Date   

Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?

Chuck Harris <cfharris@...>
 

Metal can, or plastic bottle?

-Chuck Harris

Dennis Tillman W7PF wrote:

Hi Wilson,

Ace Hardware, a US Hardware Store Franchise, and TrueValue Hardware Stores (another US Franchise) sell 99% IPA by the gallon for $20. I have not found it cheaper anywhere, and you can't beat the convenience of getting it anytime you want it at the local hardware store.

Dennis Tillman W7PF

-----Original Message-----
From: Bill Carns
Sent: Tuesday, March 05, 2019 5:28 PM

If you go to a pharmacy and talk with the Pharmacist, they can give you IPA
with a higher percent IPA and less water. This is better for pots, but be
careful to not saturate. Sometimes you can damage the carbon resistance
layer that is laid down for the wiper to run on. I am not sure if that is
true for the ones TEK uses.

Bill

-----Original Message-----
From: wilson2115@outlook.com
Sent: Tuesday, March 05, 2019 7:13 PM

I have some 91% Isopropyl Rubbing Alcohol sitting around and I have a Tek 577
with dirty horizontal and vertical display controls, I have used this to
clean residue on circuit boards and grime off surfaces and it works quite
well so I was wondering if it could be used to clean the dirty potentiometers
on the 577 curve tracer. 91% seems the best the best I can find. I also have
a can CRC Lectra Clean. What are your thoughts, recommendations? Thanks



Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

ArtekManuals <manuals@...>
 

Exactly

As Dale says we have multiple accounts (personal + Business) and frankly and using the group web interface directly takes MUCH more time. Also I have years worth of history across multiple emails that are can all be catalogued and stored by topic rather than email address
One stop going back 10+ years.

Dave

On 3/7/2019 8:10 AM, Dale H. Cook wrote:
At 09:43 PM 3/6/2019, Kyle Rhodes wrote:

I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.
For some people webmail is not a viable option because of the number of accounts that they have to handle from several email servers. If I had to do webmail for all of my accounts and servers that would occupy far too much time. I also need local storage for some of those accounts.

As for attachments, that is another matter entirely, unrelated to webmail vs. a client.

Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
https://plymouthcolony.net/starcity/radios/index.html



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


Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Dale H. Cook
 

At 09:43 PM 3/6/2019, Kyle Rhodes wrote:

I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.
For some people webmail is not a viable option because of the number of accounts that they have to handle from several email servers. If I had to do webmail for all of my accounts and servers that would occupy far too much time. I also need local storage for some of those accounts.

As for attachments, that is another matter entirely, unrelated to webmail vs. a client.

Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
https://plymouthcolony.net/starcity/radios/index.html


Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Carsten Bormann
 

The list admin has asked us not to discuss the issue while he looks at the solution.

Unfortunately, there are lot of myths here that may have been true in 1998 but no longer are, and they form the basis of a persistent argument that, by 2019, is now just wrong.

I’ve been on Gmail since it was launched and I’ve never looked back. It also automagically threads conversations so there aren’t any concerns of who said what with the various complaints I see of people not quoting replies properly….
This confuses gmail the mail service with gmail the interactive mail access tool.
Gmail the mail service is very good apart from privacy concerns. There are few privacy concerns with open lists like this, so gmail is just great for a tekscope subscription.

You can use gmail the interactive mail access tool with this, or use a separate mail reader program. By now, both offer offline mail access capabilities.

The attachments are downloaded whether or not you use an email client or the web portal.
This is simply not true.

There are a number of ways you can control what is downloaded.

groups.io has a control that you can set for a specific mailing list:

Go to https://groups.io/g/TekScopes/editsub
Open “Advanced Preferences”. Configure “Max Attachment Size”.

Mail readers usually also have a control for whether the attachments that are offered are downloaded automatically or manually. The way to do this differs between mail readers, usually a couple of clicks or so.
(Apple Mail: CMD-comma, Accounts, (select account), Account Information, Download Attachments.)

