Date   

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

Grayson Evans
 

Thanks John,
Looks to me like pins 1 and 3 and 4 and 5 would need to be small coax like you said (RG174 for example) even if the connecting length is only 2 ft. or so.
I looked at the cable on ebay. Very nice, good price, but seller doesnt say if all the pins are connected. It is unlikely that any are coax or shielded.
Thanks for the info.
Grayson


Re: Shipping Scopes

Tom Lee
 

A bit OT, but Compactrons in the IO-10?? I don't believe that Heathkit ever put Compactrons in a scope (but would be happy to be educated otherwise).

As for loose objects in a crt, that's never good. It's a shame that it was shipped so poorly.

--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 9/28/2020 16:17, Harvey White wrote:
When a CRT is built, it does not rattle.

When it does, embarrassing questions need to be asked.

Harvey


On 9/28/2020 6:51 PM, David Collier wrote:
Just received a Heathkit IO-10 from the USA via the Global Shipping Service.  It was loosely packed in a cardboard parcel and had clearly been dropped from waist height onto concrete!  Hence one large electrolytic had broken away from its paxolin base; all three large compactrons were half out of their sockets at the same angle, and the chassis was bent on one side. The CRT survived but has something loose inside, so may or may not work.
By contrast I drove 8 hours to safely pick up two TEK 545B's locally.
Sellers need education in packing these things properly.








Re: Shipping Scopes

Harvey White
 

When a CRT is built, it does not rattle.

When it does, embarrassing questions need to be asked.

Harvey

On 9/28/2020 6:51 PM, David Collier wrote:
Just received a Heathkit IO-10 from the USA via the Global Shipping Service. It was loosely packed in a cardboard parcel and had clearly been dropped from waist height onto concrete! Hence one large electrolytic had broken away from its paxolin base; all three large compactrons were half out of their sockets at the same angle, and the chassis was bent on one side. The CRT survived but has something loose inside, so may or may not work.
By contrast I drove 8 hours to safely pick up two TEK 545B's locally.
Sellers need education in packing these things properly.





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

Dave Brown
 

Stan gave the vintageTEK museum the rights to reproduce his book. No one outside of the family or the museum has the right to reproduce. We have the CD version on the eBay store. We are out of the print copy but will likely be ordering more soon.

Dave


Re: Shipping Scopes

John Williams
 

It is interesting to know that the Global Shipping has not fixed these problems. When this happened to Somme items I purchased I notified the seller and requested a refund. If they did not offer at least something, I put in a PayPal claim I hope you would do something similar.


Re: Shipping Scopes

 

Just received a Heathkit IO-10 from the USA via the Global Shipping Service. It was loosely packed in a cardboard parcel and had clearly been dropped from waist height onto concrete! Hence one large electrolytic had broken away from its paxolin base; all three large compactrons were half out of their sockets at the same angle, and the chassis was bent on one side. The CRT survived but has something loose inside, so may or may not work.
By contrast I drove 8 hours to safely pick up two TEK 545B's locally.
Sellers need education in packing these things properly.


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

John Williams
 

Actually I just found a really nice looking one.

https://www.ebay.com/itm/AMPHENOL16-Pin-26-159-16-Connector-26-190-16-Receptacle-w-cable/124285733386?hash=item1cf001ca0a:g:x6wAAOSwrjBfKeqs

For 25 bucks this is a great deal. If he would ship to Canada I would buy it myself. Alas, no joy.


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

John Williams
 

Grayson once you find connectors you are home free pretty much. There are lots on eBay at various prices. You can also order new ones but generally run megabucks. I just use hookup wire to make the cable and lots of tiny cable ties to take the strain of the wires on the connections. You have to be careful using them as the voltages are exposed. I have not bothered covering or potting them. You can use tiny coax for pins 1 and 3. These allow you to get the plugin out where you can work on it plus rotate it carefully while working on it.


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

greenboxmaven
 

The connectors on many Tektronix plug ins are Amphenol Blue Ribbon series. Be careful in ordering, while the actual contacts are the same, the connector bodies and locating pins have many variations.

Bruce Gentry, KA2IVY

On 9/28/20 1:48 PM, Grayson Evans wrote:
Yes, I forgot about the TM500 series.
I am trying to find the connectors that are used on the 500 series Scope plug-ins and chassis.
Pretty sure they are Amphanol, but I only have the Tek part number.
Grayson





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

Stefan
 

Thank you, Chuck. I was going crazy trying to figure out why the screen blanked quickly after showing the proper image.

-S


Re: Soul searching = Lab Purge

Ed (SCSKITS)
 

David:

May be interested in some of the HAM gear or the tube radios.
Send me a list off group when you get a chance.

Located in western CT...
Ed


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

Dano
 

Ok, I don't normally respond to stuff like this, but this one got me.

Regarding the eBay listing, "Used Item", but "only once!"

I'll shut up now.

On 9/28/2020 1:37 PM, John Williams wrote:
The amphenol Part numbers are 26-159-16 for male and 26-190-16 for female. Make sure the male has the locating pins intact. There is a similar connector used in the 551 and 555 power cable but they won’t fit.

Here is an example of what is on eBay, this looks like a nice set of both connectors, alas not mine.

https://www.ebay.com/itm/Amphenol-Male-and-Female-26-190-16-Gold-Plated-Tektronix-plug-in/184462985269?hash=item2af2d9c835:g:R8MAAOSw7ixfbrqi




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

John Williams
 

The amphenol Part numbers are 26-159-16 for male and 26-190-16 for female. Make sure the male has the locating pins intact. There is a similar connector used in the 551 and 555 power cable but they won’t fit.

Here is an example of what is on eBay, this looks like a nice set of both connectors, alas not mine.

https://www.ebay.com/itm/Amphenol-Male-and-Female-26-190-16-Gold-Plated-Tektronix-plug-in/184462985269?hash=item2af2d9c835:g:R8MAAOSw7ixfbrqi


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

Grayson Evans
 

Yes, I forgot about the TM500 series.
I am trying to find the connectors that are used on the 500 series Scope plug-ins and chassis.
Pretty sure they are Amphanol, but I only have the Tek part number.
Grayson


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

Grayson Evans
 

I was afraid of that. A lot of knowledge went with him.
I hope someone or some organization was able to keep his collection. He had a huge "warehouse" with tons of scopes as well as manuals.
I still have the book but haven't seen it on-line in many years.

Regards,
Grayson


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

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