Author Topic: Test Equipment Anonymous (TEA) group therapy thread  (Read 3465140 times)

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Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69900 on: September 19, 2020, 07:07:14 pm »
Enablers. That's what y'all are, a bunch of enablers.

I recently became a ham last year, and decided that I wanted to fix my own gear as opposed to paying someone else to do something that I can do myself. Saving money that way, ya know. So, I quickly became a boat anchor radio fan, you know, because tubes are far cooler than solid state, and things that can kill you are always cooler than those that can't. My only rule of acquisition is that it has to be something I can use.

Anyway, I decided that I needed some essential test equipment, so at first I bought an oscilloscope, gotta have one of those. New digital ones are out of my reach, so I bought a boat anchor, a Tektronix 561A. It works great, but no way to verify transmit frequency, so I needed a spectrum analyzer. After a lot of research, I decided that the best bang-for-the-buck would be an HP 8568B. So I bought one. Then found a second RF section with the cables for cheap, so I bought it too. You know, for "spares". Good idea, right?

Then I needed to align my 75A-4, and needed an RF signal generator. More research, and decided on an HP 8640B. I found one local for $200, so I bought it. Then found an HP 3300A Function Generator for $50, and bought it to. The same local guy selling the 8640B also had a bunch of Tektronix gear, so I bought a 7904 with a bunch of plug ins (and a plug in extender board!) as well as a couple of Tektronix TM504 mainframes, with more plug ins. I have a DMM, a couple of counters, an oscillator, and a few more plug ins as spares.

I thought my test equipment needs were met, until I started reading this thread.

Then I came across equipment that I had no idea existed. I suddenly realised that I needed another counter, this time with nixie tubes, because nixie tubes are cool. So I bought an HP 5245L this week and it arrived yesterday. Seems to work ok, but two of the nixie tubes will have to be replaced I think, because they're "flickering" on certain numbers. Got to get that sorted.

At the beginning of this year, all I had was the Tektronix 561A and a couple of Kenwood TS-830S' and a TS-820S. Now I have a whole wall of radios and test equipment, with more in the garage because I simply don't have anymore room in the living room to put them.

And now I have a want for a good power supply, and I have no idea why....

Yes, yes...good. Another has been assimilated.  >:D


Very nice stuff!  :-+
 
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69901 on: September 19, 2020, 07:10:56 pm »
Ok HM605 done and working. Was a complete bastard. Had to remove one of the boards to get at stuff.

Quick reminder of the crime the original owner committed. Unfortunately the two 47uF capacitors don't add up to 220uF which is what is supposed to be in there and the actual 220uF one had gone high ESR.



Patient ready for surgery



After much futzing around, the following bastards (said like Gene Hunt) were removed:



New Panasonic and Nichicon parts stuffed and board cleaned thoroughly. The underside, not pictured here, was disgusting. The gorilla who fixed it last time epoxied the new capacitors on so I had to skin them and remove them. This left a bit of a mess on the board which would have been pretty difficult to remove as the boards are FR4.



Reassembled and plumbing reconnected



Quick power up test examining one of its previous organs with the component tester.



Final tests done on it now after full reassembly and it's a winner. Traces are pin sharp. I'll calibrate it properly when the SDS1032X arrives  :-+
« Last Edit: September 19, 2020, 07:12:52 pm by bd139 »
 
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Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69902 on: September 19, 2020, 07:13:05 pm »
So what's this? It better not be a gas generator. Didn't order that.  :-//



Whatever it is it was packed very well.




A Tek 310A. Front panel looks good. No damage. But it sure is filthy. Covers look decent too, just dirty. If they clean up no painting will be required. Handle broken, no big deal.



Is it complete and unmolested on the inside? The seller wasn't too forthcoming with that info and I asked twice. I was worried it suffered from audiophool tube rape. If it was raped I was gonna go ape shit and file a complaint. Well, good news. Unmolested but absolutely filthy. What a neat design with the clamshell opening.





First order of business. A good cleaning. 2nd order. Recap (of course). Both electrolytics and it's got suspect tubulars too. They will all get replaced before there's any attempt at power up.

That is positively adorable.  :-+
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69903 on: September 19, 2020, 07:19:07 pm »
Here's a quick comparison to the Type 535A in the background. About a third the size. Mini-anchor.  :-DD

Also, it appears that the CRT is made by an outside vendor and not Tek. That's a surprise.  :o

An old gray beard with an attitude.
 
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69904 on: September 19, 2020, 07:20:02 pm »



Ooooooh nice one. I look forward to watching you work on this one. I want the transistor replacement for it (321A). Have been keeping an eye out for one for about 10 years.

