Date   
Re: Experience with AliExpress for connectors

Jerry Massengale <jmassen418@...>
 

I only ordered one thing from them and was not happy


On Wed, Jul 19, 2017 at 10:01 AM, 'David C. Partridge'
@perdrix [TekScopes] <TekScopes@...> wrote:



I want to buy two Lemo connectors FGJ.2B.306.CLLD72Z

Problem is that Lemo want GBP19.24 each plus tax at 20% and have an MOV of
GBP100 plus tax (or a surcharge of GBP25 plus tax) with shipping on top.

I saw this page on AliExpress:

<https://www.aliexpress.com/item/LEMO-connector-FGJ-2B-2-
3-4-5-6-7-8-10-12-1
4-16-18/32802964953.html?spm=2114.search0104.8.60.UYHEap>

Offering them at a lower price than Lemo and seemingly offering small
orders
and free shipping.

Are they OK to deal with or would I be throwing my money down a black hole?

Dave



[Non-text portions of this message have been removed]

Re: 11402 in tick mode

Vince Vielhaber
 

There is life in it again. At some point the fan was replaced. When they put it back together they pinched the leads between the fan body and the chassis, hard enough to go right thru the insulation. Fixed that, powered it up again and away it went.

Thanks for the ideas!
Vince - hoping yahoo posts this in a reasonable period of time...

On 07/19/2017 04:54 PM, Artek Manuals manuals@... [TekScopes] wrote:
Also check all the cables are seated properly at the connectors a Switch
mode supply without a load due to a loose connector might go into tick
mode as well
Dave
manuals@...

On 7/19/2017 4:31 PM, Vince Vielhaber vev@... [TekScopes] wrote:


I just had an 11402 shipped to me that worked before it was shipped. It
was packed well and there was no damage to the box. It just doesn't
work. The power supply is in tick mode - I can hear it. I can't smell
any signs of a loss of magic smoke. Any suggestions where to look?

Thanks!
Vince - hoping yahoo posts this in a reasonable period of time...
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com

Interesting Tek Training stuff avaiable

 

Trying to re-arrange my lab, I found all kinds of Tek bits crammed into every available space on shelves. Here's what I found that I'd like to be rid of:

1. Tek QuickStart 2232/2224 Digitizing Oscilloscope Training Package. Big blue plastic box with VHS tape, two manuals, and a battery operated training board. Looks complete.

2. Tek QuickStart 11402A/11403 Digitizing Osciloscope Training Package. Big blue plastic box with 2 books, and line powered training board, place for a tape, but none in it.

3. The 11201A Digitizing Oscilloscope. Large mint binder with operating, service (no schematics) and parts info.


4. 11A52 Two Channel Amplifier operation manual.


5. 11A71 Amplifier, tagged good, 11A72 amplifier tagged bad, no details.


I no longer have any 11K gear, so this all should go. email me with any offers, for part or all to: walter2 -at- sphere.bc.ca off list, let's not annoy everybody. The TP's are bulky, so keep that in mind for shipping. LOTS of 7K plug ins too, way too many to ever use, welcome to stop by and browse if you are visiting here in BC. Still tons of free goodies left over from the last stuff day.



all the best,
walter

sphere research corp.

http://www.sphere.bc.ca/test/index.html

Re: 11402 in tick mode

ArtekManuals
 

Also check all the cables are seated properly at the connectors a Switch
mode supply without a load due to a loose connector might go into tick
mode as well
Dave
manuals@...

On 7/19/2017 4:31 PM, Vince Vielhaber vev@... [TekScopes] wrote:


I just had an 11402 shipped to me that worked before it was shipped. It
was packed well and there was no damage to the box. It just doesn't
work. The power supply is in tick mode - I can hear it. I can't smell
any signs of a loss of magic smoke. Any suggestions where to look?

