Re: Racks for older equipment
These are also called Metro racks and are used extensively in restaruants.
Check your local craigslist and auction sites. The commercial ones can
handle 800 lbs per shelf(!) I've found a couple of the commercial ones
for under $75. They're great for storing equipment.
I found one of those carts in a dumpster once; turned into a very handy
project cart for my shop.
Paul
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On Fri, Apr 10, 2020 at 10:50:14AM -0700, wallydoc via groups.io wrote: OOPS I think the Trinity shelves/cart things are back
Is this what is being referred to??
Wally KC9INK
!DSPAM:5e90b1e1175801145720140!
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix & Windows
|
Re: Racks for older equipment
I have a whole bunch of these shelving units in my house, some for books, some used as lab benchtop shelving and some used for random stuff. One can even buy plastic mats of various sizes and colors and thicknesses to sit on the shelves to solve the problem of instrument feet getting caught in the wire shelves (and to keep books from getting permanent dents from sitting on the wire shelving).
When I started looking in the home improvement stores around here for more, I found the selection in the stores to be far smaller than it was ten or fifteen years ago.
Both ULine and Global Industrial sell a wide variety of sizes, casters, extra shelves, etc.?
ULine is more expensive but has a wider selection of sizes. Global Industrial has pretty much all of the “standard” sizes and is less expensive. The parts are interchangeable except for the plastic cones that lock the shelving to the legs, which are pairwise interchangeable only (I found this out the hard way when I moved 5 shelf units from CO to FL). I think they’re all made by the same company - Nexel or Nextel, something like that
DaveD
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On Apr 10, 2020, at 13:47, wallydoc via < wallydoc@...> wrote: Thanks for the input by all of you.
OK I take it that rolling wire racks are a good idea, I wanted to order one or two carts from COSTCO but apparently the lower ones are not available even from the manufacturer (Trinity) right now. The higher ones are available and I have some but wanted lower ones for use in the shack. I was really hoping that this would be an option. They are more versatile than dedicated equipment racks.
I did find some 19 inch racks on Amazon for stage equipment that look good, they are about 3 feet high .
I did not open the HEIC file, I do not have the proper file viewer and don't wish to pay for one.?
Since I cannot get the lower rolling racks here is what I found:
Wally
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Barry,
I have one of these instruments, but it is too buried to easily allow inspection to determine what type of pots were used.?
If the values are above 1k, they are probably not wire-wound.? If they happen to be Allen-Bradley (AB) pots, an age old remedy is to take a 1/16-inch drill bit and drill a hole in the cover - in the outer crevice - at the bottom of the pot away from the terminals.? The snout of a can of contact cleaner can then be inserted in the drilled hole to blast the interior of the pot.? This cleaning will typically last for two or three years and then you might have to do it again.? The access hole remains available.? In drilling the hole, metal chips seem to be pulled outward and are unlikely to enter the pot.? But be careful so that when the drill bit breaks through, that it does not enter and damage the pot.
Often these pots can be cleaned by pulling outward on the shaft -- it will move about 1/16-inch -- while quickly turning the knob from end to end.
Bruce, KG6OJI
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Re: Craigslist HP 8566B Indianapolis
Hmmm...it took me something like eight years to find a working 8566B pair, with cables, at a reasonable (meaning what I could afford) price ($1100). That was maybe five years ago, and I’ve paid attention somewhat to the prices since. I’ve just never seen anything in the $20 ballpark, or $150 ballpark for that matter. It just surprised me that got one so inexpensively.
Thanks for the information.
Maybe I should renew my effort to find an inexpensive, working 8753C.
DaveD
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On Apr 10, 2020, at 13:30, Paul Amaranth <paul@...> wrote:
It varies considerably. I paid around $150 each for the display and SA and
then fabricated the cables. If I ran across somebody selling them for $20
a piece I would have bought a ton (probably literally). If you buy them for
"parts only" the price can go down significantly.
Considering it comes with the cables, that Craigslist price was pretty good.
If you can dicker down, it would be even better.
Had a project that required an SA a little while ago and just loved using it.
