if nothing else,
make a mandrel out of a piece of scrap by drilling a .141 hole in something that will give you a flat face to score the
jacket, and a place to hold the coax with your thumb while you do the scoring
or find a friend with a small lathe and a minimill, and you could get clever with cutoff dimensions
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Mike Vande Voort via groups.io Sent: Tuesday, September 08, 2020 9:34 AM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] E4407B J1 serial King might make one as well, dirt simple and turn the entire process into a satisfying experience -----Original Message----- From: [email protected] < [email protected]> On Behalf Of Chuck Harris Sent: Monday, September 07, 2020 9:16 PM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] E4407B J1 serial 141 semi rigid is cut using a spacing tool that uses a single edged razor blade to scribe a cut around the shield. It then is snapped to break the shield. The teflon is cut in the same way, only using a different slot in the tool. Belden makes a kit that is easily found on ebay. -Chuck Harris Sandra Carroll wrote: Any got advice on stripping rigid cable aside from expensive stripping machines?
everything I try with normal cutters/strippers leaves the outer steel
jagged and bent inwards
I would like to try to put a SMA on it and use the induction method.
I do think I'll either need flux this time or more pinpoint heating as
I've got to heat up the outer sleeve which will take a bit more to
heat up
|
Re: OT: Looking for recommendations on 3D modeling software
On 9/8/20 10:13 AM, Francesco Franzini wrote: I fully understand the point and I have greybeard too, but what you say as a warning is valid for any technical software, what is free today may be not tomorrow, evolution on OS may suddenly make any software not working if you don't update it to the latest release, after a lot of work and time spent to keep old software alive using virtual machine or outdated PC i prefer to use for my personal stuff the most updated free software capable to export my design (STL, IGES, STEP etc.) This is not a problem if the source code has been releases, which it very commonly is for software that is actually free. (as opposed to just giving lip service to being "free") Once the source code is "out there", it's out there, and it almost never disappears thanks to replication. We used to ensure this with FTP site mirrors and Usenet-based binary file distribution. This has been going on for decades. "Open source" is not new; in fact it's one of the oldest parts of computing. The idea of suits rolling in and charging for everything, and people who don't know any better paying what they demand, is comparatively recent. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Re: OT: Looking for recommendations on 3D modeling software
On 9/8/20 9:29 AM, Chuck Harris wrote: Bear in mind that one of the features of open source projects
is they really never go away. Commercial projects come and vanish,
and change their licensing terms with great regularity.
OpenSCAD is used by dozens of other projects, and is a very solid
package. The source is available on github, and if you don't like
the direction the authors are going, you can take it and make it
your way. Sure, if you aren't talented that way, you will have to
hire it done, but that is what you are already doing with the outright
commercial packages... without any hope of customization.
If OpenSCAD is too hard to learn (it isn't), you can use one of the
many packages, like FreeCAD, that have incorporated it into their
graphic interfaces.
We greybeards remember the PC so well, that we wrote GNU and linux
for it, and emancipated ourselves from Microsoft. Not exactly...GNU software was initially developed to emancipate us from Sun, AT&T, and related companies in the UNIX world, and not generally for PCs. In recent years it has become a way for PC users to get away from the childish mess that is Microsoft, but let's not forget that they (GNU and Linux, separately) were envisioned and implemented as an alternative to commercial UNIX on far higher-end hardware than PCs. And I'm not just talking about in the beginning. But otherwise you hit the nail very much on the head. OpenSCAD is exploding in popularity, politics and release schedules notwithstanding. The notion of it being "dead" is pretty silly. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
Make that 74Z-0-0-157 ---------- Forwarded message --------- From: Pete Manfre via <pmanfre=[email protected]>Date: Tue, Sep 8, 2020, 10:47 AM Subject: Re: [HP-Agilent-Keysight-equipment] E4407B J1 serial To: < [email protected]> Best one i have found and use is the Huber+Suhner 747-0-0-157.? I have a few.? ?Not cheap but perfect job every?
Pete wa2odo
|
InfiniiVision 1000 X-Series Oscilloscopes
Hi,
Does any member have an experience with?InfiniiVision 1000 X-Series Oscilloscopes? Am thinking about buying one. Any recommendations.
