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Looking for a 335 CRT
Yes, a very good chance but I wont be able to deal with it for a few days. I took my wife ( of 58 years ) into the emergency room Saturday afternoon and things are up in the air right now. Her replace
Yes, a very good chance but I wont be able to deal with it for a few days. I took my wife ( of 58 years ) into the emergency room Saturday afternoon and things are up in the air right now. Her replace
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By
Bert Haskins
· #181538
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tek scopes spotted?
Yes, LEVER switches. Thanks Dave. I had a mental block.
Yes, LEVER switches. Thanks Dave. I had a mental block.
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By
Joel B Walker
· #181537
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Snubber vs safety cap in 7854.
Please include a screen shot of the schematic and of the capacitor, Jon
Please include a screen shot of the schematic and of the capacitor, Jon
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By
Jean-Paul
· #181536
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Looking for a 335 CRT
Bert, any chance I can take you up on your 335 or tube? Thanks, -S
Bert, any chance I can take you up on your 335 or tube? Thanks, -S
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By
Stefan
· #181535
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Suitcase delay line 113
On that auction place. Price seems high but maybe not to someone who really needs one ;) https://www.ebay.com/itm/Vintage-Tektronix-113-Delay-Cable-for-Type-N-4S2-Sampling-Oscilloscope-Plug-Ins/133017
On that auction place. Price seems high but maybe not to someone who really needs one ;) https://www.ebay.com/itm/Vintage-Tektronix-113-Delay-Cable-for-Type-N-4S2-Sampling-Oscilloscope-Plug-Ins/133017
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By
Charles
· #181534
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Snubber vs safety cap in 7854.
My 7854 recently started to act up and after investigation I found the +15v regulated supply was sagging to 14.2v and had some ~50kHz 20mV ripple. Probing deeper into the SMPS I further found the unre
My 7854 recently started to act up and after investigation I found the +15v regulated supply was sagging to 14.2v and had some ~50kHz 20mV ripple. Probing deeper into the SMPS I further found the unre
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By
Martin Hodge
· #181533
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tek scopes spotted?
They definitely did use them early on. I have a Type B plug in that has several of the buggers. Kinda like selenium rectifiers (the B has one of those too...) you can assume they are no good. Sean
They definitely did use them early on. I have a Type B plug in that has several of the buggers. Kinda like selenium rectifiers (the B has one of those too...) you can assume they are no good. Sean
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By
Sean Turner
· #181532
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tek scopes spotted?
Lever switches. Sent: Saturday, April 10, 2021 5:58 PM To: TekScopes@groups.io Subject: Re: [TekScopes] tek scopes spotted? Sorry, rocker switches is what came to mind. I can't think off hand the prop
Lever switches. Sent: Saturday, April 10, 2021 5:58 PM To: TekScopes@groups.io Subject: Re: [TekScopes] tek scopes spotted? Sorry, rocker switches is what came to mind. I can't think off hand the prop
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By
Dave Wise
· #181531
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tek scopes spotted?
Sorry, rocker switches is what came to mind. I can't think off hand the proper name for the type of switches on the 547. They are on both time bases. The 549 has them as well as the 544.
Sorry, rocker switches is what came to mind. I can't think off hand the proper name for the type of switches on the 547. They are on both time bases. The 549 has them as well as the 544.
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By
Joel B Walker
· #181530
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FREE TO GOOD HOME: Pulled A7 board for Tek 485 Scope
THANKS TO ALL WHO INQUIRED. THIS HAS BEEN SPOKEN FOR!
THANKS TO ALL WHO INQUIRED. THIS HAS BEEN SPOKEN FOR!