« Last Edit: September 19, 2020, 07:21:43 pm by bd139 »
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69905 on: September 19, 2020, 07:23:14 pm »



Ooooooh nice one. I look forward to watching this one. I want the transistor replacement for it (321A). Have been keeping an eye out for one for about 10 years.



I almost bought a 321A about a year ago. Picked it up an looked at it. What dissuaded me was most, if not all, the transistors are trouble prone (and unobtanium) Germanium. 
An old gray beard with an attitude.
 
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69906 on: September 19, 2020, 07:26:25 pm »
The interesting bit is while that's true you can replace nearly all of them with boring old silicon ones with a bit of bias adjustment.
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69907 on: September 19, 2020, 07:28:10 pm »



Ooooooh nice one. I look forward to watching you work on this one. I want the transistor replacement for it (321A). Have been keeping an eye out for one for about 10 years.


Moving back onto Teks then, I have to say however that I do like the design of that one.
Who let Murphy in?

Brymen-Fluke-Solartron-HP-Thurlby-Heathkit-Thander-Tek-Extech-Black Star-GW-Advance-Avo-Kyoritsu-Amprobe-ITT-Robin-TTi
 

Offline Specmaster

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69908 on: September 19, 2020, 07:31:18 pm »
Right, time to go and pour myself a nice alcoholic drink and fire up discord I think. I may even get myself some tinned peach slices and ice cream to go with it, anyone feeling hungry?  :-DD
Who let Murphy in?

Brymen-Fluke-Solartron-HP-Thurlby-Heathkit-Thander-Tek-Extech-Black Star-GW-Advance-Avo-Kyoritsu-Amprobe-ITT-Robin-TTi
 
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Offline K0ELB

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69909 on: September 19, 2020, 08:06:07 pm »


Yes, yes...good. Another has been assimilated.  >:D


Very nice stuff!  :-+

Yes, I get this unshakeable feeling now. I do really need an HP 8444 Opt. 59 soon.....[attachimg=1]
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69910 on: September 19, 2020, 08:18:43 pm »
I'll calibrate it properly when the SDS1032X arrives  :-+
::)
Before I just let this go but as it keeps popping up:
SDS = Siglent Digital Scope
SDG = Siglent Digital Generator

SDG1032X !
Avid Rabid Hobbyist
 
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Offline bd139

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69911 on: September 19, 2020, 08:39:07 pm »
Whoops  :-DD

Perhaps everyone should stop coming up with fucking stupid product IDs  instead of PeniScope XR999999T-U Pro Plus Ultra 900MHZ banana SyCo generator
 
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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69912 on: September 19, 2020, 10:56:14 pm »


Yes, yes...good. Another has been assimilated.  >:D


Very nice stuff!  :-+

Yes, I get this unshakeable feeling now. I do really need an HP 8444 Opt. 59 soon.....[attachimg=1]
I get this feeling your are entering the danger zone and therefore this is appropriate:
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Offline K0ELB

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69913 on: September 19, 2020, 10:58:45 pm »
I'm honestly ok with that. SWMBO on the other hand is getting her limits pushed.  :-DD
 

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69914 on: September 19, 2020, 11:00:57 pm »
I'm honestly ok with that. SWMBO on the other hand is getting her limits pushed.  :-DD
The standard reply to that is: how many shoes or handbags have you got dearest ?
Then duck and run !
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Offline K0ELB

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69915 on: September 19, 2020, 11:23:44 pm »
I'm honestly ok with that. SWMBO on the other hand is getting her limits pushed.  :-DD
The standard reply to that is: how many shoes or handbags have you got dearest ?
Then duck and run !

Unfortunately, that won't work for me. I have a unicorn that doesn't buy useless crap like that. I bought her a Coach purse a few years ago for her birthday and she still uses it daily. AND, told me I spent too much on it! She's a saver, I'm the money waster. :-DD
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69916 on: September 19, 2020, 11:45:10 pm »
I'm honestly ok with that. SWMBO on the other hand is getting her limits pushed.  :-DD
The standard reply to that is: how many shoes or handbags have you got dearest ?
Then duck and run !

Unfortunately, that won't work for me. I have a unicorn that doesn't buy useless crap like that. I bought her a Coach purse a few years ago for her birthday and she still uses it daily. AND, told me I spent too much on it! She's a saver, I'm the money waster. :-DD

You have no choice then, you'll have to get rid of her.  :P :P :-DD :-DD
An old gray beard with an attitude.
 

Offline K0ELB

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69917 on: September 20, 2020, 12:08:30 am »


You have no choice then, you'll have to get rid of her.  :P :P :-DD :-DD

Oh no, I can't do that, she's worth keeping for other reasons....  >:D
 

Offline Cerebus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69918 on: September 20, 2020, 12:15:54 am »
I'm honestly ok with that. SWMBO on the other hand is getting her limits pushed.  :-DD
The standard reply to that is: how many shoes or handbags have you got dearest ?
Then duck and run !