For folks with limited data plans that's what causes the problems. I'm on a limited data plan as are a number of others. I may not be interested in a topic, yet I still have to download those images which I have no desire to see.
As I said, this is not factual.

Upload the images to our groups.io pictures section and the I have the choice of whether I want to view those photos or not.
For images that make good named reference galleries: Please do.

For the odd picture that accompanies a “does this look right” message, this is not the right way to do this; you cause the accretion of hard to find information. Mail already supports attachments. The link between the attachments and the message does not get lost.

I’ve tried the web portal and dislike it.
That is your right (I happen to hate “Web Forum” style interfaces, too).

It’s not available if I lose my connection,
Not true, as indicated above.

which can happen quite often in this northern rural area when storms and snow hit us.
Definitely true in many parts of the world, in particular those that actually have enough space to keep Tek Scopes around :-)

With the email client I store and save all the emails locally so they are available even if I’m offline.
Exactly, and that also applies, optionally (automatically or manually), to the attachments.

I’m sorry for not quite following your policy, Dennis. This will be the one message correcting the outdated information for this week. Everyone: please don’t discuss this further until Dennis has found out more about this (which I hope this message facilitates).

Grüße, Carsten


Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Kyle Rhodes
 

Hi Dave,

Here's a link -- let me know if it doesn't work for you:
https://chrome.google.com/webstore/detail/gmail-offline/ejidjjhkpiempkbhmpbfngldlkglhimk?hl=en


Thanks,
Kyle


--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@ksramps.com
http://www.ksramps.com
http://kylerhodesdesigns.com

On Thu, Mar 7, 2019 at 6:55 AM David Kuhn <Daveyk021@gmail.com> wrote:

" It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online."

Hey Kyle,

I've been looking for that extension and can not find it. Any details on
how to get it? It sounds like a great idea.

Dave

On Thu, Mar 7, 2019 at 6:25 AM Kyle Rhodes <ksrhodes@gmail.com> wrote:

Hi Adrian,

Right -- Gmail, aka Google mail. It's web based, so one doesn't need a
stand-alone client.

For those who have connection issues (slow / intermittent) there are two
additional options -- it allows for a simplified view that works better
for
slow connections. It also has a Chrome extension called Gmail Offline
that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online. I personally use this when I'm
traveling abroad and have limited internet access.

It will not work with an old email address, so one must migrate that,
which
is perhaps what you're primarily asking about? In my case, I simply
forward old email accounts to my Gmail address, and and I can easily
auto-label emails sent to these other accounts, and even reply as if I'm
replying from these accounts. I also have several domain email addresses
aliased to my Gmail for my businesses.

In the background, Gmail has quite a sophisticated number of settings and
it works very well -- for me anyway.


Thanks,
Kyle


--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@ksramps.com
http://www.ksramps.com
http://kylerhodesdesigns.com


On Thu, Mar 7, 2019 at 6:14 AM Adrian <Adrian@nicol1.org.uk> wrote:

Hi Kyle, is the 'Gmail' you are refer to the Google email service?

If so, I didn't think it's offers a stand-alone email client like
Thunderbird, Eudora etc so no use for anyone who needs a client for
their own email or am I missing something here?

Adrian

On 3/7/2019 2:43 AM, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use
Thunderbird, Eudora, and the like, complaining of attachments, etc.

I’ve been on Gmail since it was launched and I’ve never looked back.
It
also automagically threads conversations so there aren’t any concerns
of
who said what with the various complaints I see of people not quoting
replies properly....








Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

David Kuhn
 

" It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online."

Hey Kyle,

I've been looking for that extension and can not find it. Any details on
how to get it? It sounds like a great idea.

Dave

On Thu, Mar 7, 2019 at 6:25 AM Kyle Rhodes <ksrhodes@gmail.com> wrote:

Hi Adrian,

Right -- Gmail, aka Google mail. It's web based, so one doesn't need a
stand-alone client.