Paul
On Fri, Apr 10, 2020 at 01:20:30PM -0400, Dave Daniel wrote:
What do you mean by “sections”? RF and display sections, or something else? I was curious so I looked on ebay and 8566Bs (with both sections) are still listed for anywhere between ~$850 and ~$2500.
DaveD
On Apr 10, 2020, at 09:15, paul swedberg <paulswedb@...> wrote:
I have a few of these units all operational and yes they are seriously heavy. This unit is nice as it appears to have the interconnect cables. It is a really nice SA.
There was a flood of units some 7 years ago and another person and told me how nice they were. Well at less then $20/section I picked up a few hoping to make one good one. Turns out far more than 1 were operational. I had randomly picked up the interconnect cables some years before that. Just because...
Good luck and I would see if you can get a slightly better deal.
Regards
Paul
WB8TSL
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix & Windows
|
Re: Racks for older equipment
OOPS I think the Trinity shelves/cart things are back
Is this what is being referred to??
Wally KC9INK
|
Hi all, ? I have a rather bizarre problem with a 5343A counter. Observed symptoms are that the high frequency input works reliably up to about 250MHz, reads garbage from around 250MHz-800MHz, and then seems to work fine from 800MHz upward through 1GHz (I only have an 8640B handy atm so can't really test higher than that). Cranking up the input power a bunch seems to reduce the dead band to closer to 400MHz-600MHz. ? The counter initially failed troubleshooting step 4 in the service manual. That was resolved by replacing the A10 board (from another counter with a blown sampler). It now passes step 5 and is marginal on step 6 (sensitivity is a little lower than it ought to be but it seems to work). ? The one other observation I've made is the IF amplitude into and out of A11 drops off rapidly if an input is tuned into the range of frequencies that it's insensitive to, but I'm struggling to find a plausible explanation for why that could occur given my understanding of the counter design (that wouldn't also make higher frequencies not be detected). ? If anyone has any thoughts or has run into this before, suggestions would be appreciated. ? Thanks, Daniel, KC1EPN
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Re: Racks for older equipment
Thanks for the input by all of you.
OK I take it that rolling wire racks are a good idea, I wanted to order one or two carts from COSTCO but apparently the lower ones are not available even from the manufacturer (Trinity) right now. The higher ones are available and I have some but wanted lower ones for use in the shack. I was really hoping that this would be an option. They are more versatile than dedicated equipment racks.
I did find some 19 inch racks on Amazon for stage equipment that look good, they are about 3 feet high .
I did not open the HEIC file, I do not have the proper file viewer and don't wish to pay for one.?
Since I cannot get the lower rolling racks here is what I found:
https://www.amazon.com/gp/product/B000QDRTOG/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1
Wally
|
Hello, I would try chucking in 150USD, going up to 250 if SHTF. These units cost a rabbis ransom normally, if you do not - like I did - get them for a good price. Tam
With best regards Tam HANNA (emailing on a BlackBerry PRIV) Enjoy electronics? Join 14k other followers by visiting the Crazy Electronics Lab at Am 10. April 2020 19:14:26 MESZ schrieb Bill E <solartron@...>:
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Back to the topic, so, OK, I can get a bottom section and interconnect cables. Any ideas what I should pay for it? Again, non-matching, no cal data. Could be fun. OTOH, the system could weigh a lot less. :) Got the top section for $200 US.
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Re: Craigslist HP 8566B Indianapolis
It varies considerably. I paid around $150 each for the display and SA and
then fabricated the cables. If I ran across somebody selling them for $20
a piece I would have bought a ton (probably literally). If you buy them for
"parts only" the price can go down significantly.
Considering it comes with the cables, that Craigslist price was pretty good.
If you can dicker down, it would be even better.
Had a project that required an SA a little while ago and just loved using it.
Paul
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Show quoted text
On Fri, Apr 10, 2020 at 01:20:30PM -0400, Dave Daniel wrote: What do you mean by “sections”? RF and display sections, or something else? I was curious so I looked on ebay and 8566Bs (with both sections) are still listed for anywhere between ~$850 and ~$2500.
