Date   

Re: Questions regarding new group

Ian van der Neut
 

I just clicked "Email me a link to login" (or something similar, I forgot
the exact words). Worked fine. Changed passwords, good to go.

On Tue, Dec 19, 2017 at 7:50 PM, Vince Vielhaber <vev@...> wrote:


I just thought of something. Go to the groups.io home page and click on
Log In. Go thru the Forgot Password steps and you'll be in.

Vince.



BTW, if I go to the home page, it displays a message stating I'm not
subscribed to this group (or any groups for that matter). Odd since I
get
the messages to my inbox...

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "n4buq" <n4buq@...>
To: TekScopes@groups.io
Sent: Tuesday, December 19, 2017 12:04:02 PM
Subject: [TekScopes] Questions regarding new group

Glad to see this is moving to a better platform.

I do, however, have a couple of questions about this.

I went to the group.io homepage and can see the tekscopes messages, but
am
not seeing anything for photos or other files. Are those linked from
the
homepage?

At the homepage, it has a login link. Do I need to create a groups.io
membership? I tried logging in as a Google account, but that didn't
seem to
take me back to the tekscopes homepage and clicking back there didn't
expose
any new functionality that I saw so am curious what/if I need to do
anything
else.


Thanks to all who made this possible! I'm sure I'll get the hang of it.
Barry - N4BUQ






--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com





--
One man's "magic" is another man's engineering. "Supernatural" is a null
word.
-- Excerpt from the notebooks of Lazarus Long, from Robert Heinlein's "Time
Enough for Love"


Re: Questions regarding new group

Vince Vielhaber
 

I just thought of something. Go to the groups.io home page and click on
Log In. Go thru the Forgot Password steps and you'll be in.

Vince.

BTW, if I go to the home page, it displays a message stating I'm not
subscribed to this group (or any groups for that matter). Odd since I get
the messages to my inbox...

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "n4buq" <n4buq@...>
To: TekScopes@groups.io
Sent: Tuesday, December 19, 2017 12:04:02 PM
Subject: [TekScopes] Questions regarding new group

Glad to see this is moving to a better platform.

I do, however, have a couple of questions about this.

I went to the group.io homepage and can see the tekscopes messages, but
am
not seeing anything for photos or other files. Are those linked from
the
homepage?

At the homepage, it has a login link. Do I need to create a groups.io
membership? I tried logging in as a Google account, but that didn't
seem to
take me back to the tekscopes homepage and clicking back there didn't
expose
any new functionality that I saw so am curious what/if I need to do
anything
else.


Thanks to all who made this possible! I'm sure I'll get the hang of it.
Barry - N4BUQ






Re: 2454B 400MHz gives just about 300 MHz BW

victor.silva
 

Ulli,

I'll check the parts numbers when I get home.
There is also another possibility -- if the CH1/CH2 switch fails it can impact the rise time of both channels.
It will not allow proper adjustment of rise time to <0.87 ns.
Typically I can adjust 2465Bs to the mid 0.70ns, some as low as 0.68ns.
It's a tradeoff between risetime and flatness.
When I see the failure I describe above in the channel switch the step response cannot be adjust below 1.2ns.

--Victor


Re: 7603 with noise in traces

Phillip Potter
 

Hi Dave,

:2o

Thanks for the warning... Actually, the 7601 came to me with the 7L13 installed!� I swapped the scope plugins in.� I think the fella I got this from swapped them while it was on his bench to show me... and hopefully that means that if there is a big fault, it's either fine, or it's too late. The 7L13 seems fine, but this rig is too new to me for me to really know that.� Sometimes, honesty is a bitch, huh?

The guy I got this from worked for TRW and the 7603 is from there, when they downsized and he got it in lieu of some overtime pay, IIRC. The scope led an easy life in a lab and not bouncing around from person to person.� Three owners: TRW, him, and then me... hopefully that is good.

Phil

On 12/19/2017 10:32 AM, Artekmedia wrote:
Phil

I dont want to make you paranoid� but I would make sure I had the scope working with a good set of known every day plug-ins before I plugged in something as exotic and expensive as the 7L13. Just to be sure you dont have a funky voltage somewhere coming from the scope and zap your 7L13 which is REALLY no fun to troubleshoot. Talk about a blivit

Dave



On 12/19/2017 1:23 PM, Phillip Potter wrote:
Hi Chris,

Thanks for the information.� Glad to hear that, for the most part, what I am seeing is normal.