For those who have connection issues (slow / intermittent) there are two
additional options -- it allows for a simplified view that works better for
slow connections. It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online. I personally use this when I'm
traveling abroad and have limited internet access.

It will not work with an old email address, so one must migrate that, which
is perhaps what you're primarily asking about? In my case, I simply
forward old email accounts to my Gmail address, and and I can easily
auto-label emails sent to these other accounts, and even reply as if I'm
replying from these accounts. I also have several domain email addresses
aliased to my Gmail for my businesses.

In the background, Gmail has quite a sophisticated number of settings and
it works very well -- for me anyway.


Thanks,
Kyle


--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@ksramps.com
http://www.ksramps.com
http://kylerhodesdesigns.com


On Thu, Mar 7, 2019 at 6:14 AM Adrian <Adrian@nicol1.org.uk> wrote:

Hi Kyle, is the 'Gmail' you are refer to the Google email service?

If so, I didn't think it's offers a stand-alone email client like
Thunderbird, Eudora etc so no use for anyone who needs a client for
their own email or am I missing something here?

Adrian

On 3/7/2019 2:43 AM, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use
Thunderbird, Eudora, and the like, complaining of attachments, etc.

I’ve been on Gmail since it was launched and I’ve never looked back.
It
also automagically threads conversations so there aren’t any concerns of
who said what with the various complaints I see of people not quoting
replies properly....






Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Kyle Rhodes
 

Hi Adrian,

Right -- Gmail, aka Google mail. It's web based, so one doesn't need a
stand-alone client.

For those who have connection issues (slow / intermittent) there are two
additional options -- it allows for a simplified view that works better for
slow connections. It also has a Chrome extension called Gmail Offline that
works like a stand-alone client in that it will queue email compositions
and sync send/receive tasks once online. I personally use this when I'm
traveling abroad and have limited internet access.

It will not work with an old email address, so one must migrate that, which
is perhaps what you're primarily asking about? In my case, I simply
forward old email accounts to my Gmail address, and and I can easily
auto-label emails sent to these other accounts, and even reply as if I'm
replying from these accounts. I also have several domain email addresses
aliased to my Gmail for my businesses.

In the background, Gmail has quite a sophisticated number of settings and
it works very well -- for me anyway.


Thanks,
Kyle


--
KSR Amps / Rhodes Amplification, LLC
Kyle Rhodes
(513) 480-2677
kyle@ksramps.com
http://www.ksramps.com
http://kylerhodesdesigns.com

On Thu, Mar 7, 2019 at 6:14 AM Adrian <Adrian@nicol1.org.uk> wrote:

Hi Kyle, is the 'Gmail' you are refer to the Google email service?

If so, I didn't think it's offers a stand-alone email client like
Thunderbird, Eudora etc so no use for anyone who needs a client for
their own email or am I missing something here?

Adrian

On 3/7/2019 2:43 AM, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use
Thunderbird, Eudora, and the like, complaining of attachments, etc.

I’ve been on Gmail since it was launched and I’ve never looked back. It
also automagically threads conversations so there aren’t any concerns of
who said what with the various complaints I see of people not quoting
replies properly....




Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Adrian
 

Hi Kyle, is the 'Gmail' you are refer to the Google email service?

If so, I didn't think it's offers a stand-alone email client like Thunderbird, Eudora etc so no use for anyone who needs a client for their own email or am I missing something here?

Adrian

On 3/7/2019 2:43 AM, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.

I’ve been on Gmail since it was launched and I’ve never looked back. It also automagically threads conversations so there aren’t any concerns of who said what with the various complaints I see of people not quoting replies properly....


Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Mark Wendt
 

On 3/6/19 21:43, Kyle Rhodes wrote:
Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.

I’ve been on Gmail since it was launched and I’ve never looked back. It also automagically threads conversations so there aren’t any concerns of who said what with the various complaints I see of people not quoting replies properly....

My $0.02 — everyone should at least try it.