Carl
|
Best one i have found and use is the Huber+Suhner 747-0-0-157.? I have a few.? ?Not cheap but perfect job every?
Pete wa2odo
|
King might make one as well, dirt simple and turn the entire process into
a satisfying experience
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Chuck Harris Sent: Monday, September 07, 2020 9:16 PM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] E4407B J1 serial 141 semi rigid is cut using a spacing tool that uses a single edged razor blade to scribe a cut around the shield. It then is snapped to break the shield. The teflon is cut in the same way, only using a different slot in the tool. Belden makes a kit that is easily found on ebay. -Chuck Harris Sandra Carroll wrote: Any got advice on stripping rigid cable aside from expensive stripping machines?
everything I try with normal cutters/strippers leaves the outer steel
jagged and bent inwards
I would like to try to put a SMA on it and use the induction method.
I do think I'll either need flux this time or more pinpoint heating as
I've got to heat up the outer sleeve which will take a bit more to
heat up
|
The DSO8064A/MSO8064A/DSO8104A/MSO8104A uses the same acquisition board. That being said, they are way more expensive then the 54831M. All the 54831M, 54831B, 54831D, 54832B and 54832D also uses the same acquisition board.
The first thing I would try before ordering anything else is to find the real issue. As had been said, when the 50 ohm doesn't work, it's usually blown. One test I would do before ordering any part is measure the input impedance of the faulty channels. I agree with Ovidiu and Amir, 99% chance the input termination is blown, but I would verify it first. You can also follow Keysight calibration procedure. Usually, in the service manual, there is a flow chart that links a specific failure to the hardware issue.?
Keep in mind that a 54831M is worth about 700USD (even though seller are selling twice too expensive), so before spending 200$ for replacement parts, I would look carefully at eBay listing. I bought mine last year for 800USD with probes and it passed all self test and self cal.
When you say the calibration fail, does all channel fails or only the 2 faulty? Because if all channel fails, there is a second issue somewhere.
The other thing is your OS. I don't want to say it's impossible, but... Changing the OS in any of these product is extremely hard, even more with these older units. Windows95 and Windows XP works on totally different architecture. The only thing that could help you is the 54832B had a windows XP version. If you can find an image of a 54832B image, it could work. There is a big step up from W95 to XP, mostly for the USB drivers, but the step from XP to W10 wouldn't give you much. As suggested, one of the best upgrade you can make is to use an SSD instead of that drive.?
If the OS is a major concern for you, I would look for a DSO8064A instead.
|
Re: OT: Looking for recommendations on 3D modeling software
I fully understand the point and I have greybeard too, but what you say as a warning is valid for any technical software, what is free today may be not tomorrow, evolution on OS may suddenly make any software not working if you don't update it to the latest release, after a lot of work and time spent to keep old software alive using virtual machine or outdated PC i prefer to use for my personal stuff the most updated free software capable to export my design (STL, IGES, STEP etc.)
On my perspective the situation of professional software is even worse, I am using SIEMENS NX CAD and PLM, very sophisticated tool, I started to use it since the 80's, this software passed thru three ownership change, two hardware platform change and 30 major release, we currently have two international location and every time they are not fully aligned as a version or OS to share the design is just a nightmare.
Francesco
?
|
Re: OT: Looking for recommendations on 3D modeling software
I¡¯m surprised no one has mention fusion360. Full CAD/CAM with Eagle now as well.
3D parametric, direct manufacture to 3D printers. I send to both simplify3D and chitubox all the time.
Easy to use. Still no cost to makers.
On open source
Some comments. I¡¯ve run into countless projects that die or are abandoned in the opensource community. Yeh some of the big stay around but far greater go nowhere.
Opensource is not this great pancea of perfection. If your not a developer yourself you can only hope they¡¯ll accept your proposal for a change. Personal experience is they don¡¯t always do this. In fact in my experience they rarely do. It does not fit the authors vision of how it should work.
I love Perl. But the community refused for the longest time to accept ebcdic(mainframe) into the their world. And only did by making it ascii internally which has its own problems for those of us in the mainframe.
I¡¯m not against opensource, I use it all the time. Like anything it has it¡¯s upside and downside.