The jumpiness in the image is constant, like a jitter.� It is not bad, but I notice it and wonder if it is normal, too. I realize that this a an old scope, but IMO one of the best, and certainly the best I have even owned...� If I only had a crane to pick it up. ;)� I am going to trade out the scope plugins for a 7L13 analyzer plugin and see if it is jittery too.

Again, thanks for your input!

Phil






Re: PG-506 Calibrator and Power Module Compatibility

@Arcticgeek
 

A picture would definitely help. I have 2 of these PG506 calibration generators - 1 is a very old one that is the original design (sn B01XXXX) and the other one is either a PG506 or PG506A. It is the newer display face, but the red bezel is broken off so I really don't know if it's a newer PG506 or a PG506A. At any rate, these should plug in fine to a regular TM501/503/504/506 mainframe, and there really isn't any way to change the keying on the connector. There is a way to change the keying on the power mainframe units, but I'm not aware of any way to make the keying unique on the plugin module. Are the "alignment pins" you mention the pins that are screwed in to the corners on the back? If so, I'd say it's very possible someone accidentally put those alignment pins in the wrong corners by accident, and if you move them you'll be just fine.

Good luck!


Re: 7603 with noise in traces

ArtekManuals
 

Phil

I dont want to make you paranoid  but I would make sure I had the scope working with a good set of known every day plug-ins before I plugged in something as exotic and expensive as the 7L13. Just to be sure you dont have a funky voltage somewhere coming from the scope and zap your 7L13 which is REALLY no fun to troubleshoot. Talk about a blivit

Dave

On 12/19/2017 1:23 PM, Phillip Potter wrote:
Hi Chris,

Thanks for the information.  Glad to hear that, for the most part, what I am seeing is normal.

The jumpiness in the image is constant, like a jitter.  It is not bad, but I notice it and wonder if it is normal, too. I realize that this a an old scope, but IMO one of the best, and certainly the best I have even owned...  If I only had a crane to pick it up. ;)  I am going to trade out the scope plugins for a 7L13 analyzer plugin and see if it is jittery too.

Again, thanks for your input!

Phil




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


Re: Questions regarding new group

ArtekManuals
 

Not really any  different that the Yahoo groups. you got email over there but if you were not logged in yahoo groups you couldn't get to the various sub menus ( files photos etc) You may have had your computer / browser set up to auto log in the Yahoo groups and since it has been so long since you set it up the log in on yahoo groups was transparent to you ... The same can be the case with group .io if you  allow save password in your browser

Dave
manuals@...

On 12/19/2017 1:08 PM, n4buq wrote:
BTW, if I go to the home page, it displays a message stating I'm not subscribed to this group (or any groups for that matter). Odd since I get the messages to my inbox...

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "n4buq" <n4buq@...>
To: TekScopes@groups.io
Sent: Tuesday, December 19, 2017 12:04:02 PM
Subject: [TekScopes] Questions regarding new group

Glad to see this is moving to a better platform.

I do, however, have a couple of questions about this.

I went to the group.io homepage and can see the tekscopes messages, but am
not seeing anything for photos or other files. Are those linked from the
homepage?

At the homepage, it has a login link. Do I need to create a groups.io
membership? I tried logging in as a Google account, but that didn't seem to
take me back to the tekscopes homepage and clicking back there didn't expose
any new functionality that I saw so am curious what/if I need to do anything
else.


Thanks to all who made this possible! I'm sure I'll get the hang of it.
Barry - N4BUQ



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


Re: 7603 with noise in traces

Phillip Potter
 

Hi Chris,

Thanks for the information.  Glad to hear that, for the most part, what I am seeing is normal.

The jumpiness in the image is constant, like a jitter.  It is not bad, but I notice it and wonder if it is normal, too. I realize that this a an old scope, but IMO one of the best, and certainly the best I have even owned...  If I only had a crane to pick it up. ;)  I am going to trade out the scope plugins for a 7L13 analyzer plugin and see if it is jittery too.

Again, thanks for your input!

