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.
--
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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Re: WTB: Case ring for 466
I will add my endorsement here as well. I recently bought four sets from Jeff (our own Jeff Davis). They are excellent, 3D-printed replacements.
Cheers,
Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
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On 7/25/2021 17:19, Jeff Dutky wrote: Bruce,
The cord wrap feet can be had easily enough from n0dy Jeff on eBay, $27.30 for as set of four (he doesn't list the 466, but it clearly uses the same feet as the 465 and 475). He used to sell on Amazon, but I can't seem to find his listing there now. I recommend n0dy Jeff's cord-wrap feet replacement at every opportunity as I am a happy, repeat customer.
I have a rear bezel from a 475A parts mule that is also part # 426-0970-00 and should fit the 466. It has a crack at one corner that has been repaired with epoxy, but is otherwise in good condition. I would be willing to part with it for a nominal fee plus shipping. Contact me off list.
-- Jeff Dutky
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Bruce Lane <kyrrin@...> added folder /6127B
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Re: WTB: Case ring for 466
Bruce,
The cord wrap feet can be had easily enough from n0dy Jeff on eBay, $27.30 for as set of four (he doesn't list the 466, but it clearly uses the same feet as the 465 and 475). He used to sell on Amazon, but I can't seem to find his listing there now. I recommend n0dy Jeff's cord-wrap feet replacement at every opportunity as I am a happy, repeat customer.
I have a rear bezel from a 475A parts mule that is also part # 426-0970-00 and should fit the 466. It has a crack at one corner that has been repaired with epoxy, but is otherwise in good condition. I would be willing to part with it for a nominal fee plus shipping. Contact me off list.
-- Jeff Dutky
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I recently got a 466 to restore. The most important mechanical part I need is the plastic rim that goes on the back of the chassis to hold the case on. In the repair manual, It's called? "FRAME SECT, CAB. :REAR" and has a part number of 426-0970-00.? The feet which also serve as cord wraps are also missing.? Does anyone have any of these to spare? Thanks,
?? Bruce Gentry, KA2IVY
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Re: TM 504 Power Module Questions
I think you got that backwards Pins 1 thru 13 (bottom) are all the same Pins 14 thru 28 (upper) are mostly custom select as per units allow. Don't forget side A and B looking from the front A is on the right B is on the left of each connector on the TM500 series.
Jeff
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Mine is an early serial number B0102xx an still well within specs.
Jeff
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Re: Paper Used in Older Tek Manuals
Dave Henderson of Artek manuals posted awhile back showing how to replace a comb binding.
DaveD
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On Jul 25, 2021, at 14:01, Dave Daniel via groups.io <kc0wjn@...> wrote:
?I bought a bunch of black and white combs and a small-capacity comb punch a while back. I used it to replace many crumbling Tektronix manual combs, as well as binding various other documents (such as Jim Williams¡¯ Linear Technology AN-47 which is ridiculously long and ridiculously useful). I have a bunch of clear front covers and black rear covers from Kinkos that I use for covers.
DaveD
On Jul 25, 2021, at 13:44, rick <rickc@...> wrote:
?Years ago (2006), I found a comb binder on ebay. It was about $112. Did not include supplies, which are easy to get.
the trade name was Ibimatic, which is a brand of Ibico.
It's handy to have. I don't know if I use it enough, but unless I want to go to my copy/print place and pay them, there's no other way.
It's also handy for disassembling an existing "book" so you can copy a page, etc. Then, when reassembling, there is no equal.
You can buy covers for your "reports" but they are not the same stock, and not Tektronix blue.
It sounds like you are pretty OCD about this.
--rick chinn
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Re: Paper Used in Older Tek Manuals
I bought a bunch of black and white combs and a small-capacity comb punch a while back. I used it to replace many crumbling Tektronix manual combs, as well as binding various other documents (such as Jim Williams¡¯ Linear Technology AN-47 which is ridiculously long and ridiculously useful). I have a bunch of clear front covers and black rear covers from Kinkos that I use for covers.
DaveD
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On Jul 25, 2021, at 13:44, rick <rickc@...> wrote:
?Years ago (2006), I found a comb binder on ebay. It was about $112. Did not include supplies, which are easy to get.
the trade name was Ibimatic, which is a brand of Ibico.
It's handy to have. I don't know if I use it enough, but unless I want to go to my copy/print place and pay them, there's no other way.
It's also handy for disassembling an existing "book" so you can copy a page, etc. Then, when reassembling, there is no equal.
You can buy covers for your "reports" but they are not the same stock, and not Tektronix blue.
It sounds like you are pretty OCD about this.
--rick chinn
|
Re: Paper Used in Older Tek Manuals
Years ago (2006), I found a comb binder on ebay. It was about $112. Did not include supplies, which are easy to get.
the trade name was Ibimatic, which is a brand of Ibico.
It's handy to have. I don't know if I use it enough, but unless I want to go to my copy/print place and pay them, there's no other way.
It's also handy for disassembling an existing "book" so you can copy a page, etc. Then, when reassembling, there is no equal.
You can buy covers for your "reports" but they are not the same stock, and not Tektronix blue.
It sounds like you are pretty OCD about this.
--rick chinn
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Re: New (old) 2247a enquiry
Thanks, that fixed it. Bit embarassing, should have read the user manual before looking at the service manual.
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Mike Dinolfo
Dominic O'Kelly
Michael W. Lynch