Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 3658869 times)

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Offline worsthorse

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55875 on: April 15, 2020, 08:11:46 pm »
All these heavy and involved subjects and here I am washing windows, blinds, curtains and general Spring cleaning. Plus prepping the bedroom for painting.

I feel so insignificant.  :P :-DD

I know. Whilst all this weighty talk of, well, whatever it is they are talking about was going on, I was making cookies, searing chicken for the next couple of meals, and cleaning the outdoor furniture in preparation for the arrival of sitting-on-the-deck-and-doing-nothing weather. Not a single cloud-based server to be found anywhere.   ;D
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Online mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55876 on: April 15, 2020, 08:14:52 pm »
Me and Grizewald did have a little bid war this last weekend. And I won. Not without some regrets; I'd told myself to stop well below where the auction ended but I think it was worth it.



From RFT Volkseigene Betrieb Gerätewerk Karl-Marx-Stadt (which used to be Siemens & Halske Werk Chemnitz), the 1KΩ Meßwiderstand. In NOS condition, with approval note and user manual, in original 1950s paper box. Unused, as far as I can tell.

I also received 1 Ω and 10 Ω variants of same origin. However, they have seen a 200lb gorilla sometime on their way to me (perhaps even before being sold, the packaging was unharmed and well made), and are rattling; the resistance wire carrier is broken off. They measure reasonably right, but are not in tolerance as far as my very quick 2-wire measurement could tell, though. I'll look them over and get back to them. (it might very well be so that the 974A does considerably better on 3 digits and up Ohms, of course, especially in 2-wire. Shorting the leads gives 0,08 Ω wire resistance, so that must be factored in, and will of course be more and more significant as measured resistance decreases. )

From another manufacturer, in the same shipment, I also received this;



This time, we're in Austria, and the brand is Norma, Fabrik Elektrische Messgeräte, and we've come into the swinging 60s. Again, with test protocol, original packaging, and flawless NOS condition. As far as my 974A can tell, it's within specification.  1964-09-16 it was measured to 99,995 absolute Ω, which comes out to 100.04399755 International Ω, and I measure it to 100.08 Ω including measurement leads which are measured to 0,08Ω when shorted per above. /hp/ sez BAM.

With the exception of a small NOS mains transformer tapped for 120, 220 and 300(!) Volts primary and some valve heater voltages secondary, the lot is concluded with this:



Also here, NOS 60s stuff, made in USSR this time, by V/O MACHPRIBORINTORG USSR MOSCOW (which I suspect is the import-export front end, not the factory as such), a 0,001 Henry mutual inductance coil. I've not made a measurement setup for it, but DC resistance I did check, and it is spot on, when accounting for measurement lead errors.

Its path to me is interesting. Apparently it was exported to the UK, and sold from "Electronic Hobbies" at 91 Pancras Road, London NW1 in 1970; their receipt was also included. (Is that £2 10 shillings? I'm quite bad at old UK money...) The store existed in 1977, I found an ad from them in the November edition of Wireless World (p135).

All in all, a reasonable catch, I think. Had it gone for the starting bid of SEK 130 (and neither me nor Grizewald would have let that happen), it would have been an orgy of jammy gits; but now it's more of what you'd expect from those Ukrainian sellers that sell old standards in sets. Plus that Soviet inductor (and a small transformer). And shipping was half of the cheapest I can find on Ebay.

Yeah, I'm happy.

Offline Saskia

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55877 on: April 15, 2020, 08:23:04 pm »
congrats.
 
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Offline worsthorse

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55878 on: April 15, 2020, 08:40:26 pm »
Even while I am sorting stuff into sell, giveaway, and keep piles, with the goal of the keep pile being the smallest, I still cruise ebay like nick cage did convenience stores...

[attachimg=1]

Photos to follow after unboxing.

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Offline BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55879 on: April 15, 2020, 10:19:36 pm »

[Bid-war with Grizewald about some very nice resistors on ebay]

Yeah, I'm happy.

Congrats for your winnings (poor Grizewald).
This reminds me about another project which I'm procrastinatig since a long time.  ::)  :palm:

It is a 10kOhm 0.005% resistor from VPG.
Details can be found here: https://www.eevblog.com/forum/metrology/my-first-10kohm-reference-resistor/

Since then I've added an Arduino nano (@bd139: yes, I know.  ;) ), a SHT21 sensor for measuring temperature and humidity, and a SD-card reader. The idea is: whenever the resistor is getting calibrated, you can measure the temperature nearby the resistor and the humidity level in the case. Together with the calibration data it can be stored on the SD-card so that  you'll have the full history of this thing anytime you want it.¹ To connect the Arduino nano, you have to put it into another box which will do then the connection. Some magnets will grab the box and will hold it tight. When you are doing some measuring, you can pull it out of the box, so no interferences from a running Arduino. There is also some silica gel below the pcb to keep humidity low. And yes, I did a mistake: the distance between the binding posts is bigger than the usual 19.05mm. I'll fix that in my next try.  :-/O  :D

¹Well, that's the idea. What it is actually missing is the programm for the nano.  ::) I'm not a very good programmer and therefore I'm avoiding (procrastinate) it. But I think, I'll do it the next days. Eventually...   |O

Here are some actual pictures from it:

Box in the box:


Box outside the box:


Top view. Below the pcb there is some silica gel. In the middle, there is the SHT21 sensor, carefully placed next to the resistor.