Sandra
Sent from my iPhone 7 Plus
toggle quoted message
Show quoted text
On Sep 8, 2020, at 9:29 AM, Chuck Harris <cfharris@...> wrote:
?Bear in mind that one of the features of open source projects
is they really never go away. Commercial projects come and vanish,
and change their licensing terms with great regularity.
OpenSCAD is used by dozens of other projects, and is a very solid
package. The source is available on github, and if you don't like
the direction the authors are going, you can take it and make it
your way. Sure, if you aren't talented that way, you will have to
hire it done, but that is what you are already doing with the outright
commercial packages... without any hope of customization.
If OpenSCAD is too hard to learn (it isn't), you can use one of the
many packages, like FreeCAD, that have incorporated it into their
graphic interfaces.
We greybeards remember the PC so well, that we wrote GNU and linux
for it, and emancipated ourselves from Microsoft.
Educator licenses are available to universities to allow them to
train their kiddies on the package at no cost to the university.
The university professor gives a 1 year copy to each student, and
they use it for their course work. At the end of the year, it is
inactivated.
The companies do that because it is free advertising, and a free
beta testing of their product. They also know that once trained on
a product, students will ask for it where they work.
That is the sole and only reason Apple and Microsoft have such nice
licensing terms for K-12 schools.
Also, to use a student license, usually you are required to show
registration at a university. The rules on student licenses are
highly restrictive relative to commercial intention. A product
designed on a student license cannot ever be commercialized without
transferring it to a full on commercial seat... at typically $50K a
seat... and once there, it can never be brought back to a student
seat.
-Chuck Harris
Tom Gardner wrote:
Overall I doubt that members of this group will want to make anything really complex,
but they might like it to be available to other members in a decade or so. So have a
quick look and choose any tool that feels comfortable without a large learning curve.
After a///very//quick look/, it appears that OnShape is....
Free for "educators", with a 1 year time limit on the licence - whatever that means.
Online only, running in a browser like OpenJSCAD. The standard questions with any
"cloud service" are whether:
* it will be there in 5 years time; see Microsoft PlaysForSure(TM), and giggle
* the licence conditions can be changed, e.g. is the company/product changes ownership
Greybeards will remember the sighs of relief when PCs became available, because it
meant that users' data was not "held hostage" inside silos owned by other companies.
On 08/09/20 02:54, Kuba Ober wrote:
OnShape - as long as it¡¯s not for commercial purposes - all your projects are
publicly viewable then. A joy to use. All it needs is an OK internet connection and
a supported web browser.
FreeCAD is another option.
7 sep. 2020 kl. 10:17 fm skrev victor.silva via groups.io
<daejon1@...>:
?This is off topic but the end result will be for HP products so please bear with me.
I am looking for recommendation on 3D modeling software (preferably freeware) and
a company that I can then send the 3D model to
make a battery holder clamshells. I propose to make half clamshell pieces that
would then make a complete
battery holder by using 2 pieces that would fit together.
Thank you,
Victor
|
Amphenol, 901-2500 Tool Kit is what is used for 141 and other
small sizes of semi-rigid coax, and SMA connectors.
-Chuck Harris
amirb wrote:
toggle quoted message
Show quoted text
there are tons of coax strippers on ebay but none of them accepts .141" cable
_._,_._,_
|
Re: OT: Looking for recommendations on 3D modeling software
Bear in mind that one of the features of open source projects
is they really never go away. Commercial projects come and vanish,
and change their licensing terms with great regularity.
OpenSCAD is used by dozens of other projects, and is a very solid
package. The source is available on github, and if you don't like
the direction the authors are going, you can take it and make it
your way. Sure, if you aren't talented that way, you will have to
hire it done, but that is what you are already doing with the outright
commercial packages... without any hope of customization.
If OpenSCAD is too hard to learn (it isn't), you can use one of the
many packages, like FreeCAD, that have incorporated it into their
graphic interfaces.
We greybeards remember the PC so well, that we wrote GNU and linux
for it, and emancipated ourselves from Microsoft.
Educator licenses are available to universities to allow them to
train their kiddies on the package at no cost to the university.
The university professor gives a 1 year copy to each student, and
they use it for their course work. At the end of the year, it is
inactivated.
The companies do that because it is free advertising, and a free
beta testing of their product. They also know that once trained on
a product, students will ask for it where they work.
