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OT Anyone with spare UAA1016B
On Tue, 7 Jun 2022, Jim Ford wrote: First of all, GRRR! on that quoted message formatting. Guys, it is impossible to read that brain salad... As of UAA1016B, just $.25 -- could it be replaced with cur
On Tue, 7 Jun 2022, Jim Ford wrote: First of all, GRRR! on that quoted message formatting. Guys, it is impossible to read that brain salad... As of UAA1016B, just $.25 -- could it be replaced with cur
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By
Sergey Kubushyn
· #193883
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Tek 2712 Adjustment
Yes. --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * *****
Yes. --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * *****
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Sergey Kubushyn
· #191921
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Tek 2712 Adjustment
ZERO. --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * ****
ZERO. --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * ****
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By
Sergey Kubushyn
· #191914
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Tektronix 067-1338-0x calibration step generator for SD-series sampling heads
That "Add to basket" on UK site is a charm :) --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < >
That "Add to basket" on UK site is a charm :) --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < >
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By
Sergey Kubushyn
· #186491
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Another 494AP VR mystery
Of the 3 494AP instruments I'm working on right now two have VRs marked as 644-0776-01. I don't know how those made it into those units and those two are quite different ones -- one is early numbers (
Of the 3 494AP instruments I'm working on right now two have VRs marked as 644-0776-01. I don't know how those made it into those units and those two are quite different ones -- one is early numbers (
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By
Sergey Kubushyn
· #184977
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Tek 494AP VR board mystery
BTW, I forgot to mention that actual board matches schematic exactly. Don't know about those inductance values -- have absolutely no interest desoldering and measuring those -- but actual parts are AL
BTW, I forgot to mention that actual board matches schematic exactly. Don't know about those inductance values -- have absolutely no interest desoldering and measuring those -- but actual parts are AL
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By
Sergey Kubushyn
· #184584
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Tek 494AP VR board mystery
I doubt that IP protection guess. Back then they didn't have CADs and those designs were not just computer files. It was a bunch of paper drawings, mylar tape PCB designs and so on. Not even starting
I doubt that IP protection guess. Back then they didn't have CADs and those designs were not just computer files. It was a bunch of paper drawings, mylar tape PCB designs and so on. Not even starting
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By
Sergey Kubushyn
· #184583
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Tek 494AP VR board mystery
On Thu, 15 Jul 2021, Ed Breya via groups.io wrote: Eh, there is NO logic needed. Wired OR is done without any diodes using OC/OD outputs. And it is done like that at the very bottom of the schematic.
On Thu, 15 Jul 2021, Ed Breya via groups.io wrote: Eh, there is NO logic needed. Wired OR is done without any diodes using OC/OD outputs. And it is done like that at the very bottom of the schematic.
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By
Sergey Kubushyn
· #184581
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Tek 494AP VR board mystery
On Thu, 15 Jul 2021, Ed Breya via groups.io wrote: It is pure logic, ON/OFF. 'LS145 pin active (low), +15V forward bias, pass diodes in full conductance, those shorting to ground reverse biased i.e. O
On Thu, 15 Jul 2021, Ed Breya via groups.io wrote: It is pure logic, ON/OFF. 'LS145 pin active (low), +15V forward bias, pass diodes in full conductance, those shorting to ground reverse biased i.e. O
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By
Sergey Kubushyn
· #184577
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Tek 494AP VR board mystery
Can somebody come out with any reason for the CR3068 diode on VR 2nd Filter Select board (left bottom corner on the schematic on page 185 of 494A/AP Vol.2 Service Manual)? There are 5 filters there, e
Can somebody come out with any reason for the CR3068 diode on VR 2nd Filter Select board (left bottom corner on the schematic on page 185 of 494A/AP Vol.2 Service Manual)? There are 5 filters there, e
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By
Sergey Kubushyn
· #184568
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clean up grey foam residue
On Sun, 27 Jun 2021, Richard Knoppow wrote: The problem with that "special cleaner" is that it is nothing but pure acetone (just read their MSDS). First of all, there is no reason to buy it in overpri