Thanks!
Vince - hoping yahoo posts this in a reasonable period of time...
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com

--
Dave
Manuals@...
www.ArtekManuals.com

Re: 11402 in tick mode

ArtekManuals
 

Vince
1) Electrolytics and tants in the power supply
2) Even though it was boxed well you want to pull the covers (going to
have to do that anyway). Possible something was "jarred loose" in
transit (an errant screw that was floating around to begin with) and is
now shorting internally
Dave
manuals@...

On 7/19/2017 4:31 PM, Vince Vielhaber vev@... [TekScopes] wrote:


I just had an 11402 shipped to me that worked before it was shipped. It
was packed well and there was no damage to the box. It just doesn't
work. The power supply is in tick mode - I can hear it. I can't smell
any signs of a loss of magic smoke. Any suggestions where to look?

Thanks!
Vince - hoping yahoo posts this in a reasonable period of time...
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com

--
Dave
Manuals@...
www.ArtekManuals.com

11402 in tick mode

Vince Vielhaber
 

I just had an 11402 shipped to me that worked before it was shipped. It was packed well and there was no damage to the box. It just doesn't work. The power supply is in tick mode - I can hear it. I can't smell any signs of a loss of magic smoke. Any suggestions where to look?

Thanks!
Vince - hoping yahoo posts this in a reasonable period of time...
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com

Re: CRT Tube (in good shape) for Tek464 / Tek466

Fabio Trevisan
 

Hello Håkan,
Thanks for the tip on the CRT p/n replacement and the kit P/N.
My 464 is S/N B132xxx (don't recall the last digits right now) so I suppose
that either the 154-0749-00 or 154-0750-00 will serve.

My guess is that the 0749 is nothing else than a 0750 that wasn't good
enough to pass the 466 writing speed test.

I wonder what's in this kit... I can't refrain from thinking, even hoping,
that someone could have attempted to install a 466 CRT on my 464 and it may
be missing some retrofitting, and maybe that be the cause for the weak
trace and blooming.
But I doubt. All the symptoms for a worn-out cathode are there.
double-peaking, poor focus tracking (with Intensity), Intensity dependent
astigmatism... Everything that leads to conclusion that the cathode is
emitting from its outer ring, instead of from its sweet center spot.

KRgrds,

Fabio


2017-07-18 19:21 GMT-03:00 hahi@... [TekScopes] <
TekScopes@...>:



Please be aware that the 464 and 466 do not have the same CRT.
Actually they could use the same CRT if they are within the same S/N range
i.e either
below or above B080000. The recommended replacement for all 4x6 CRT's is
154-0750-00.
If the scope is below B080000 some minor modifications must be done. The
kit P/N is 050-0762-14.

/Håkan

[Non-text portions of this message have been removed]



[Non-text portions of this message have been removed]

Re: For sale UK Tek7854 plus plugins

chris_leyson@...
 

Hi guys, quick update scopes and plug-ins have all gone. Needed a quick sale.

Re: Scope face focus anomaly

Fabio Trevisan
 

Hello Gary,
The new ones, however, don't deliver the same pleasure and fun to use, and
they're not as interactive and intuitive to use (after some practice with
the old ones, of course).
A good reading that will help you understand better how these multitude of
electrodes play their magic inside the CRT is one of Tek's "Concepts
Series" books, on CRTs, that you can find on TekWiki website:

http://w140.com/tekwiki/images/6/62/062-0852-01.pdf

It has a very good explanation on how the voltages translate into electric
fields that divert the electron beam or "shape" it, by acting like
electrostatic lenses.

Rgrds,

Fabio

2017-07-19 9:17 GMT-03:00 Gary Robert Bosworth @grbosworth
[TekScopes] <TekScopes@...>:



Thank you Fabio. I am developing a list of things to look into. I know so
little about these old analog CRTs. The modern digital designs do not
suffer the headaches.