That is the sole and only reason Apple and Microsoft have such nice
licensing terms for K-12 schools.
Also, to use a student license, usually you are required to show
registration at a university. The rules on student licenses are
highly restrictive relative to commercial intention. A product
designed on a student license cannot ever be commercialized without
transferring it to a full on commercial seat... at typically $50K a
seat... and once there, it can never be brought back to a student
seat.
-Chuck Harris
Tom Gardner wrote:
toggle quoted message
Show quoted text
Overall I doubt that members of this group will want to make anything really complex,
but they might like it to be available to other members in a decade or so. So have a
quick look and choose any tool that feels comfortable without a large learning curve.
After a///very//quick look/, it appears that OnShape is....
Free for "educators", with a 1 year time limit on the licence - whatever that means.
Online only, running in a browser like OpenJSCAD. The standard questions with any
"cloud service" are whether:
* it will be there in 5 years time; see Microsoft PlaysForSure(TM), and giggle
* the licence conditions can be changed, e.g. is the company/product changes ownership
Greybeards will remember the sighs of relief when PCs became available, because it
meant that users' data was not "held hostage" inside silos owned by other companies.
On 08/09/20 02:54, Kuba Ober wrote:
OnShape - as long as it¡¯s not for commercial purposes - all your projects are
publicly viewable then. A joy to use. All it needs is an OK internet connection and
a supported web browser.
FreeCAD is another option.
7 sep. 2020 kl. 10:17 fm skrev victor.silva via groups.io
<daejon1@...>:
?This is off topic but the end result will be for HP products so please bear with me.
I am looking for recommendation on 3D modeling software (preferably freeware) and
a company that I can then send the 3D model to?
make a battery holder clamshells.? I propose to make half clamshell pieces that
would then make a complete?
battery holder by using 2 pieces that would fit together.
Thank you,
Victor
|
Re: OT (just a bit) - Centralab Steatite Switches
That would be a handy kit to have!
Now that I'm clued in to the Electroswitch data, ss I keep searching, I think I may have found an entire switch that may be a very suitable replacement. It's an Electroswitch with glass-epoxy wafers instead of steatite. I'm not sure, but I presume that would not pose a problem for this application and would certainly make matters much easier for me.
Thanks,
Barry - N4BUQ
toggle quoted message
Show quoted text
----- Original Message ----- From: "Michael A. Terrell" <terrell.michael.a@...>
To: [email protected]
Sent: Tuesday, September 8, 2020 8:06:23 AM
Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab Steatite Switches
At one time, Centralab distributors had kits of blank wafers, contacts and
a swaging tool to build custom wafers. I would love to find one that wasn't
just the dregs. It would make it easier to repair a lot of older equipment.
Let me know if you need more help.
On Tue, Sep 8, 2020 at 8:42 AM n4buq <n4buq@...> wrote:
Hi Michael,
While there could be something I'm not seeing, SurplusSales' (SWR)
PA024-2794 near the center of this page looks like what I would need:
Unfortunate that one of the wafers has only two contacts but the other two
(if all things are correct) would be drop-in replacements.
I think I have found a source for wafers that will work but the seller has
them in a 15-piece lot and I only want five so waiting to hear 1) whether
the hole spacing is correct and 2) whether he'll sell just five.
The switch in question is for an Acton Labs Model 600A VTVM from the late
'50s and is just too cool of a meter to pass up repairing it as best as I
can. I epoxied some of the broken wafers and they appeared to be okay but
then some of the more broken ones just aren't looking too good and I fear
that the epoxy job may not be a permanent as I would like. I still can't
figure how that switch was hit hard enough to break it considering
where/how it's located. Unfortunate.
Thanks again for the help.
Thanks,
Barry - N4BUQ
----- Original Message -----
From: "Michael A. Terrell" <terrell.michael.a@...>
To: [email protected]
Sent: Monday, September 7, 2020 10:36:18 PM
Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab Steatite Switches
has some surplus
Centralab switches, but they are quite proud of them. If you can identify
the proper base model, search Ebay for them.
If I can get someone to remove the brush and high weeds from the front of
my shed, I'll see what I still have. I bought them when they were still
in
production, so the prices are much lower.