And this is the resistor itself:

“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 
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Offline worsthorse

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55880 on: April 15, 2020, 10:41:44 pm »

Yes, I fell for it.

[attach=1]

Nixie madness! The just arrived 5326B frequency counter (alas, without the 7th digit option) temporarily stacked on top of the 5328A frequency counter for a quick power up test. 
specialization is for insects.
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55881 on: April 16, 2020, 12:04:21 am »
You sly dog.  ;D  You didn't give us any clues as to what was arriving today.  :o

Nice one!  :-+

Edit....was this a Bean pimp? Don't recall but he can be slick too with well placed PM's.  :-DD
« Last Edit: April 16, 2020, 12:06:30 am by med6753 »
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Offline beanflying

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55882 on: April 16, 2020, 12:52:52 am »
I just work with the voices inside peoples heads >:D

[attachimg=1]

Less than two hours to go eBay auction: #254564357775
« Last Edit: April 16, 2020, 12:56:53 am by beanflying »
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Offline worsthorse

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55883 on: April 16, 2020, 12:57:44 am »
You sly dog.  ;D  You didn't give us any clues as to what was arriving today.  :o

Nice one!  :-+

Edit....was this a Bean pimp? Don't recall but he can be slick too with well placed PM's.  :-DD

I don't remember, actually. All I know is one minute I am minding my own business and the next, without recalling how I got there or why, I am clicking on "confirm this purchase" on ebay.   :-DD
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Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55884 on: April 16, 2020, 01:01:50 am »
You sly dog.  ;D  You didn't give us any clues as to what was arriving today.  :o

Nice one!  :-+

Edit....was this a Bean pimp? Don't recall but he can be slick too with well placed PM's.  :-DD

Bean pimped and I gave a little nudge.   >:D

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline Cubdriver

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55885 on: April 16, 2020, 01:05:51 am »
You sly dog.  ;D  You didn't give us any clues as to what was arriving today.  :o

Nice one!  :-+

Edit....was this a Bean pimp? Don't recall but he can be slick too with well placed PM's.  :-DD

I don't remember, actually. All I know is one minute I am minding my own business and the next, without recalling how I got there or why, I am clicking on "confirm this purchase" on ebay.   :-DD

The soft orange glow has a subtle hypnotic effect on the brain.  It can cause a fugue in which you click on 'buy it now' buttons on eBuy, then are surprised a few days later when mysterious boxes appear on your front step.

-Pat
If it jams, force it.  If it breaks, you needed a new one anyway...
 

Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55886 on: April 16, 2020, 03:44:33 am »
I just work with the voices inside peoples heads >:D



Less than two hours to go eBay auction: #254564357775

[attachimg=1]

mnem
 
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Online Zucca

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55887 on: April 16, 2020, 07:27:06 am »
/rant

I moved to a new apartment in Munich center. Did a lot of work in it. Last step get a decent internet connection.
FTTC is here fine yuhuuu, I ordered on the 21st March with 1&1.
Not activated yet. Canceled 1&1, they told me no lines are available, monkeys.
Nuts mode activated (COVID and no Internet at home is not fun), I requestd DSL with 3 others company (Vodafone, Telekom and MNet) and will see...
Telekom told me they habe a problem with the 250MB I ordered, but they can offer me a 16MB line  :-DD
No feedback yet from Vodafone or MNet.

Did I move in the only building in Munich where there is no Internet bandwidth available?

PLAN B: get a 5G Hotspot.  :palm:

Why this is happening in 2020 in a big and rich european city?

So sad.

/rant end

Thanks for reading and sorry....
« Last Edit: April 16, 2020, 07:29:55 am by Zucca »
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Offline BU508A

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55888 on: April 16, 2020, 07:34:38 am »
Why this is happening in 2020 in a big and rich european city?

Because of this:

“Chaos is found in greatest abundance wherever order is being sought. It always defeats order, because it is better organized.”            - Terry Pratchett -
 
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Online mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55889 on: April 16, 2020, 08:34:58 am »

Why this is happening in 2020 in a big and rich european city?


Because ISDN. We used to joke that while the French didn't get the Internet because they were busy buying porn on Minitel, the Germans didn't get high-speed Internet because DTAG had decided that ISDN was the future in 1996 and since the telco equipment has a life cycle of 30 years, there was no need to change anything. 

Actually, I had an ISDN line to home (paid by employer) for mebbe a year in 1999, when I was full time consulting at Ericsson and also had some commitments at work that meant I had to have good connectivity to work from home as well.  It was cool that connection time was practically immediate, and that connections could be established by dialing-out from work too, but the rest sucked compared to pretty much anything except POTS dialup.  A year later I got myself a 384Kbit SDSL connection, which was _excellent_. Especially since 50% of it was paid by my new employer.

Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55890 on: April 16, 2020, 08:42:17 am »
Pfft we only got FTTC here about 1.5 years ago. I'm in suburban London in a bit where a large amount of tech staff live. This was all down to NIMBYs not wanting the cabinets on the streets. And it only hits 59/15 mbits each way. They just put fibre boxes on all the poles now so we can get FTTP and I was literally just going to order it before the plague hit. Figured it was a risk getting OpenReach to do anything at the moment so leaving it be.

BTW the local morlocks tried to burn our 4G tower down unsuccessfully last night. It's still working. They already had a team out this morning replacing the cladding on it  :palm: :palm: :palm:. They're building a large cage around it as well which makes it more difficult to attack.
 
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Online Zucca

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55891 on: April 16, 2020, 08:51:52 am »
I wonder if I talk to my building administration and find someone with a brain there (statistically speaking building administration folks have the same IQ as rental cars ladies, in some jobs they hire only stupid people), can a building admin request a fast fiber connection?

Thanks for all the comment so far, I am sorry to read about your loss BD.

5G Hotspot: 75€/Month, 399€ Upfront. Spec on paper: 300D/50U MB  :-//
« Last Edit: April 16, 2020, 10:10:49 am by Zucca »
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55892 on: April 16, 2020, 08:59:11 am »
Why this is happening in 2020 in a big and rich european city?

Because of this:



 :-DD

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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55893 on: April 16, 2020, 09:01:50 am »
@zucca That's expensive for 5G. We can get 4G service. 80Gb transfer no up front for £20/month (€22). 45 down 10 up. Fine for backup :)

Edit: question for all. I need to set up a separate VLAN for my test gear including potentially a 34401A at some point (serial only). Is buying an old Cisco 2600 router with a 16 port EtherSwitch and serial port WIC classified as overkill for this?  :-DD. You can pick them up for £12 (!) now inc delivery. Just add console and serial cables + etherswitch module and sorted.
« Last Edit: April 16, 2020, 09:18:37 am by bd139 »
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55894 on: April 16, 2020, 09:15:56 am »
Host your ISP's repeater station and get a connection for free !  :P
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Offline beanflying

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55895 on: April 16, 2020, 09:18:09 am »
34461A on LAN and 34401A via a Null cable and USB dongle https://www.eevblog.com/forum/testgear/help-need-keysight-34461a-dmm-data-logging-to-xl/

Skip the Hub unless you really need it ;)
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55896 on: April 16, 2020, 09:22:38 am »
Pfft we only got FTTC here about 1.5 years ago. I'm in suburban London in a bit where a large amount of tech staff live. This was all down to NIMBYs not wanting the cabinets on the streets. And it only hits 59/15 mbits each way. They just put fibre boxes on all the poles now so we can get FTTP and I was literally just going to order it before the plague hit. Figured it was a risk getting OpenReach to do anything at the moment so leaving it be.

BTW the local morlocks tried to burn our 4G tower down unsuccessfully last night. It's still working. They already had a team out this morning replacing the cladding on it  :palm: :palm: :palm:. They're building a large cage around it as well which makes it more difficult to attack.
With virgin there is no cabinet in the street, all their gear is in manholes so you get FTTP without any of the drawbacks, maybe you should educate them and then you can get speeds like mine.  :popcorn:

BTW I reckon your 4G attack was possibly motivated by the that Anthony Steele twat who has this on his site today  :palm:
Who let Murphy in?

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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55897 on: April 16, 2020, 09:26:15 am »
Reporting it!

34461A on LAN and 34401A via a Null cable and USB dongle https://www.eevblog.com/forum/testgear/help-need-keysight-34461a-dmm-data-logging-to-xl/

Skip the Hub unless you really need it ;)

I really want it available over TCP so can use client library I already wrote and I can use the Cisco as a terminal server for it. Plus then I need a rack cabinet to put it in which can also contain some boat anchors  :popcorn: (I'm slowly consuming the living room)  :popcorn:
 
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Online bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55898 on: April 16, 2020, 09:39:23 am »
With virgin there is no cabinet in the street, all their gear is in manholes so you get FTTP without any of the drawbacks, maybe you should educate them and then you can get speeds like mine.  :popcorn:



 :popcorn:

Also traffic management, terrible terrible hardware and service.

Edit: updated

« Last Edit: April 16, 2020, 09:58:57 am by bd139 »
 
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Online mansaxel

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #55899 on: April 16, 2020, 09:50:03 am »
@zucca That's expensive for 5G. We can get 4G service. 80Gb transfer no up front for £20/month (€22). 45 down 10 up. Fine for backup :)

Edit: question for all. I need to set up a separate VLAN for my test gear including potentially a 34401A at some point (serial only). Is buying an old Cisco 2600 router with a 16 port EtherSwitch and serial port WIC classified as overkill for this?  :-DD. You can pick them up for £12 (!) now inc delivery. Just add console and serial cables + etherswitch module and sorted.

About appropriate, I'd say. The only expensive part is the 8x or 16x RS232 card, should you need it, with 68-pin SCSI connectors. Because terminal servers are still a thing. I've got a 2600 here, with a blanking plate in the big module place and some serial connector WIC. Probably should try to get a serial module for it.


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