Phil


Re: Questions regarding new group

ArtekManuals
 

On 12/19/2017 1:04 PM, n4buq wrote:
I went to the group.io homepage and can see the tekscopes messages, but am not seeing anything for photos or other files. Are those linked from the homepage?
Yes they are linked to the home page


At the homepage, it has a login link. Do I need to create a groups.io membership? I tried logging in as a Google account, but that didn't seem to take me back to the tekscopes homepage and clicking back there didn't expose any new functionality that I saw so am curious what/if I need to do anything else.
Because you are a member of the Tekscopes.io community does not automatically make you a member of groups .io

YES you need to create a groups.io  membership this is not the same as being a Tekscopes member. I know it seems a bit out of sequence but that is because an existing group and it's membership were transferred from Yahoo. If you were a newbie seeking membership you would first join groups .io and then petition for acceptance to Tekscopes ( Yahoo was no different by the way)

Once you are logged in to groups .IO then reopen the Tekscopes home page

Group Home: https://groups.io/g/TekScopes

Dave



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


Re: Questions regarding new group

Vince Vielhaber
 

Don't log in as a google account. You've been here long enough that when
Dennis originally set things up we all got an email with account setup
info. Just click a link as I recall. Otherwise, set up an account using
your email address, not a google, facebook, etc. login and things should
happen for you. Until you've set up an account and you're a member, you
won't see much.

Vince.

BTW, if I go to the home page, it displays a message stating I'm not
subscribed to this group (or any groups for that matter). Odd since I get
the messages to my inbox...

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "n4buq" <n4buq@...>
To: TekScopes@groups.io
Sent: Tuesday, December 19, 2017 12:04:02 PM
Subject: [TekScopes] Questions regarding new group

Glad to see this is moving to a better platform.

I do, however, have a couple of questions about this.

I went to the group.io homepage and can see the tekscopes messages, but
am
not seeing anything for photos or other files. Are those linked from
the
homepage?

At the homepage, it has a login link. Do I need to create a groups.io
membership? I tried logging in as a Google account, but that didn't
seem to
take me back to the tekscopes homepage and clicking back there didn't
expose
any new functionality that I saw so am curious what/if I need to do
anything
else.


Thanks to all who made this possible! I'm sure I'll get the hang of it.
Barry - N4BUQ






Re: Questions regarding new group

n4buq
 

BTW, if I go to the home page, it displays a message stating I'm not subscribed to this group (or any groups for that matter). Odd since I get the messages to my inbox...

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "n4buq" <n4buq@...>
To: TekScopes@groups.io
Sent: Tuesday, December 19, 2017 12:04:02 PM
Subject: [TekScopes] Questions regarding new group

Glad to see this is moving to a better platform.

I do, however, have a couple of questions about this.

I went to the group.io homepage and can see the tekscopes messages, but am
not seeing anything for photos or other files. Are those linked from the
homepage?

At the homepage, it has a login link. Do I need to create a groups.io
membership? I tried logging in as a Google account, but that didn't seem to
take me back to the tekscopes homepage and clicking back there didn't expose
any new functionality that I saw so am curious what/if I need to do anything
else.


Thanks to all who made this possible! I'm sure I'll get the hang of it.
Barry - N4BUQ




Questions regarding new group

n4buq
 

Glad to see this is moving to a better platform.

I do, however, have a couple of questions about this.

I went to the group.io homepage and can see the tekscopes messages, but am not seeing anything for photos or other files. Are those linked from the homepage?

At the homepage, it has a login link. Do I need to create a groups.io membership? I tried logging in as a Google account, but that didn't seem to take me back to the tekscopes homepage and clicking back there didn't expose any new functionality that I saw so am curious what/if I need to do anything else.


Thanks to all who made this possible! I'm sure I'll get the hang of it.
Barry - N4BUQ


Re: Protect your 575 curve tracer

bobkrassa
 

You can start to check if you have the fuses by removing the filter on the back of the scope, removing the little screws that hold the fan and moving the fan aside - no need to disconnect it. The fuses are short Buss fuses - the top two items on the diode board. You can't easily see this from the sides.

The fuses were provided with the diode board with mod kit 040-0223-00.

There was another mod kit to just install the fuses, using a short ceramic strip on the underside of the chassis.

I wonder if the transformer killing shorts were more common with the selenium rectifiers as that is a known failure mode. Still good to have as this is a high current 15 volt circuit.

