Re: Paper Used in Older Tek Manuals
re: multiple copies, yeah Dave, it can get pretty bad pretty quick! My wife has an easy solution. I can have as many manuals as I can fit in one double drawer file cabinet. :-)
For my part, sometimes I do have two copies - these days, usually a printed from electronic version in a three-ring binder. This is my "scratch and dent" version. I mark it up, leave it on the bench, get it dirty, etc. Then I have a "real" factory manual that I try to keep nice.
Jeff, talking about those comb binder installation tools, I think I saw a couple of those out at the local State Property Redistribution Warehouse a couple of weeks ago. I didn't pay too much attention, but now I'm starting to wonder if I should go grab them.
Those spiral or comb style or whatever they're supposed to be called are kind of snazzy.
Keith
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Re: Paper Used in Older Tek Manuals
Why would one want multiple paper copies of a manual? I copy pages (mostly schematics) when I want to annotate them while troubleshooting, but I have eight file cabinet drawers of manuals. Having extra copies of them would be untenable.
The few non-original manuals that I have (mostly from Artek manuals) are bound with comb bindings. Three-ring binders take up too much space; many of the HP manuals that I have are huge (the manual set for the HP 8566B comes to mind).
DaveD
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On Jul 26, 2021, at 18:06, Jeff Dutky <jeff.dutky@...> wrote:
?Also, a number of my Tek manuals, including the one that I just printed out from a PDF, were punched for both comb binding and three ring binding. Most of the manuals that I have with three-ring holes punched are BIG (e.g. the service manuals for the 475 and 2236). For the thinner manuals I can see where you might want to keep several of them in a big D-ring binder, but for the thick ones I don't see how that is practical. Does anyone know what the intent of this was?
-- Jeff Dutky
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Re: Paper Used in Older Tek Manuals
Remove the comb and put it in a 3 ring binder? I've seen manuals from other manufacturers where they show a picture of what the manual will look like but when you get it it's actually in a 3 ring binder.
Vince.
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On 07/26/2021 06:06 PM, Jeff Dutky wrote: Also, a number of my Tek manuals, including the one that I just printed out from a PDF, were punched for both comb binding and three ring binding. Most of the manuals that I have with three-ring holes punched are BIG (e.g. the service manuals for the 475 and 2236). For the thinner manuals I can see where you might want to keep several of them in a big D-ring binder, but for the thick ones I don't see how that is practical. Does anyone know what the intent of this was?
-- Jeff Dutky
--
Michigan VHF Corporation -- nobucks dot net
K8ZW -
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Re: Paper Used in Older Tek Manuals
Also, a number of my Tek manuals, including the one that I just printed out from a PDF, were punched for both comb binding and three ring binding. Most of the manuals that I have with three-ring holes punched are BIG (e.g. the service manuals for the 475 and 2236). For the thinner manuals I can see where you might want to keep several of them in a big D-ring binder, but for the thick ones I don't see how that is practical. Does anyone know what the intent of this was?
-- Jeff Dutky
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Re: Paper Used in Older Tek Manuals
I have no argument with what you're trying. Go for it!
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Hi Folks,
Has anyone compiled a list of the electrolytic caps for the TDS540? I¡¯d rather not pull mine apart until I have the parts in hand.
Thanks,
Stefan
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Re: Couple of 576s available on allsurplus auction
Hi Paul,
I didn¡¯t bid, but I sure did consider going over to Tuscaloosa to get those three 575 at $10 each.
:-)
FWIW, I see yet another 576 up there now - this one is in Vegas. Ends tomorrow afternoon. Currently no bids and they want $100
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I have worked on several SG503;s and a common problem causing dropouts is failed solder joints on the range switch to he board that is right-angle to the main board. But re-doing these requires unsoldering that board from the main board.
--
Bob Haas
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Re: 5642 rectifier tubes in a Tek 535: Replace or swap for silicone?
Dom,
I have used 2CL2H diodes to replace 5642s. The are higher rating than some others that can be used. I got mine off fleabay. If you replace some of the 5642s, the Si diodes would be in the cathode circuit as this has the highest current in the high voltage circuit. The Si diodes work fine and are very fast switching 12kV types.
Mark
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Re: Couple of 576s available on allsurplus auction
Did anyone here get that? The total ending price (with buyers premium) turned
out to be $406.43, which was a really great deal.
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On Thu, Jul 08, 2021 at 01:09:55PM -0700, Chris Wilkson via groups.io wrote: The way I read it is a single lot...2 units for one money.
But it really isn't very clear.
Fabulous price (currently)!
One early unit - SN B071082
One late unit - SN B315353
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows
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Re: WTB: Case ring for 466
I've used (successfully) the tek 335 and 305 feet. Note Jeff has a direct site too, pricing may be bit better: search -
www.n0dy.com
Ben
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Re: 5642 rectifier tubes in a Tek 535: Replace or swap for silicone?
Dominic:
How about the following as a possible source:
(10) diodes for under US$12.00. Claimed to be equivalent to Tek 152-0408-00.
I have no affiliation with the seller.