Gary

On Tue, Jul 18, 2017 at 9:59 PM, Fabio Trevisan fabio.tr3visan@...
[TekScopes] <TekScopes@...> wrote:



Hello Gary,
Not specifically related to your 7514, I want to share 2 of my last (and
pretty much all) experiences with my 464 (focus related)....
As you've seen from some of the other folks answers focus seem to be
influenced by quite a few of the inner elements (or, let's call them
intermediate anodes) that are not directly related to the focus electrode
itself.
My first experience was when my 464 was still recent on my hands and it
had
a nasty overall focus.
It wouldn't focus well over the entire screen.
It had, back then, a major vertical high freq response imbalance (too
much
high freq gain, or too low lo-freq gain, which was my main concern).
As the troubleshooting evolved I found an opened (burnt) resistor on the
vertical output amplifier's biasing.
As soon as I replaced the resistor, I noticed a great improvement in
focus
(after I readjusted a number of trimpots that were set wrong partially
compensating the bias imbalance).

Lesson learnt (as I understood):
Focus is affected by inadequate balance between voltages of symmetrically
opposed electrodes, such as the vertical or horizontal plates, so, the
average of the varying voltages at the upper and lower plates must remain
constant and at a value that is correct in relation to the voltages of
the
preceding and next electrodes in the electron beam's path.
If the upper plate is at an average level of, say, 60V (example), and if
the lower is at 40 (average being 50) and if 50 is the right voltage for
the vert plates, overall the focus may be right, but as the trace moves
up
or down, the average between them doesn't remain constant and the focus
becomes modulated by the vertical signal.
A defect on the vertical amplifier that may be causing an imbalance of
such
top and bottom plates'voltages, may affect adversely the focus in the
up-down direction.

My second experience was after I dismantled the oscilloscope to replace
its
power supply caps and, in the process, I may have dislodged the
"geometry"
trimppt from its correct adjustment.
As I just powered up the scope after reassembly, the focus was once again
awful, but luckily I also noticed that waveforms were distorted (Sort of
pin-cushion distotyion).
As soon as I properly re-adjusted the geometry trimpot, focus improved
again back to what it was.

Brgrds,

Fabio

On Jul 18, 2017 11:12 PM, "Gary Robert Bosworth @grbosworth
[TekScopes]" <TekScopes@...> wrote:

Thanx Stephen. I will see if there is a shield adjustment. I know very
little about CRTs.

Gary

On Tue, Jul 18, 2017 at 2:56 PM, sbell@... [TekScopes] <
TekScopes@...> wrote:



The setting of the CRT's vertical shield voltage seems to have a
considerable effect on the ability to obtain a well focused spot. I am
not
familiar with the 7514 but if it has a adjustment for this voltage you
could try tweaking it to see if it results in improved focus.
On my 7834 I was unable to obtain a good spot with the shield voltage
adjustment procedure detailed in the manual so after going through the
complete CRT set-up procedure I had to further tweak the shield voltage
to
obtain best overall focus.

Stephen

[Non-text portions of this message have been removed]


--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247 <(310)%20317-2247> <(310)%20317-2247>
<(310)%20317-2247>

[Non-text portions of this message have been removed]




--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247 <(310)%20317-2247>

[Non-text portions of this message have been removed]


Re: Experience with AliExpress for connectors

 

ons. 19. jul. 2017 kl. 17.01 skrev 'David C. Partridge'
@perdrix [TekScopes] <TekScopes@...>:

I want to buy two Lemo connectors FGJ.2B.306.CLLD72Z

Problem is that Lemo want GBP19.24 each plus tax at 20% and have an MOV of
GBP100 plus tax (or a surcharge of GBP25 plus tax) with shipping on top.

I saw this page on AliExpress:

<
https://www.aliexpress.com/item/LEMO-connector-FGJ-2B-2-3-4-5-6-7-8-10-12-1
4-16-18/32802964953.html?spm=2114.search0104.8.60.UYHEap
<https://www.aliexpress.com/item/LEMO-connector-FGJ-2B-2-3-4-5-6-7-8-10-12-14-16-18/32802964953.html?spm=2114.search0104.8.60.UYHEap>
Offering them at a lower price than Lemo and seemingly offering small
orders
and free shipping.