Thunderbird will also thread conversations as this one was threaded.  It's not because of the email reader that complaints from the attachments arose.  The problem is the same whether an email reader or the webmail portal is used.  The attachments are downloaded whether or not you use an email client or the web portal.  For folks with limited data plans that's what causes the problems.  I'm on a limited data plan as are a number of others. I may not be interested in a topic, yet I still have to download those images which I have no desire to see.  The same would happen if I viewed my email in the web portal.

Upload the images to our groups.io pictures section and the I have the choice of whether I want to view those photos or not.

I've tried the web portal and dislike it.  It's not available if I lose my connection, which can happen quite often in this northern rural area when storms and snow hit us.  With the email client I store and save all the emails locally so they are available even if I'm offline.


Mark


Re: DC508 HELP with PHOTOS option 7

Miguel Work
 

Thanks Dennis,

Mainframe is option7 (rear interconnected) , I only need to modify DC508 to option 7. Board is installed but without components.

https://groups.io/g/TekScopes/photo/86278/0?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/photo/86278/5?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/photo/86278/6?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/album?id=86278


Thanks

Regards

Miguel



-----Mensaje original-----
De: TekScopes@groups.io [mailto:TekScopes@groups.io] En nombre de Dennis Tillman W7PF Enviado el: jueves, 7 de marzo de 2019 7:13
Para: TekScopes@groups.io
Asunto: Re: [TekScopes] DC508 HELP with PHOTOS option 7

Hi Miguel,

TM503 is just a 3 slot mainframe. That can't possibly be what you are referring to as Option 7. It might be part of the option since, presumably, you will want to have the TR502 and the DC508 in the same TM503 main frame. There are probably a few interconnections you need to make on the back plane of the TM503 between the TR502 and the DC508 to make them work together.

Dennis Tillman W7PF

-----Original Message-----
From: Miguel Work
Sent: Wednesday, March 06, 2019 11:54 AM

Hi, I had bought a DC508 option 1 for my TR502 7L14. I need to install
option7, TM503 is option7, manual is very clear, but It will be very
useful a detailed photos from cables and connector. Has some body one
and can post some photos?
Thanks
Regards

Miguel


--
Dennis Tillman W7PF
TekScopes Moderator


Re: DC508 HELP with PHOTOS option 7

Miguel Work
 

Thanks Dennis,

Mainframe is option7 (rear interconnected) , I only need to modify DC508 to option 7. Board is installed but without components.

https://groups.io/g/TekScopes/photo/86278/3?p=Name,,,20,1,0,0

https://groups.io/g/TekScopes/photo/86278/0?p=Name,,,20,1,0,0


https://groups.io/g/TekScopes/album?id=86278

Thanks

Regards

Miguel



-----Mensaje original-----
De: TekScopes@groups.io [mailto:TekScopes@groups.io] En nombre de Dennis Tillman W7PF
Enviado el: jueves, 7 de marzo de 2019 7:13
Para: TekScopes@groups.io
Asunto: Re: [TekScopes] DC508 HELP with PHOTOS option 7

Hi Miguel,

TM503 is just a 3 slot mainframe. That can't possibly be what you are referring to as Option 7. It might be part of the option since, presumably, you will want to have the TR502 and the DC508 in the same TM503 main frame. There are probably a few interconnections you need to make on the back plane of the TM503 between the TR502 and the DC508 to make them work together.

Dennis Tillman W7PF

-----Original Message-----
From: Miguel Work
Sent: Wednesday, March 06, 2019 11:54 AM

Hi, I had bought a DC508 option 1 for my TR502 7L14. I need to install
option7, TM503 is option7, manual is very clear, but It will be very
useful a detailed photos from cables and connector. Has some body one
and can post some photos?
Thanks
Regards

Miguel


--
Dennis Tillman W7PF
TekScopes Moderator


Re: 152-0310-00 replacement

Michael A. Terrell
 

1N3758 is not a tunnel diode. It is a rectifier that the NTE NTE5804will
replace The NTE part is:
Axial Lead Standard Recovery Silicon Rectifiers, 3 Amp, 400V, DO27

The 1N3758appears to be a 400V, 1A part.