On Mon, Sep 7, 2020 at 10:14 PM n4buq <n4buq@...> wrote:
Hi Michael,
Thanks so much for the link. I'm pretty sure I can identify which switch
(or wafers) are the ones I'm looking for. I've tried epoxying the
bits and
pieces back together and have mixed results. Some are "okay" but
others
where the wafer was broken in several places are not something I think
I
can trust so will be looking for replacement wafers.
Thanks,
Barry - N4BUQ
----- Original Message -----
From: "Michael A. Terrell" <terrell.michael.a@...>
To: [email protected]
Sent: Monday, September 7, 2020 8:59:43 PM
Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) -
Centralab
Steatite Switches
The letters indicate the wafer size and construction. They also made
phenolic switches. I think I have a new one left, but I can not get
to
the
building with them. I had some of their rotary switch datasheets on
my
Earthlink website, but they shut them all down without warning.
Centralab is now part of Electroswitch:
but they do
not use
the Centralab part numbers.
Here is an old Allied Radio catalog with one page of Centralab
switches,
on
page 230:
On Mon, Sep 7, 2020 at 11:55 AM n4buq <n4buq@...> wrote:
I'm in search of some steatite switch wafers for a broken switch
and
in my
searches, I have found many instance where the Centralab wafer
model
number
has a one to three digit designator (e.g. D, DD, PA, PS, PSY, etc.)
yet I
have not found anything that describes what those designators
indicate.
Does anyone know about those?
Specifically, I'm looking for some 1-POL, 11-POS non-shortingwafers
(where
the wiper and the other contacts are all on the same side of the
wafer).
Additionally, I need them to have the wider hole spacing (where
there's a
slight elongation of the wafer 180-deg apart to accomodate a wider
set
of
holes).
I think I can find some that will work but I still wonder what
those
designations are all about.
Thanks,
Barry - N4BUQ
|
I haven't had a chance to look for an OS restore yet, but I will. I still plan to image the hard drive, possibly regardless if I find a CD or not.
The more important question is how to deal with the two blown input amplifiers. If the two channels won't calibrate correctly for high impedance, it seems logical to fix the channels, not use them, or use them knowing the measurements will be wrong.
I'm willing to gamble on buying used ones, but spending money on having them replaced with possible fake/junk ones is the larger issue.
Does anyone know which other pieces of equipment these were used in, or any reputable places to buy them?
|
Re: OT (just a bit) - Centralab Steatite Switches
At one time, Centralab distributors had kits of blank wafers, contacts and a swaging tool to build custom wafers. I would love to find one that wasn't just the dregs. It would make it easier to repair a lot of older equipment. Let me know if you need more help.
On Tue, Sep 8, 2020 at 8:42 AM n4buq < n4buq@...> wrote: Hi Michael,
While there could be something I'm not seeing, SurplusSales' (SWR) PA024-2794 near the center of this page looks like what I would need:
Unfortunate that one of the wafers has only two contacts but the other two (if all things are correct) would be drop-in replacements.
I think I have found a source for wafers that will work but the seller has them in a 15-piece lot and I only want five so waiting to hear 1) whether the hole spacing is correct and 2) whether he'll sell just five.
The switch in question is for an Acton Labs Model 600A VTVM from the late '50s and is just too cool of a meter to pass up repairing it as best as I can.? I epoxied some of the broken wafers and they appeared to be okay but then some of the more broken ones just aren't looking too good and I fear that the epoxy job may not be a permanent as I would like.? I still can't figure how that switch was hit hard enough to break it considering where/how it's located.? Unfortunate.
Thanks again for the help.
Thanks,
Barry - N4BUQ
----- Original Message -----
> From: "Michael A. Terrell" <terrell.michael.a@...>
> To: [email protected]
> Sent: Monday, September 7, 2020 10:36:18 PM
> Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab Steatite Switches
>
> has some surplus
> Centralab switches, but they are quite proud of them. If you can identify
> the proper base model, search Ebay for them.
>
> If I can get someone to remove the brush and high weeds from the front of
> my shed, I'll see what I still have. I bought them when they were still in
> production, so the prices are much lower.