DaveD
On Apr 10, 2020, at 09:15, paul swedberg <paulswedb@...> wrote:
I have a few of these units all operational and yes they are seriously heavy. This unit is nice as it appears to have the interconnect cables. It is a really nice SA.
There was a flood of units some 7 years ago and another person and told me how nice they were. Well at less then $20/section I picked up a few hoping to make one good one. Turns out far more than 1 were operational. I had randomly picked up the interconnect cables some years before that. Just because...
Good luck and I would see if you can get a slightly better deal.
Regards
Paul
WB8TSL
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix & Windows
|
Re: Craigslist HP 8566B Indianapolis
What do you mean by “sections”? RF and display sections, or something else? I was curious so I looked on ebay and 8566Bs (with both sections) are still listed for anywhere between ~$850 and ~$2500.
DaveD
toggle quoted message
Show quoted text
On Apr 10, 2020, at 09:15, paul swedberg < paulswedb@...> wrote: I have a few of these units all operational and yes they are seriously heavy. This unit is nice as it appears to have the interconnect cables. It is a really nice SA. There was a flood?of units some 7 years ago and another person and told me how nice they were. Well at less then $20/section I picked up a few hoping to?make one good one. Turns out far more than 1 were operational. I had randomly picked up the interconnect cables some years before that. Just because... Good luck and I would see if you can get a slightly better deal. Regards Paul WB8TSL
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Re: First Gen HP 54810A with dead HD, Got ISO 3.5, Any way to write it to a drive?
HP54810A first gen non VIN?
Recovery to Win 95
That was a bit of a hassle, mostly due to my own incompetence.? I'm a PhD in Mechanical engineering with a specialty in tribology. I know a whole lot more about the high shear rheology? of the PFPE fluid used on the hard drive than how to make them talk to a PC. :-)
I will write up some key leanings here that might help someone else the way you guys helped me.??
Thank you so very very much by the way!?
1: In my case I was not able to connect with it using USB or mini din adapters. Did not matter if I went from DIN to miniDin? or if I did DIN-MiniDIN-USB. Once I borrowed a real old dirty keyboard from a junk pile at work I was able to connect and get into the BIOS.
2: A standard WIN98 SE boot disc was not able to connect to a 24X DVD Rom player with IDE I found but once I found a old CD player from around 98-2000 i could connect
3:? I was not able to get it to work with? the plug in board connected to the primary port and the CD ROM to the secondary. ? The scope will not connect to anything on the IDE ports until I changed the BIOS settings. The default settings is only recognizing the installed drive but after going down the list and set Pri Master to AUTO? ? and Pri Slave to CD ROM and make sure the jumpers are set right on the drives it booted up and it recognized the drive and assigned D: to the CD ROM.?
I connected a 5.25 drive and the CD to the PRIMARY IDE on the board without including the plug in board since I did not have a 40-44 IDE cable
At this point it looked like I could have been able to install the system on the 5.25 and then use Macrium Reflect to clone it over to a 2.5" drive once I had a working HD.? Alternatively It might have worked with a 44-40 pin IDE adapter? I was a bit impatient and did not read up on how to use Ghost. I got ABORT: 10180 Bad GET_PARAMETERS: 1 when typing ghost at the prompt.
At this point I decided to take a second look at the image I made using Macrium of the original drive.? I thought it was going to be corrupt but worth a try so I cloned the original disc image down to the 5.25" and it booted up and worked on it!? Then I simply hooked everything back and put a 2.5" IDE in with the same image and after resetting the BIOS (Auto on Pri IDE, not installed on secondary it booted up just fine!
Yesterday I got a "Mustpoint? SD SDHC SDX MMC Memory Card to IDE 2.5" 44 pin Male adapter converter "? from Amazon ($14.59) plugged a 8Gb SD card in it and used Macrium to burn down the image onto that and it worked perfect!? https://www.macrium.com/reflectfree
Again,? Thank you so very much for your help. Is there anywhere I can archive the disc image for someone else in the future having the same issue?? With the image it would be a 40 min job to burn it on a IDE-SD. The image is only 191Mb
For now I put up a copy of this text and the image file? on google Drive
Here is the imaging tool:
https://www.macrium.com/reflectfree
?