Are they OK to deal with or would I be throwing my money down a black hole?

Dave

hi david,
Pay with kredit card, then you are safe,youncan get an refund from you bank.
helge



------------------------------------
Posted by: "David C. Partridge" <@perdrix>
------------------------------------


------------------------------------

Yahoo Groups Links



Experience with AliExpress for connectors

 

I want to buy two Lemo connectors FGJ.2B.306.CLLD72Z

Problem is that Lemo want GBP19.24 each plus tax at 20% and have an MOV of
GBP100 plus tax (or a surcharge of GBP25 plus tax) with shipping on top.

I saw this page on AliExpress:

<https://www.aliexpress.com/item/LEMO-connector-FGJ-2B-2-3-4-5-6-7-8-10-12-1
4-16-18/32802964953.html?spm=2114.search0104.8.60.UYHEap>

Offering them at a lower price than Lemo and seemingly offering small orders
and free shipping.

Are they OK to deal with or would I be throwing my money down a black hole?

Dave

Re: Scope face focus anomaly

Gary Robert Bosworth
 

Thank you Fabio. I am developing a list of things to look into. I know so
little about these old analog CRTs. The modern digital designs do not
suffer the headaches.

Gary

On Tue, Jul 18, 2017 at 9:59 PM, Fabio Trevisan fabio.tr3visan@...
[TekScopes] <TekScopes@...> wrote:



Hello Gary,
Not specifically related to your 7514, I want to share 2 of my last (and
pretty much all) experiences with my 464 (focus related)....
As you've seen from some of the other folks answers focus seem to be
influenced by quite a few of the inner elements (or, let's call them
intermediate anodes) that are not directly related to the focus electrode
itself.
My first experience was when my 464 was still recent on my hands and it had
a nasty overall focus.
It wouldn't focus well over the entire screen.
It had, back then, a major vertical high freq response imbalance (too much
high freq gain, or too low lo-freq gain, which was my main concern).
As the troubleshooting evolved I found an opened (burnt) resistor on the
vertical output amplifier's biasing.
As soon as I replaced the resistor, I noticed a great improvement in focus
(after I readjusted a number of trimpots that were set wrong partially
compensating the bias imbalance).

Lesson learnt (as I understood):
Focus is affected by inadequate balance between voltages of symmetrically
opposed electrodes, such as the vertical or horizontal plates, so, the
average of the varying voltages at the upper and lower plates must remain
constant and at a value that is correct in relation to the voltages of the
preceding and next electrodes in the electron beam's path.
If the upper plate is at an average level of, say, 60V (example), and if
the lower is at 40 (average being 50) and if 50 is the right voltage for
the vert plates, overall the focus may be right, but as the trace moves up
or down, the average between them doesn't remain constant and the focus
becomes modulated by the vertical signal.
A defect on the vertical amplifier that may be causing an imbalance of such
top and bottom plates'voltages, may affect adversely the focus in the
up-down direction.

My second experience was after I dismantled the oscilloscope to replace its
power supply caps and, in the process, I may have dislodged the "geometry"
trimppt from its correct adjustment.
As I just powered up the scope after reassembly, the focus was once again
awful, but luckily I also noticed that waveforms were distorted (Sort of
pin-cushion distotyion).
As soon as I properly re-adjusted the geometry trimpot, focus improved
again back to what it was.

Brgrds,

Fabio

On Jul 18, 2017 11:12 PM, "Gary Robert Bosworth @grbosworth
[TekScopes]" <TekScopes@...> wrote:

Thanx Stephen. I will see if there is a shield adjustment. I know very
little about CRTs.