>
> On Mon, Sep 7, 2020 at 10:14 PM n4buq <n4buq@...> wrote:
>
> > Hi Michael,
> >
> > Thanks so much for the link.? I'm pretty sure I can identify which switch
> > (or wafers) are the ones I'm looking for.? I've tried epoxying the bits and
> > pieces back together and have mixed results.? Some are "okay" but others
> > where the wafer was broken in several places are not something I think I
> > can trust so will be looking for replacement wafers.
> >
> > Thanks,
> > Barry - N4BUQ
> >
> > ----- Original Message -----
> > > From: "Michael A. Terrell" <terrell.michael.a@...>
> > > To: [email protected]
> > > Sent: Monday, September 7, 2020 8:59:43 PM
> > > Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab
> > Steatite Switches
> > >
> > > The letters indicate the wafer size and construction. They also made
> > > phenolic switches. I think I have a new one left, but I can not get to
> > the
> > > building with them. I had some of their rotary switch datasheets on my
> > > Earthlink website, but they shut them all down without warning.
> > >
> > > Centralab is now part of Electroswitch:
> > >
> > > but they do not use
> > > the Centralab part numbers.
> > >
> > > Here is an old Allied Radio catalog with one page of Centralab switches,
> > on
> > > page 230:
> > >
> > >
> >
> > >
> > >
> > > On Mon, Sep 7, 2020 at 11:55 AM n4buq <n4buq@...> wrote:
> > >
> > > > I'm in search of some steatite switch wafers for a broken switch and
> > in my
> > > > searches, I have found many instance where the Centralab wafer model
> > number
> > > > has a one to three digit designator (e.g. D, DD, PA, PS, PSY, etc.)
> > yet I
> > > > have not found anything that describes what those designators indicate.
> > > > Does anyone know about those?
> > > >
> > > > Specifically, I'm looking for some 1-POL, 11-POS non-shortingwafers
> > (where
> > > > the wiper and the other contacts are all on the same side of the
> > wafer).
> > > > Additionally, I need them to have the wider hole spacing (where
> > there's a
> > > > slight elongation of the wafer 180-deg apart to accomodate a wider set
> > of
> > > > holes).
> > > >
> > > > I think I can find some that will work but I still wonder what those
> > > > designations are all about.
> > > >
> > > > Thanks,
> > > > Barry - N4BUQ
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
>
>
>
>
|
Re: OT (just a bit) - Centralab Steatite Switches
Hi Michael,
While there could be something I'm not seeing, SurplusSales' (SWR) PA024-2794 near the center of this page looks like what I would need:
Unfortunate that one of the wafers has only two contacts but the other two (if all things are correct) would be drop-in replacements.
I think I have found a source for wafers that will work but the seller has them in a 15-piece lot and I only want five so waiting to hear 1) whether the hole spacing is correct and 2) whether he'll sell just five.
The switch in question is for an Acton Labs Model 600A VTVM from the late '50s and is just too cool of a meter to pass up repairing it as best as I can. I epoxied some of the broken wafers and they appeared to be okay but then some of the more broken ones just aren't looking too good and I fear that the epoxy job may not be a permanent as I would like. I still can't figure how that switch was hit hard enough to break it considering where/how it's located. Unfortunate.
Thanks again for the help.
Thanks,
Barry - N4BUQ
toggle quoted message
Show quoted text
----- Original Message ----- From: "Michael A. Terrell" <terrell.michael.a@...>
To: [email protected]
Sent: Monday, September 7, 2020 10:36:18 PM
Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab Steatite Switches
has some surplus
Centralab switches, but they are quite proud of them. If you can identify
the proper base model, search Ebay for them.
If I can get someone to remove the brush and high weeds from the front of
my shed, I'll see what I still have. I bought them when they were still in
production, so the prices are much lower.
On Mon, Sep 7, 2020 at 10:14 PM n4buq <n4buq@...> wrote:
Hi Michael,
Thanks so much for the link. I'm pretty sure I can identify which switch
(or wafers) are the ones I'm looking for. I've tried epoxying the bits and
pieces back together and have mixed results. Some are "okay" but others
where the wafer was broken in several places are not something I think I
can trust so will be looking for replacement wafers.