On Tue, Mar 5, 2019 at 12:24 PM Roger Evans via Groups.Io <very_fuzzy_logic=
yahoo.com@groups.io> wrote:

Later serial number 454s had tunnel diodes which were the small gold can
with a flange for polarity and gold plated leads (similar to 1N3716). I
have one 454 with these (original) diodes and one which had the stripline
mounted tunnel diodes but all four had failed and were replaced with a
mixture of 1N3716 and the Russion 4.7mA tunnel diodes off eBay. I have not
tested whether the replacement tunnel diodes meet the original spec but the
fixed scope works fine for 'normal' use.

Roger




Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Dave Seiter
 

This has happened to me about eight or nine times. Not a big deal.

On Mar 6, 2019, at 10:27 AM, Brendan via Groups.Io <the_infinite_penguin=yahoo.com@groups.io> wrote:

This happened to me a week or so ago. Like you I accidentally marked a message as spam in yahoo mail.
On Wed, Mar 6, 2019 at 11:08 AM, Daniel Koller wrote:


Hi Folks,
This is a test for me to make sure I am re-subscribed, and a warning to
others to be careful.
I use Yahoo mail to read my tekscopes group messages (perhaps I should
not use Yahoo Mail). This morning I *accidentally* clicked on a message and
reported it as spam, then immediately restored it to my inbox realizing it was
the wrong one. It seems groups.io is on a hair trigger because it sent me
the message below. This must be a new setting because...
...I have accidentally reported messages from Tekscopes as spam before, and
this has not happened, and some Tekscopes messages regularly end up in my spam
folder anyway, and I have to check there from time to time. So, wonder if
Yahoo is now reporting when you move a message to spam, or groups.io is now
recording when yahoo sends such a report.
Either way, heads up to everyone that the system is sensitive!
Dennis, is there a way to set up the groups.io system so that it takes 3 or
so reports of spam before groups.io unsubscribes a user? Thanks,
Dan


----- Forwarded Message ----- From: TekScopes@groups.io
<TekScopes+owner@groups.io>To: "kaboomdk@yahoo.com" <kaboomdk@yahoo.com>Sent:
Wednesday, March 6, 2019, 10:23:58 AM ESTSubject: You have been removed from
TekScopes@groups.io
Hello,
Because your Email Service Provider reported to us that one or more messages
sent to you from TekScopes@groups.io has been marked as spam you have been
automatically removed from the group. We suggest that you check your spam box
as soon as possible to see if your Email Service Provider has diverted
legitimate messages into it.

You will receive no more emails from that group. If this was a mistake, you
can resume your subscription within the next 7 days by clicking the following
link:

Resume Subscription

Groups.io groups offer several options for controlling how much and what types
of emails to receive. See this Help Center article for more information.

If this happens repeatedly please check with your email service to learn about
how they decide to send feedback reports to list services (such as Groups.io
groups).

Cheers,
The Groups.io Team



Re: DC508 HELP with PHOTOS option 7

 

Hi Miguel,

TM503 is just a 3 slot mainframe. That can't possibly be what you are referring to as Option 7. It might be part of the option since, presumably, you will want to have the TR502 and the DC508 in the same TM503 main frame. There are probably a few interconnections you need to make on the back plane of the TM503 between the TR502 and the DC508 to make them work together.

Dennis Tillman W7PF

-----Original Message-----
From: Miguel Work
Sent: Wednesday, March 06, 2019 11:54 AM

Hi, I had bought a DC508 option 1 for my TR502 7L14. I need to install
option7, TM503 is option7, manual is very clear, but It will be very useful a
detailed photos from cables and connector. Has some body one and can post
some photos?
Thanks
Regards

Miguel


--
Dennis Tillman W7PF
TekScopes Moderator


Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?