Bob Krassa
ACØJL


Re: 7904A readout bounce

NigelP
 

So, further investigation demonstrates more of what I've already noted. Scenario: 7904A loaded with 2x 7A26, 7B92A, 7D15 and ALT set on both vertical PIs and mainframe set to ALT...... if I overlay all four traces on top of each other there is NO bouncing of the readout . As you increment any trace position towards top/bottom of the screen the bounce gets increasingly larger reaching around 0.1 major division (therefore readout bounce magnitude is a direct function of trace vertical position). Sweep speed in the region of 50mS/Div +/- some shows up nicely, but any variation of sweep speed simply varies the level of visual annoyance. Any combination of ALT setting produces the same result.

Similarly, substituting a 0587 Signal Standardiser into either PI slot and set up to perform the handbook "Thermal Comp" procedure, as mooted earlier in the thread, the readout bounces away merrily to the step waveform rising/falling.

Also using for example a single 7A26 set to CH1 and mainframe set to LEFT (so no ALT settings) the readout shifts up and down according to PI vertical position setting.... a direct and linear relationship between SHIFT potentiometer setting and readout vertical screen position. Readout movement is in anti-phase to trace shift movement.


Re: c-12 camera

Brian
 

Hi , I saw those types but the ones I used and I am not sure if the first is a bona-fide 600 type --- 665 B/W with negative -- cant supply . Also the one really needed for fast work type 47 3000asa roll film ( can push to 10,000asa ) cant supply

From: Chuck Harris <cfharris@...>
To: TekScopes@groups.io
Sent: Tuesday, 19 December 2017, 16:12
Subject: Re: [TekScopes] Re: c-12 camera

What exactly did you ask them?

They seem to have:

i-type in both color and B&W
600 in both color and B&W
SX70 in color and B&W
Spectra, though currently sold out
8x10, B&W, color sold out.

I didn't see any sign of the old roll type
of film, which would leave out any of the camera
backs that used that film.

600 and SX70 were used in lots of scope
and microscope camera backs.

-Chuck Harris


Brian via Groups.Io wrote:
For the groups benefit , I have been in contact with Polaroid . Their reply is as follows :---
|
|  Ilona Cerowska (Polaroid Originals Support)  Dec 19, 10:31 AM EST  Hi Brian,

Thanks for your message.

Unfortunately we can't produce these film types please we don't have the necessary machinery. As far as I'm aware, there is no one else currently producing these film types.

I'm sorry to not be able to help further here.

Thanks and kind regards,
Ilona |

  |

So its not such good news as hoped for .

      From: Chuck Harris <cfharris@...>
  To: TekScopes@groups.io
  Sent: Tuesday, 19 December 2017, 14:37
  Subject: Re: [TekScopes] Re: c-12 camera
   
For the group's edification, the company that had been
making new polaroid film for legacy polaroid cameras,
"The Impossible Project", a Polish firm, has acquired
the polaroid brand, and intellectual property related
to the instant film, and its manufacture.  This is in
addition to having acquired polaroid's last film
manufacturing factory, in 2008.

Most all of the polaroid film types are available new,
and under the polaroid brand.

This is as of May 12, 2017.

<https://www.polaroid.com/news/polaroid-acquired-by-new-ownership-group>

If you want to use your scope cameras, with polaroid backs,
you can use your scope cameras, with real polaroid film.

Now, if you could just find a camera, with the right
adapter ring to fit your scope...

-Chuck Harris


brianas1948@... [TekScopes] wrote:
Hi , I have 2 x C-12 camera's and adapters for the 500 series scopes , one also has a graticule projector attachment . I would need to get these out of storage to see what condition they are in before setting any price but I am prepared to be very reasonable for anyone interested . I have not been able to get any reliable supply of polaroid film for these for some while and I now use the C1001/C1002 digital scope camera's -- but on 7k series scopes




   

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Re: Tek Knob Project - scan and make

 

A small problem with this plan is the interior of the knob, which is a METAL (aluminum) core, threaded for one or more steel setscrews. I am certain an all-plastic version would not work.

regards,
walter


Not Tek, but scopish, and interesting...