Gary

On Tue, Jul 18, 2017 at 2:56 PM, sbell@... [TekScopes] <
TekScopes@...> wrote:



The setting of the CRT's vertical shield voltage seems to have a
considerable effect on the ability to obtain a well focused spot. I am
not
familiar with the 7514 but if it has a adjustment for this voltage you
could try tweaking it to see if it results in improved focus.
On my 7834 I was unable to obtain a good spot with the shield voltage
adjustment procedure detailed in the manual so after going through the
complete CRT set-up procedure I had to further tweak the shield voltage
to
obtain best overall focus.

Stephen




--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247 <(310)%20317-2247> <(310)%20317-2247>

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]




--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247

Re: Scope face focus anomaly

Fabio Trevisan
 

Hello Gary,
Not specifically related to your 7514, I want to share 2 of my last (and
pretty much all) experiences with my 464 (focus related)....
As you've seen from some of the other folks answers focus seem to be
influenced by quite a few of the inner elements (or, let's call them
intermediate anodes) that are not directly related to the focus electrode
itself.
My first experience was when my 464 was still recent on my hands and it had
a nasty overall focus.
It wouldn't focus well over the entire screen.
It had, back then, a major vertical high freq response imbalance (too much
high freq gain, or too low lo-freq gain, which was my main concern).
As the troubleshooting evolved I found an opened (burnt) resistor on the
vertical output amplifier's biasing.
As soon as I replaced the resistor, I noticed a great improvement in focus
(after I readjusted a number of trimpots that were set wrong partially
compensating the bias imbalance).

Lesson learnt (as I understood):
Focus is affected by inadequate balance between voltages of symmetrically
opposed electrodes, such as the vertical or horizontal plates, so, the
average of the varying voltages at the upper and lower plates must remain
constant and at a value that is correct in relation to the voltages of the
preceding and next electrodes in the electron beam's path.
If the upper plate is at an average level of, say, 60V (example), and if
the lower is at 40 (average being 50) and if 50 is the right voltage for
the vert plates, overall the focus may be right, but as the trace moves up
or down, the average between them doesn't remain constant and the focus
becomes modulated by the vertical signal.
A defect on the vertical amplifier that may be causing an imbalance of such
top and bottom plates'voltages, may affect adversely the focus in the
up-down direction.

My second experience was after I dismantled the oscilloscope to replace its
power supply caps and, in the process, I may have dislodged the "geometry"
trimppt from its correct adjustment.
As I just powered up the scope after reassembly, the focus was once again
awful, but luckily I also noticed that waveforms were distorted (Sort of
pin-cushion distotyion).
As soon as I properly re-adjusted the geometry trimpot, focus improved
again back to what it was.

Brgrds,

Fabio

On Jul 18, 2017 11:12 PM, "Gary Robert Bosworth @grbosworth
[TekScopes]" <TekScopes@...> wrote:



Thanx Stephen. I will see if there is a shield adjustment. I know very
little about CRTs.

Gary


On Tue, Jul 18, 2017 at 2:56 PM, sbell@... [TekScopes] <
TekScopes@...> wrote:



The setting of the CRT's vertical shield voltage seems to have a
considerable effect on the ability to obtain a well focused spot. I am not
familiar with the 7514 but if it has a adjustment for this voltage you
could try tweaking it to see if it results in improved focus.
On my 7834 I was unable to obtain a good spot with the shield voltage
adjustment procedure detailed in the manual so after going through the
complete CRT set-up procedure I had to further tweak the shield voltage to
obtain best overall focus.

Stephen

[Non-text portions of this message have been removed]


--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247 <(310)%20317-2247>

[Non-text portions of this message have been removed]

Re: Scope face focus anomaly

Gary Robert Bosworth
 

Thanx Stephen. I will see if there is a shield adjustment. I know very
little about CRTs.