On Sun, 27 Jun 2021, Richard Knoppow wrote: The problem with that "special cleaner" is that it is nothing but pure acetone (just read their MSDS). First of all, there is no reason to buy it in overpri
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By
Sergey Kubushyn
· #184082
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6DJ8 substitute idea - reverse engineering
On Sun, 20 Jun 2021, Keith wrote: Russian 6N23P is a direct equivalent of 6DJ8. There are many thousands of those available from eBay (519 hits for 6N23P as of right now with some of those for lots of
On Sun, 20 Jun 2021, Keith wrote: Russian 6N23P is a direct equivalent of 6DJ8. There are many thousands of those available from eBay (519 hits for 6N23P as of right now with some of those for lots of
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By
Sergey Kubushyn
· #183916
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Tektronix 492BP
On Fri, 22 Jan 2021, Mike Yepes wrote: Does it switch to frequency bands higher than 5? Bands for use with external mixers start with Band 6. > Hi, can Anyone help how to get higher frequency displaye
On Fri, 22 Jan 2021, Mike Yepes wrote: Does it switch to frequency bands higher than 5? Bands for use with external mixers start with Band 6. > Hi, can Anyone help how to get higher frequency displaye
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By
Sergey Kubushyn
· #176939
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Tek 7934
On Tue, 20 Oct 2020, Tom Lee wrote: There is a HUGE difference -- 7934 is a 500MHz _STORAGE_ scope, the best they ever made. It is rare as hens' teeth and it worth its price. However it might be not w
On Tue, 20 Oct 2020, Tom Lee wrote: There is a HUGE difference -- 7934 is a 500MHz _STORAGE_ scope, the best they ever made. It is rare as hens' teeth and it worth its price. However it might be not w
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By
Sergey Kubushyn
· #172485
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Obsolete Motorola IC
On Tue, 13 Oct 2020, - wrote: https://www.datasheetarchive.com/pdf/download.php?id=24af7b4875fe916a340b52c0b1a28a25290338&type=M&term=MC1217 Semiconductor Chips Data Book 1976 Original Datasheet: http
On Tue, 13 Oct 2020, - wrote: https://www.datasheetarchive.com/pdf/download.php?id=24af7b4875fe916a340b52c0b1a28a25290338&type=M&term=MC1217 Semiconductor Chips Data Book 1976 Original Datasheet: http
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Sergey Kubushyn
· #172299
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Tektronix CG5010 & CG5011 Rotary Encoder 260-2500-00
On Sat, 3 Oct 2020, David Sidrane wrote: I would also want to purchase one. Where is it supposed to be ordered from? Who sells those? > Hi Chris, > > Did you ever order any of the 260-2500-00? I would
On Sat, 3 Oct 2020, David Sidrane wrote: I would also want to purchase one. Where is it supposed to be ordered from? Who sells those? > Hi Chris, > > Did you ever order any of the 260-2500-00? I would
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By
Sergey Kubushyn
· #172019
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7T11 and 7S11 are gone
Got the payment so it is no longer available. --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < >
Got the payment so it is no longer available. --- ****************************************************************** * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < >
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By
Sergey Kubushyn
· #168517
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7T11 and 7S11
Gentlemen: I'm going through all my stuff I accumulated in 20 years or so, trying to make some order, throw away whatever I don't need and salvaging whatever I can that might be useful. I have one 7S1
Gentlemen: I'm going through all my stuff I accumulated in 20 years or so, trying to make some order, throw away whatever I don't need and salvaging whatever I can that might be useful. I have one 7S1
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By
Sergey Kubushyn
· #168469
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Old ioTech software...
On Sun, 19 Apr 2020, Maurice Smulders wrote: Got it, thanks! > It's now on KO4BB's website. > > - Maurice > > On Sun, Apr 19, 2020 at 5:17 AM A Rhodes <rhodes@...> wrote: > >> Once you get the
On Sun, 19 Apr 2020, Maurice Smulders wrote: Got it, thanks! > It's now on KO4BB's website. > > - Maurice > > On Sun, Apr 19, 2020 at 5:17 AM A Rhodes <rhodes@...> wrote: > >> Once you get the
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By
Sergey Kubushyn
· #166141
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Old ioTech software...
On Sun, 19 Apr 2020, Maurice Smulders wrote: OK, thanks. Will wait for it to become available for download. > It's now on KO4BB's website. > > - Maurice > > On Sun, Apr 19, 2020 at 5:17 AM A Rhodes <r
On Sun, 19 Apr 2020, Maurice Smulders wrote: OK, thanks. Will wait for it to become available for download. > It's now on KO4BB's website. > > - Maurice > > On Sun, Apr 19, 2020 at 5:17 AM A Rhodes <r
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By
Sergey Kubushyn
· #166138
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