Thanks,
Barry - N4BUQ
----- Original Message -----
From: "Michael A. Terrell" <terrell.michael.a@...>
To: [email protected]
Sent: Monday, September 7, 2020 8:59:43 PM
Subject: Re: [HP-Agilent-Keysight-equipment] OT (just a bit) - Centralab Steatite Switches
The letters indicate the wafer size and construction. They also made
phenolic switches. I think I have a new one left, but I can not get to
the
building with them. I had some of their rotary switch datasheets on my
Earthlink website, but they shut them all down without warning.
Centralab is now part of Electroswitch:
but they do not use
the Centralab part numbers.
Here is an old Allied Radio catalog with one page of Centralab switches, on
page 230:
On Mon, Sep 7, 2020 at 11:55 AM n4buq <n4buq@...> wrote:
I'm in search of some steatite switch wafers for a broken switch and
in my
searches, I have found many instance where the Centralab wafer model
number
has a one to three digit designator (e.g. D, DD, PA, PS, PSY, etc.)
yet I
have not found anything that describes what those designators indicate.
Does anyone know about those?
Specifically, I'm looking for some 1-POL, 11-POS non-shortingwafers
(where
the wiper and the other contacts are all on the same side of the
wafer).
Additionally, I need them to have the wider hole spacing (where
there's a
slight elongation of the wafer 180-deg apart to accomodate a wider set
of
holes).
I think I can find some that will work but I still wonder what those
designations are all about.
Thanks,
Barry - N4BUQ
|
there are tons of coax strippers on ebay but none of them accepts .141" cable
|
Ok I may be blind. I looked on eBay and could not locate. Is it possible to get a link to one or a good description to search on?
Sandra
Sent from my iPhone 7 Plus
toggle quoted message
Show quoted text
On Sep 7, 2020, at 10:16 PM, Chuck Harris <cfharris@...> wrote:
?141 semi rigid is cut using a spacing tool that uses a single
edged razor blade to scribe a cut around the shield. It then
is snapped to break the shield. The teflon is cut in the same
way, only using a different slot in the tool.
Belden makes a kit that is easily found on ebay.
-Chuck Harris
Sandra Carroll wrote:
Any got advice on stripping rigid cable aside from expensive stripping machines?
everything I try with normal cutters/strippers leaves the outer steel jagged and bent
inwards
I would like to try to put a SMA on it and use the induction method.
I do think I'll either need flux this time or more pinpoint heating as I've got to
heat up the outer sleeve which will take a bit more to heat up
|
Re: looking for a few knobs
Politics again? No, please, no.
If you want politics, head over to sci.electronics.design for some
illuminating electronics and some toasty politics.
On 08/09/20 03:27, Tam Hanna wrote:
On the risk of getting beaten again: OpenSCAD is an AUSTRIAN
product, and I KNOW AUSTRIAN POLITICS and actually know some of
the developers face to face (they hate me though).
<opinionated political rant deleted to avoid blood pressure
problems>
|
Re: OT: Looking for recommendations on 3D modeling software
Overall I doubt that members of this
group will want to make anything really complex, but they might
like it to be available to other members in a decade or so. So
have a quick look and choose any tool that feels comfortable
without a large learning curve.
After a very quick look, it appears that
OnShape is....
Free for "educators", with a 1 year time limit on the licence -
whatever that means.
Online only, running in a browser like OpenJSCAD. The standard
questions with any "cloud service" are whether:
- it will be there in 5 years time; see Microsoft
PlaysForSure(TM), and giggle
- the licence conditions can be changed, e.g. is the
company/product changes ownership
Greybeards will remember the sighs of relief when PCs became
available, because it meant that users' data was not "held
hostage" inside silos owned by other companies.
On 08/09/20 02:54, Kuba Ober wrote:
toggle quoted message
Show quoted text
OnShape - as long as it¡¯s not for commercial
purposes - all your projects are publicly viewable then. A joy
to use. All it needs is an OK internet connection and a
supported web browser.
FreeCAD is another option.
7 sep. 2020 kl. 10:17 fm skrev
victor.silva via groups.io
<daejon1@...>:
?This is off topic but the end result will be for
HP products so please bear with me.
I am looking for recommendation on 3D modeling software
(preferably freeware) and a company that I can then send the
3D model to?
make a battery holder clamshells.? I propose to make half
clamshell pieces that would then make a complete?
battery holder by using 2 pieces that would fit together.
Thank you,
Victor
|
Mike Vande Voort
Dave McGuire
Michael A. Terrell