Unfortunately, that won't work for me. I have a unicorn that doesn't buy useless crap like that. I bought her a Coach purse a few years ago for her birthday and she still uses it daily. AND, told me I spent too much on it! She's a saver, I'm the money waster. :-DD

So you need a better excuse then. How about "The big boys made me do it"? 

What? Why's everybody looking at me like that? Hey, it might work; you don't know until you try.
Anybody got a syringe I can use to squeeze the magic smoke back into this?
 
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69919 on: September 20, 2020, 12:18:43 am »
Get any RTX3080s?  :-DD

https://www.pcmag.com/news/how-a-bot-bought-dozens-of-rtx-3080-units-before-consumers-could-grab-them

I may make it to Discord... if the lawnmower doesn't eat me.

mnem
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How is that toe/claw of yours doing? Is it wise to be using a lawn mower given the situation  >:D :-//
Right now everything hurts, and what doesn't hurt doesn't work.  :P



Not using the mower yet; still getting it fit for use. Also found a "fix everything that goes wrong with a weedeater engine" kit on Amazon for the weedeater I bought yesterday; ~US$21: https://www.amazon.ca/gp/product/B07QB8YYSP

Sure it's all cheap Chineseum shit... but I know from experience these kits are good for a couple seasons, and the time they save makes it still a fucking bargain. Just never expected to find them on Amazon (without being marked up 300%).

mnem
*ST:TNG couch tuber time widda boi*
« Last Edit: September 20, 2020, 12:20:20 am by mnementh »
 

Offline K0ELB

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69920 on: September 20, 2020, 01:03:46 am »
I'm honestly ok with that. SWMBO on the other hand is getting her limits pushed.  :-DD
The standard reply to that is: how many shoes or handbags have you got dearest ?
Then duck and run !

Unfortunately, that won't work for me. I have a unicorn that doesn't buy useless crap like that. I bought her a Coach purse a few years ago for her birthday and she still uses it daily. AND, told me I spent too much on it! She's a saver, I'm the money waster. :-DD

So you need a better excuse then. How about "The big boys made me do it"? 

What? Why's everybody looking at me like that? Hey, it might work; you don't know until you try.

As long as it's actually getting used she doesn't have a problem with it, so far. Plus, she doesn't know the actual cash outlay for all the equipment. I've become pretty adept at package interceptions as well. Nothing irritates me more than not being able to adjust delivery to "hold for pickup". FAR easier to have something just "appear" out of nowhere thanks to a "trade".

This is how I ended up with two Collins 75A-4's, two Collins 75A-1's, a Collins 32V-2, a Central Electronics 100V and 200V, two Kenwood TS-830S's and a TS-820S, plus a Central Electronics MM-2 and Model B sideband slicer, and then onto the test equipment.... :-DD

If it doesn't weigh at least 30lbs, I don't want it.  :-DD
 
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Offline mnementh

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69921 on: September 20, 2020, 02:47:17 am »
Pfffft. Mine buys me meters and oscilloscopes. Now THAT is a unicorn.  >:D

mnem
Oh... and RC transmitters... and little whirry flying things... and expensive video cards... and... pretty much all those things I'd never spend the money on myself.
 

Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69922 on: September 20, 2020, 04:38:05 am »
Just before going to bed gave the front panel a good cleaning. Results speak for themselves.  :-+

Tomorrow tackle the inside.

Edit....the covers also cleaned up nicely with just a few scratches. No painting required.

« Last Edit: September 20, 2020, 04:42:13 am by med6753 »
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Offline 0culus

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69923 on: September 20, 2020, 04:43:18 am »
Looks great!

I received my Arrow dual band yagi today...got my HT programmed with the right VFO settings for several FM birds so now I'm ready to attempt some QSOs next time I get some good passes (hopefully maybe the ISS tomorrow evening).
 
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Online med6753

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Re: Test Equipment Anonymous (TEA) group therapy thread
« Reply #69924 on: September 20, 2020, 09:12:01 am »
I was looking over the circuit for the Type 310A and I noticed something unusual in the -150V reference circuit. C601 consists of three individual dual 15uf cans in parallel for a total effective capacitance of 90uf. This was probably done to achieve very low ESR. As I see it my choices for replacement could be 3/33uf, 2/47uf, or 1/100uf. Given that modern capacitors tend have very low ESR I could probably get away with 1/100uf but I think best compromise would be 2/47uf. What does the group think? A single 100uf or two 47uf?

« Last Edit: September 20, 2020, 09:24:41 am by med6753 »
An old gray beard with an attitude.
 


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