 

I have broken up a few Data Check multiple rack mounted scopes. These amazing arrays provide up to 7 plug-in scopes in a single rack unit, very interesting little gadgets. they were used to monitor missile telemetry and other many-source lab functions. I am hoping to find a manual for the 1200B version, any luck out there? no web stuff was located anywhere. 7 scopes with full controls in 5 1/4 inches of rack space is pretty impressive.

I use these just for the CRTs ( a rare by very handy miniature rectangular AEG D7-233GY), and scrap all the rest. If anybody wants the little scope assemblies to use with other CRTs, let me know. I can make that happen. Some amazing through hole assembly and packaging in these babies.

Thanks to the hard working Dennis for moving our group to a new home!
all the best.
walter (walter2 -at- sphere.bc.ca)
sphere research corp.


Re: c-12 camera

Chuck Harris
 

What exactly did you ask them?

They seem to have:

i-type in both color and B&W
600 in both color and B&W
SX70 in color and B&W
Spectra, though currently sold out
8x10, B&W, color sold out.

I didn't see any sign of the old roll type
of film, which would leave out any of the camera
backs that used that film.

600 and SX70 were used in lots of scope
and microscope camera backs.

-Chuck Harris


Brian via Groups.Io wrote:

For the groups benefit , I have been in contact with Polaroid . Their reply is as follows :---
|
| Ilona Cerowska (Polaroid Originals Support) Dec 19, 10:31 AM EST Hi Brian,

Thanks for your message.

Unfortunately we can't produce these film types please we don't have the necessary machinery. As far as I'm aware, there is no one else currently producing these film types.

I'm sorry to not be able to help further here.

Thanks and kind regards,
Ilona |

|

So its not such good news as hoped for .

From: Chuck Harris <cfharris@...>
To: TekScopes@groups.io
Sent: Tuesday, 19 December 2017, 14:37
Subject: Re: [TekScopes] Re: c-12 camera

For the group's edification, the company that had been
making new polaroid film for legacy polaroid cameras,
"The Impossible Project", a Polish firm, has acquired
the polaroid brand, and intellectual property related
to the instant film, and its manufacture. This is in
addition to having acquired polaroid's last film
manufacturing factory, in 2008.

Most all of the polaroid film types are available new,
and under the polaroid brand.

This is as of May 12, 2017.

<https://www.polaroid.com/news/polaroid-acquired-by-new-ownership-group>

If you want to use your scope cameras, with polaroid backs,
you can use your scope cameras, with real polaroid film.

Now, if you could just find a camera, with the right
adapter ring to fit your scope...

-Chuck Harris


brianas1948@... [TekScopes] wrote:
Hi , I have 2 x C-12 camera's and adapters for the 500 series scopes , one also has a graticule projector attachment . I would need to get these out of storage to see what condition they are in before setting any price but I am prepared to be very reasonable for anyone interested . I have not been able to get any reliable supply of polaroid film for these for some while and I now use the C1001/C1002 digital scope camera's -- but on 7k series scopes






| | Virus-free. www.avg.com |





What I can help with and what I can't help with

 

My apologies but I have been so focused on handling all the details of
setting up our new home that I have had no time to "Look around" at how you
get to everything.



Thank you to Craig and Dave Henderson for blazing a trail through the new
pathways to our files and photos. When I have the time I will be using their
suggestions on how to find the files, photos, and archives I am interested
in.



I can clear up a few things about what will be missing. Groups.io cannot
transfer Attachments. Fortunately we didn't have a lot of those.



This is what Groups.io did transfer

* Members
* Messages
* Photos
* Files
* Links
* Databases

Here are some statistics:

1. Total Members Processed: 8582
2. Successfully Added: 7054
3. Bounced Members (Skipped): 1432
4. Moderated Members: 2
5. Members on Digest: 883
6. Undisclosed Emails (Skipped): 28

As I learn more about the transfer and how it went I will report those
details to the group.

That's it for the moment.

Dennis Tillman W7PF


Re: Welcome!

Sergey Kubushyn
 

On Tue, 19 Dec 2017, Michael Dunn wrote:

The dust has settled, and here we are :-)

Functionality is virtually identical to Yahoo. And I think we’ll be
pleased with the return to a clean, responsive, and relatively logical web
site.

Dennis will no doubt soon send out donation info.
Yep. please send the info so we would be able to make our contributions as
soon as possible.

---
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