Gary


On Tue, Jul 18, 2017 at 2:56 PM, sbell@... [TekScopes] <
TekScopes@...> wrote:



The setting of the CRT's vertical shield voltage seems to have a
considerable effect on the ability to obtain a well focused spot. I am not
familiar with the 7514 but if it has a adjustment for this voltage you
could try tweaking it to see if it results in improved focus.
On my 7834 I was unable to obtain a good spot with the shield voltage
adjustment procedure detailed in the manual so after going through the
complete CRT set-up procedure I had to further tweak the shield voltage to
obtain best overall focus.

Stephen






--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247


[Non-text portions of this message have been removed]

Re: CRT Tube (in good shape) for Tek464 / Tek466

 

In previous post ....

"The recommended replacement for all 4x6 CRT"
should be
"The recommended replacement for all 46x CRT"

/Håkan

Re: CRT Tube (in good shape) for Tek464 / Tek466

 

Please be aware that the 464 and 466 do not have the same CRT.
Actually they could use the same CRT if they are within the same S/N range i.e either
below or above B080000. The recommended replacement for all 4x6 CRT's is 154-0750-00.
If the scope is below B080000 some minor modifications must be done. The kit P/N is 050-0762-14.

/Håkan

Re: Scope face focus anomaly

s.r.bell@...
 

The setting of the CRT's vertical shield voltage seems to have a considerable effect on the ability to obtain a well focused spot. I am not familiar with the 7514 but if it has a adjustment for this voltage you could try tweaking it to see if it results in improved focus.
On my 7834 I was unable to obtain a good spot with the shield voltage adjustment procedure detailed in the manual so after going through the complete CRT set-up procedure I had to further tweak the shield voltage to obtain best overall focus.

Stephen

Re: Curve Tracer Adapers

Chuck Harris
 

Fundamentally, there is no difference beyond the
pin assignment.

Curve tracers, like the 576 only have E,B, and C
pins. The FET adapters typically assign B to the
Gate, E to the Source, and C to the Drain.

The standard TO220 packaged FET's have the pins
slightly scrambled from the bipolar configuration.

Banana plugs, with short wires and alligator clips
are often very handy... keep the wires around one
or two inches long.

-Chuck Harris

brentleew2003@... [TekScopes] wrote:

I want to purchase an adapter for my 576 I recently purchased, but I'm not sure what the difference between the Transistor, FET or combination version is. A couple of questions- 1. Are the 013-0098-00, 013-0098-01 and 013-0098-02, wired differently, or is it just labeling. 2. Is the bar at top front for emitter/source grounding or separating the two sides, and finally what are the pushbuttons on the sides for. I have not seen documentation for these as yet. Thanks and Cheers,
Brent





------------------------------------
Posted by: brentleew2003@...
------------------------------------


------------------------------------

Yahoo Groups Links



Re: CRT Tube (in good shape) for Tek464 / Tek466

Fabio Trevisan
 

Hello Colin,

Thanks for the heads up.
I didn't go all the way to check the actual part number for the 466 CRT,
but I had a vivid recollection of having read (here at Tekscopes or
elsewhere) that indeed they were different at the beginning, but later, Tek
started using the same tube for the 464 as for the 466, only that the ones
for the 466 were "selected" to meet the 466 Fast Writing specs, while the
other, less yielding CRTs, that couldn't meet those specs would be labeled
after the 464's part number.
I tended to believe on the former because even on my 464, it has the
"reduced scan" graticule, although it obviously don't have such.

Since I don't own a 466, what I need indeed is a tube that can work on the
464.

Rgrds,

Fabio


2017-07-18 16:50 GMT-03:00 'Colin Herbert' colingherbert@...
[TekScopes] <TekScopes@...>:



Hi Fabio,

Please be aware that the 464 and 466 do not have the same CRT. I got caught
on that one some time ago. I bought a parts-mule 466 with the idea it would
have a spare tube for my 464 - mistake. The 464 will accept 154-0749-00 as
you say - it has a P1 phosphor. It will also accept a 154-0722-00 which has
a phosphor similar to P1. If you want to check this for yourself, go to:

http://www.reprise.com/host/tektronix/reference/crt.asp

which is on Bill & Stan's Tektronix resource site (a useful source of info
on all sorts of Tek stuff). The 466 has the reduced scan facility, hence a
different CRT

Good Luck with getting a better CRT for your 464, it may not be so
difficult
in Brazil as you think, as someone might be driving from the USA down
south.
It's much worse for me in the UK.