Mike D. N4MWP
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On 7/26/21 7:10 AM, Dominic O'Kelly wrote: Photos attached for reference:
/g/TekScopes/album?id=266461
From the looks of it- five new 5642 tubes will cost me $40 USD including postage, whereas five NTE-518 diodes will be almost exactly the same price.
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Re: 5642 rectifier tubes in a Tek 535: Replace or swap for silicone?
Photos attached for reference: /g/TekScopes/album?id=266461From the looks of it- five new 5642 tubes will cost me $40 USD including postage, whereas five NTE-518 diodes will be almost exactly the same price.
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5642 rectifier tubes in a Tek 535: Replace or swap for silicone?
Hi Everyone,
My name's Dom- long time listener first time caller. I've visited Groups.io a few times after searching for old Tek scope info- So I'm glad to finally be interaction with you all!
I have two old Tek scopes- a 535A and a 545B. The 545 is up and running, albeit with a few problems but the 535 is right at the start of the restoration process. It's not in the best condition- I saved it from the scrap heap after its previous owner passed away. I'd hate to see it destroyed.
But one question I'd like to run by the hive mind is about the 5642 rectifier tubes. They're all in pretty poor condition- some of them have actually corroded off their leads. So given I need to replace them anyway perhaps upgrading to a silicone diode could be wise?
I've seen other suggestions online that the NTE-517 of NTE-518 is a good substitute. Has anyone else had luck with this?
I'll attach some photos in my bio- you'll see the Sprague paper oil caps have leaked so they'll have to be replaced too- and the HV section cleaned.
Thanks in advance,
Dom.
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Re: Paper Used in Older Tek Manuals
Completely (or almost) off-topic, but 20 years ago there was someone in my neighborhood disposing of a duplicator press (a cheap version of an offset press this is constructed with less precision and uses cheaper paper "plates" that can only produce a limited number of impressions before they wear out). They were only a few blocks from our house, and my housemate at the time had a trailer that might have been able to transport the press. I regret to this day that I didn't rescue that and keep it in my garage.
My wife seems relatively sanguine about my current passion, but she might have killed me if I hauled that thing home. Also, at the time, my then housemate used most of the garage for his motorcycle habit (for which he had the trailer). so maybe it's just as well. Still, might have beens.
-- Jeff Dutky
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Jeff, Zen,
Thanks for your replies.
Theres no real issue with the things being ¡°within spec¡±. Tek stuff does that! I recently repaired the display on a 1502A that had been sitting at work for 5 years U/S and then 10 more years in my shed before I ¡°got round to it¡±. Once it was working, I started to perform the performance tests. First test was - check the 12V supply. Measured 11.998 (with a DVM at least that good). After three or four more steps like that, I lost interest in doing the rest.
But I digress¡
The question I am pursuing is not ¡°are your units in spec?¡±, but ¡°do your units cut out at the extreme low (as in - physical knob rotation) ends of the 5 and 10MHz ranges?¡±.
I have three units. I don¡¯t know what numbers correspond to ¡°late¡±, but two of my units (B051¡ and B067¡) do cut out, whereas B066¡ keeps happily going all the way.
In each case, we¡¯ll below the ¡°specified¡± LF limit, but I am simply curious (anal?) :-)
Roman
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Re: Paper Used in Older Tek Manuals
Greetings,
I too agree with wanting to make a quality job of it. I confess I also have a background in offset printer and bindery. I have two Ibico comb punches, a paper drill and a corner rounder. Whether I¡¯m making a manual for myself or a report for work or a side job I enjoy making a professional looking manual.
Like others I have also used the Ibico machines to easily replace damaged combs on my older Tektronix manuals.
It might not be a silly as it sounds. I have used my printing experience to help clients and my day job define printing specifications for manuals and documents including identifying proper Pantone color numbers.
I may also be OCD - I just can¡¯t help it! ;-)
Ken
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On 25Jul, 2021, at 7:18 PM, Michael W. Lynch via groups.io <mlynch003@...> wrote:
Jeff,
Nothing wrong with doing a good job. My late wife worked in a bindery, where they built Courthouse record books from scratch. The skill, precision and quality of materials that it takes to build a book that must last for 100+ years is amazing. I still run a business that she founded, selling such books. I appreciate your point of view.
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Michael Lynch
Dardanelle, AR
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Re: Paper Used in Older Tek Manuals
Jeff,
Nothing wrong with doing a good job. My late wife worked in a bindery, where they built Courthouse record books from scratch. The skill, precision and quality of materials that it takes to build a book that must last for 100+ years is amazing. I still run a business that she founded, selling such books. I appreciate your point of view.
--
Michael Lynch
Dardanelle, AR
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Re: WTB: Case ring for 466
I have used Jeff's feet and can vouch for the quality of the 3D printing.
--
Michael Lynch
Dardanelle, AR
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Re: Paper Used in Older Tek Manuals
rick,
maybe I am a little OCD about this, but I also once worked in a print shop as a typesetter, back when such things were still things. Producing good looking printed and bound materials still gives me a thrill. If I can do a good job of this without breaking the bank, then I feel like I should.
-- Jeff Dutky
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Bob Haas
Mike Dinolfo
Dominic O'Kelly
Michael W. Lynch