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By
k6whp
· #181529
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Looking for a 335 CRT
That’s called deflection blanking. The 321 uses that system. Dave Wise Sent: Saturday, April 10, 2021 12:52 PM To: TekScopes@groups.io Subject: Re: [TekScopes] Looking for a 335 CRT I seem to remember
That’s called deflection blanking. The 321 uses that system. Dave Wise Sent: Saturday, April 10, 2021 12:52 PM To: TekScopes@groups.io Subject: Re: [TekScopes] Looking for a 335 CRT I seem to remember
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By
Dave Wise
· #181528
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FREE TO GOOD HOME: Pulled A7 board for Tek 485 Scope
Swapped from Tek 485 scope as working when it was. Has socketed NPNs, etc. Free to good home; just reimburse me for shipping from SoCal - 92708. -- William, k6whp "A friend told me to cheer up, things
Swapped from Tek 485 scope as working when it was. Has socketed NPNs, etc. Free to good home; just reimburse me for shipping from SoCal - 92708. -- William, k6whp "A friend told me to cheer up, things
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By
k6whp
· #181527
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7CT1N plugin boards
Hi Harvey, I don't have a [5]CT1N - yet - just a low priority slot on the wish-list. If you have boards left after distributing to everyone with more concrete use for them, please email me your addres
Hi Harvey, I don't have a [5]CT1N - yet - just a low priority slot on the wish-list. If you have boards left after distributing to everyone with more concrete use for them, please email me your addres
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By
Paul McClay
· #181525
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List the Tek Factory Assembly Errors You Have Found
I've had a few experiences like this, here are just a few that come to mind: 1. I picked up a P6045 active FET probe in non working but otherwise as-new condition. It even had an "Instrument Checked"
I've had a few experiences like this, here are just a few that come to mind: 1. I picked up a P6045 active FET probe in non working but otherwise as-new condition. It even had an "Instrument Checked"
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By
Morris Odell
· #181524
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RF noise on ground
When I bought my 465B, I had it shipped to me at work, and, of course, I checked it out there and found it to be perfect. When I brought it home, I discovered noise on the most sensitive setting that
When I bought my 465B, I had it shipped to me at work, and, of course, I checked it out there and found it to be perfect. When I brought it home, I discovered noise on the most sensitive setting that
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By
Jim Adney
· #181523
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tek scopes spotted?
I find myself seeing TEK equipment in some of the strangest places on TV. Now I need to make notes!
I find myself seeing TEK equipment in some of the strangest places on TV. Now I need to make notes!
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By
Mlynch001
· #181522
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tek scopes spotted?
The scope in the 3rd photo on that page is a Tek 564B/MOD121N (auto erase.) The fact that there are 5 knobs in the upper right corner give away the auto erase feature. However, this an unusual 564B: T
The scope in the 3rd photo on that page is a Tek 564B/MOD121N (auto erase.) The fact that there are 5 knobs in the upper right corner give away the auto erase feature. However, this an unusual 564B: T
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By
Jim Adney
· #181521
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RF noise on ground
Wasn't that Nikola Tesla's idea of broadcasting power, rather than sending it through cables ? Saw a TV prog on Wardenclyffe, Shoreham NY. I bet if that thing had worked it would have zapped a few fro
Wasn't that Nikola Tesla's idea of broadcasting power, rather than sending it through cables ? Saw a TV prog on Wardenclyffe, Shoreham NY. I bet if that thing had worked it would have zapped a few fro
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By
Tim Phillips
· #181520
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Looking for a 335 CRT
There are horizontal glass rods that support the vertical deflection plates; one of these rods is cracked and the plate is slightly shifted. If there is a blanking plate, it must be connected at the n
There are horizontal glass rods that support the vertical deflection plates; one of these rods is cracked and the plate is slightly shifted. If there is a blanking plate, it must be connected at the n
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By
Stefan
· #181519
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465 Missing a Few Components
I’m not sure they are. Also, mine is a European made model. With my limited experience, I noticed that, given the same model, European made ones are, usually, closer to later US made ones. Probably be
I’m not sure they are. Also, mine is a European made model. With my limited experience, I noticed that, given the same model, European made ones are, usually, closer to later US made ones. Probably be
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By
Stephen
· #181518
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