? ? ? I do have a disk outside the machine so if there is another free imaging tool that is more future proof, please let me know.and I will make another image and store it. Stay safe!? Yesterday I got a? ? ?    "Mustpoint? SD SDHC SDX MMC Memory Card to IDE 2.5" 44 pin Male adapter converter "??
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Back to the topic, so, OK, I can get a bottom section and interconnect cables. Any ideas what I should pay for it? Again, non-matching, no cal data. Could be fun. OTOH, the system could weigh a lot less. :) Got the top section for $200 US.
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I will say that I love my 3588A, just wish it was a bit faster. :) Oh, and I wouldn't part with my 54542A for anything.
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On 4/10/20 12:29 PM, Tam Hanna wrote: Sorry for my bluntness: tearing down a 4195A is a total madness. We use
the unit all the time in the lab, worst case you can sell it. It goes
down to 10HZ, which is really useful.
I have some contacts in West Germany who use these machines heavily and
can try to chase up any SW you might need. Also, why not just try to
take the second half off the dude as well, assemble the unit and see if
rapers stinkers.
Seriously: please please do not tear down the 4195A. If I were not in
Europe, I would come and collect it immediately. Tam I'm glad you said it first, tearing down a working 4195A is seriously straitjacket territory. A lot of us have those. Mine has never needed calibration (empirically...it agrees with a few other instruments here which have been calibrated) but surely we can figure out how to get the job done. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Racks for older equipment
I use them for the bench equipment. I use the 6 shelf, rolling, 2
foot deep by 4 foot wide variety.? You do need to make some
modifications, though.? There seem to be two varieties, one with
the shelf lip up, one with it down.? The one with it down is more
convenient to use, the one with it up needs feet on the equipment
high enough to clear the lip.
You'll find that the wires are far enough apart to make equipment
with feet very difficult to use.? Get a 4 by 8 foot sheet of
masonite, 1/8 inch, no holes needed (it's cheap).? Measure the
inside dimension of the shelf and have the local big box store cut
the masonite to the appropriate size.? Keep the excess, it's
useful for some things.
On the back of the rack fasten at least one outlet strip.? At the
top shelf (or where convenient) put an inexpensive under shelf
fluorescent lamp strip (or LED strip).
The shelf can be moved out for access to the back of the
equipment, the light is useful, the feet don't fall into the wire
gaps.
A flat table for the workbench (not too deep) makes a decent
workbench top.? Adjustable height is good.? White particle board
cut in two makes a decent 2 foot wide workbench when doubled.
Harvey
On 4/10/2020 12:05 PM, bownes wrote:
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The
other thing that works well is the wire rack rolling carts.
They will hold a lot of weight and an outlet strip fits well
behind the handle. I keep the gear on a set of wire rack
shelves, roll the cart over, pull off what I need for a given
exercise, roll the cart back to the bench, and off I go.
On Fri, Apr 10, 2020 at 9:08
AM ArtekManuals < manuals@...>
wrote:
Wally
Depends on largely on
1) The size of the castors ( wheels), bigger wheels are
generally easier
to deal with and actually less likely catch and tip
2) The floor surface they are rolling on
Weight? can be a factor, put? heavier on the bottom -Lighter
on the top
) think low center of gravity
Though things have changed in my current set up and I have
long since
abandoned the racks, you used to be able to find racks that
were 36"?
high. I really like these if you have the room as the make
great rolling
"table tops" with a power supply in the bottom
Dave
NR1DX
On 4/10/2020 7:09 AM, wallydoc via
wrote:
> I have a bunch of old HP and other equipment and am using
a Tek scope
> stand for some of it. I was wondering if anyone had any
suggestions
> about rolling stands for TE, Do the rolling racks?that
musicians use
> for their audio equipment work well enough? They are 19
inch racks.
> Any suggestions would be helpful.
>
> Wally KC9INK
>
--
Dave
Manuals@...
--
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software.
