he made out
of an old refrigerator. Guess it worked. I also traded him some 500
series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM






Re: Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

 

On 9/28/20 10:37 AM, Grayson Evans wrote:
Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I think is way out of print. Fortunately I still have my copy and use it all the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving the scopes a high pressure wash, then a through dry in an oven he made out of an old refrigerator. Guess it worked. I also traded him some 500 series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM




Re: Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

Dave Daniel
 

Regrettably Stan has passed on.

There are second-hand copies of his book available but they are very, very expensive (between $70 and $300).

DaveD

On Sep 28, 2020, at 10:37, Grayson Evans <wa4gvm@gmail.com> wrote:

Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I think is way out of print. Fortunately I still have my copy and use it all the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving the scopes a high pressure wash, then a through dry in an oven he made out of an old refrigerator. Guess it worked. I also traded him some 500 series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM





Anyone know what happened to Stan Griffiths (of Restoring a Classic fame)?

Grayson Evans
 

Stan wrote: Oscilloscopes: Selecting and Restoring a Classic, which I think is way out of print. Fortunately I still have my copy and use it all the time to ID Tek scopes and plug-ins. He was a Tek employee and lived in Beaverton, not far from me.
He restored my two 547's in the 90's. He was a firm believer in giving the scopes a high pressure wash, then a through dry in an oven he made out of an old refrigerator. Guess it worked. I also traded him some 500 series plug-ins.
Would love to reconnect if he is still alive.
Thanks,
Grayson, KJ7UM


How to make a 500 series plug-in extender

Grayson Evans
 

I don't suppose there are a bunch of plug-in extenders floating around, so looks like I need to build one. (I see one on ebay, but out of my price range)
If I can locate a source of the connectors, it should not be too hard to connect a male to female with short wires/coax.
Has anyone out there done this? Those connectors look like a stock (in the 60's) amphanol connector, but I don't see any manuf. part number in the plug-in or scope parts list. They were used in a lot of military gear. Amphanol probably still makes it.
Thanks,
Grayson


Re: Soul searching = Lab Purge

snapdiode
 

Life is short. I am also slowly unloading years of meaningless material cruft. It's a good thing.


Re: 2467BHD does xy-mode as single sweep event, continous display missing

Chuck Harris <cfharris@...>
 

X-Y mode should have been disabled in the 2467 MCP scopes, but
it wasn't, so they added a timer circuit board that integrates the
beam current and the sweep speed in some way, and decides when the
beam has to be shut off.

That circuit board is trying to save your scope from damage.

-Chuck Harris

Sscandizzo@comcast.net wrote:

Hi Guys,

Similarly, my 2467B is behaving in the exact same manner: in XY mode flashing the expected waveform briefly, then going blank. Is this, in fact, a form of screen protection. or something else?

Thanks,
Stefan






Re: 2467BHD does xy-mode as single sweep event, continous display missing

Stefan
 

Hi Guys,

Similarly, my 2467B is behaving in the exact same manner: in XY mode flashing the expected waveform briefly, then going blank. Is this, in fact, a form of screen protection. or something else?

Thanks,
Stefan


Re: 465B Horizontal Trace Issues - Help requested

Tom Lee
 

Thanks very much for creating that doc -- I'm sure it has helped and will help many!

-- Cheers,
Tom

--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu

On 9/27/2020 11:01, pdxareaid wrote:
In case it helps...several years ago, after dealing with a failed tantalum cap...I compiled info for the 465B to make the next one easy to find.
It is in the files section of this forum but here is a direct link. It is sortable by clicking column headers. Good luck.
https://groups.io/g/TekScopes/files/465Btants.html
ignore the email address in it. I lost editing rights in the yahoo->groupsio move.





Re: Shipping Scopes

Richard R. Pope
 

Dave,
I missed the Uber reference but you are correct. I will pickup the piece equipment from where it is located and than deliver it to the buyer. The buyer pays the seller and then the buyer and/or seller pays me half of the shipping which is based on mileage and then the other half is paid on delivery.
GOD Bless and Thanks,
rich!

On 9/23/2020 8:47 PM, Dave Seiter wrote:
It's like Uber for scopes! If I ever find a 570 and can't retrieve it myself, I'll keep you in mind!
-Dave
On Wednesday, September 23, 2020, 03:32:29 PM PDT, Richard R. Pope <mechanic_2@charter.net> wrote:
Hello all,
And this is why I offer a premium delivery service. Expensive but
the equipment is handled by just me. It will not be dropped, spindled,
nor mutilated and it is kept in a climate controlled environment. I
will pick up anywhere in the lower 48 and deliver to anywhere else in
the lower 48. Please contact off list for details?
GOD Bless Bless and Thanks,
rich!

On 9/23/2020 4:38 PM, John Williams wrote:
Good advice. Having shipped and received literally hundreds of tube scopes, there is always a few things overlooked. One that is ALWAYS overlooked is the crt. The crt in these old scopes is supported in only two places, that is the front panel and the rear socket. The front support is very rigid. The back support however is usually a white plastic ring that may be used to rotate the tube. Sadly this plastic is the kind that eventually hardens. It does not take much force to break it. Even time can cause it to fail. Now when the packed scope gets dropped by the carrier, and it WILL get dropped, the crt is unsupported and will usually break in half at the neck. All carriers use conveyor belts, and a package this size sometimes falls off the conveyor to the concrete floor. I have even seen the UPS driver, when picking up a box clearly marked fragile in 10 places actually THROW the box into his truck. CRTs are getting very hard to find, so if yours gets broken the whole scope may be junk.

I have also received scopes in their original Tektronix shipping box, unopened. There is no way this box could survive shipping conditions today. It always has to be packed inside another box.

I know of no easy answer to this. I have sometimes removed the crt and packed it separately in a proper Tektronix crt box. This is good but increases the cost. I have also received scopes with some packing material around the crt inside the mu-metal shield. As I recall this had limited success. Oh and btw no carrier will insure glass.

Any time you ship it is a crap shoot. All you can do is try to make sure your package can be dropped 6 feet onto concrete and you are ok. Maybe. Good luck.

I














Re: 465B Horizontal Trace Issues - Help requested

pdxareaid
 

In case it helps...several years ago, after dealing with a failed tantalum cap...I compiled info for the 465B to make the next one easy to find.
It is in the files section of this forum but here is a direct link. It is sortable by clicking column headers. Good luck.
https://groups.io/g/TekScopes/files/465Btants.html
ignore the email address in it. I lost editing rights in the yahoo->groupsio move.

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