Colin.

From: TekScopes@... [mailto:TekScopes@...]
Sent: 18 July 2017 20:06
To: TekScopes@...
Subject: [TekScopes] CRT Tube (in good shape) for Tek464 / Tek466

Hello folks at Tekscopes,

My Tek 464 + DM44 is, if I can say, finally repaired / restored.

All issues it had are solved and it's well calibrated to the specs or
better.

Nevertheless, since the very beginning I knew its CRT was worn out, so much
that I even tried to do some rejuvenation, without success.

I would like to know if any of the group would have a CRT for the 464 /
466, that you know not to be worn out, and which you would be willing to
part.

I know that by now, this is no longer an economically sound decision, since
I spent far way more on this 464 than it probably worth, but, on the other
hand, it would be just a shame that this scope is now in perfectly working
condition and yet, not being satisfactory on the trace brightness
department.

If there's anyone, I still don't know how we would manage to get it here to
Brazil as shipping of such a part seems rather scary to me and I`m not even
sure if / how difficult it would be to embark a plane with a part like that
(as hand luggage), should I be travelling near some of you at some point.
I`m afraid that since Sept 11, the dangerous goods list became quite
comprehensive and airlines in general would refuse boarding of items that
may implode, such a s a CRT.

The part number is 154-0749-00

KRgrds,

Fabio

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Re: CRT Tube (in good shape) for Tek464 / Tek466

Colin Herbert
 

Hi Fabio,



Please be aware that the 464 and 466 do not have the same CRT. I got caught
on that one some time ago. I bought a parts-mule 466 with the idea it would
have a spare tube for my 464 - mistake. The 464 will accept 154-0749-00 as
you say - it has a P1 phosphor. It will also accept a 154-0722-00 which has
a phosphor similar to P1. If you want to check this for yourself, go to:



http://www.reprise.com/host/tektronix/reference/crt.asp



which is on Bill & Stan's Tektronix resource site (a useful source of info
on all sorts of Tek stuff). The 466 has the reduced scan facility, hence a
different CRT



Good Luck with getting a better CRT for your 464, it may not be so difficult
in Brazil as you think, as someone might be driving from the USA down south.
It's much worse for me in the UK.



Colin.



From: TekScopes@... [mailto:TekScopes@...]
Sent: 18 July 2017 20:06
To: TekScopes@...
Subject: [TekScopes] CRT Tube (in good shape) for Tek464 / Tek466





Hello folks at Tekscopes,

My Tek 464 + DM44 is, if I can say, finally repaired / restored.

All issues it had are solved and it's well calibrated to the specs or
better.

Nevertheless, since the very beginning I knew its CRT was worn out, so much
that I even tried to do some rejuvenation, without success.

I would like to know if any of the group would have a CRT for the 464 /
466, that you know not to be worn out, and which you would be willing to
part.

I know that by now, this is no longer an economically sound decision, since
I spent far way more on this 464 than it probably worth, but, on the other
hand, it would be just a shame that this scope is now in perfectly working
condition and yet, not being satisfactory on the trace brightness
department.

If there's anyone, I still don't know how we would manage to get it here to
Brazil as shipping of such a part seems rather scary to me and I`m not even
sure if / how difficult it would be to embark a plane with a part like that
(as hand luggage), should I be travelling near some of you at some point.
I`m afraid that since Sept 11, the dangerous goods list became quite
comprehensive and airlines in general would refuse boarding of items that
may implode, such a s a CRT.

The part number is 154-0749-00

KRgrds,

Fabio









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