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Heh,? thanks. That's (mildly) encouraging. One issue, I had to replace the earom, so it has zero cal data, but I'm guessing that's really not a problem. If it needs cal, it needs full cal.
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Re: Racks for older equipment
What is a ".HEIC" file?? I can't open it.
Daun
Daun E. Yeagley II, N8ASB
On 4/10/2020 12:05 PM, bownes wrote:
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Show quoted text
The
other thing that works well is the wire rack rolling carts.
They will hold a lot of weight and an outlet strip fits well
behind the handle. I keep the gear on a set of wire rack
shelves, roll the cart over, pull off what I need for a given
exercise, roll the cart back to the bench, and off I go.
On Fri, Apr 10, 2020 at 9:08
AM ArtekManuals < manuals@...>
wrote:
Wally
Depends on largely on
1) The size of the castors ( wheels), bigger wheels are
generally easier
to deal with and actually less likely catch and tip
2) The floor surface they are rolling on
Weight? can be a factor, put? heavier on the bottom -Lighter
on the top
) think low center of gravity
Though things have changed in my current set up and I have
long since
abandoned the racks, you used to be able to find racks that
were 36"?
high. I really like these if you have the room as the make
great rolling
"table tops" with a power supply in the bottom
Dave
NR1DX
On 4/10/2020 7:09 AM, wallydoc via
wrote:
> I have a bunch of old HP and other equipment and am using
a Tek scope
> stand for some of it. I was wondering if anyone had any
suggestions
> about rolling stands for TE, Do the rolling racks?that
musicians use
> for their audio equipment work well enough? They are 19
inch racks.
> Any suggestions would be helpful.
>
> Wally KC9INK
>
--
Dave
Manuals@...
--
This email has been checked for viruses by Avast antivirus
software.
|
Hi Man, Sorry for my bluntness: tearing down a 4195A is a total madness. We use the unit all the time in the lab, worst case you can sell it. It goes down to 10HZ, which is really useful. I have some contacts in West Germany who use these machines heavily and can try to chase up any SW you might need. Also, why not just try to take the second half off the dude as well, assemble the unit and see if rapers stinkers. Seriously: please please do not tear down the 4195A. If I were not in Europe, I would come and collect it immediately.
With best regards Tam HANNA (emailing on a BlackBerry PRIV) Enjoy electronics? Join 14k other followers by visiting the Crazy Electronics Lab at Am 10. April 2020 18:17:28 MESZ schrieb Bill E <solartron@...>:
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I did see a couple of previous posts from a while back, still looks like far more effort than it's worth (or is practical to do).
|
I did see a couple of previous posts from a while back, still looks like far more effort than it's worth (or is practical to do).
|
Re: Racks for older equipment
The other thing that works well is the wire rack rolling carts. They will hold a lot of weight and an outlet strip fits well behind the handle. I keep the gear on a set of wire rack shelves, roll the cart over, pull off what I need for a given exercise, roll the cart back to the bench, and off I go.
On Fri, Apr 10, 2020 at 9:08 AM ArtekManuals < manuals@...> wrote: Wally
Depends on largely on
1) The size of the castors ( wheels), bigger wheels are generally easier
to deal with and actually less likely catch and tip
2) The floor surface they are rolling on
Weight? can be a factor, put? heavier on the bottom -Lighter on the top
) think low center of gravity
Though things have changed in my current set up and I have long since
abandoned the racks, you used to be able to find racks that were 36"?
high. I really like these if you have the room as the make great rolling
"table tops" with a power supply in the bottom
Dave
NR1DX
On 4/10/2020 7:09 AM, wallydoc via wrote:
> I have a bunch of old HP and other equipment and am using a Tek scope
> stand for some of it. I was wondering if anyone had any suggestions
> about rolling stands for TE, Do the rolling racks?that musicians use
> for their audio equipment work well enough? They are 19 inch racks.
> Any suggestions would be helpful.
>
> Wally KC9INK
>
--
Dave
Manuals@...
--
This email has been checked for viruses by Avast antivirus software.
|
ebrucehunter
Dave McGuire
bownes