 

Hi Wilson,

Ace Hardware, a US Hardware Store Franchise, and TrueValue Hardware Stores (another US Franchise) sell 99% IPA by the gallon for $20. I have not found it cheaper anywhere, and you can't beat the convenience of getting it anytime you want it at the local hardware store.

Dennis Tillman W7PF

-----Original Message-----
From: Bill Carns
Sent: Tuesday, March 05, 2019 5:28 PM

If you go to a pharmacy and talk with the Pharmacist, they can give you IPA
with a higher percent IPA and less water. This is better for pots, but be
careful to not saturate. Sometimes you can damage the carbon resistance
layer that is laid down for the wiper to run on. I am not sure if that is
true for the ones TEK uses.

Bill

-----Original Message-----
From: wilson2115@outlook.com
Sent: Tuesday, March 05, 2019 7:13 PM

I have some 91% Isopropyl Rubbing Alcohol sitting around and I have a Tek 577
with dirty horizontal and vertical display controls, I have used this to
clean residue on circuit boards and grime off surfaces and it works quite
well so I was wondering if it could be used to clean the dirty potentiometers
on the 577 curve tracer. 91% seems the best the best I can find. I also have
a can CRC Lectra Clean. What are your thoughts, recommendations? Thanks



--
Dennis Tillman W7PF
TekScopes Moderator


Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?

Chuck Harris <cfharris@...>
 

IPA is so miscible in water that water works just fine for putting
it out. The water dilutes it to a point where it will no longer burn.
A shower is better than a stream as it dilutes and cools the IPA without
spreading it around.

If you blast IPA with a stream of water, it will splash the alcohol
before it dilutes it enough to render it nonflammable.

The MSDS for IPA says use water.

Where water gets you in trouble is nonpolar solvents like gasoline,
kerosene, etc. The solvent is lighter than water, and flaming solvent
floats on the surface of the water spreading the fire.

-Chuck Harris

Gary Robert Bosworth wrote:

I use Isopropyl alcohol for many cleaning jobs - especially solder flux.
Just don't let it get near a source of ignition. It is almost completely
invisible when lit, and requires a specific type of fire extinguisher to
put it out. The fire can spread very quickly as the liquid is as thin as
water and will run all over the place.

Gary


Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?

Gary Robert Bosworth
 

I use Isopropyl alcohol for many cleaning jobs - especially solder flux.
Just don't let it get near a source of ignition. It is almost completely
invisible when lit, and requires a specific type of fire extinguisher to
put it out. The fire can spread very quickly as the liquid is as thin as
water and will run all over the place.

Gary


On Wed, Mar 6, 2019 at 1:10 PM Bob Albert via Groups.Io <bob91343=
yahoo.com@groups.io> wrote:

It looks like the link has been filtered out. Just google the title.
Bob
On Wednesday, March 6, 2019, 11:55:07 AM PST, Bob Albert via Groups.Io
<bob91343=yahoo.com@groups.io> wrote:

For the general information of the group, here is a link to determine
characteristics of various solvents, etc. It provides more information
than you will ever want to have.
The Most Complete Free Material Safety Data Sheet (MSDS) list of chemical
information on the Internet


|
|
|
| | |

|

|
|
| |
The Most Complete Free Material Safety Data Sheet (MSDS) list of chemica...

Looking for MSDS information regarding the chemicals in a commercial
product or a material safety data sheet (MS...
|

|

|




On Wednesday, March 6, 2019, 11:16:45 AM PST, Roy Thistle <
roy.thistle@mail.utoronto.ca> wrote:

Hi:
Lots of companies sell it. I see it on Amazon for 13.00 U.S. a gallon (4,
1 quart plastic bottles.) It is very hydroscopic (absorbs water from the
air readily)… so unless you store it over a drying agent, it will tend
towards 90%, as it picks up water, from the air that gets into the bottle.
The main advantage of IPA is it is cheap (really cheap compared to
proprietary cleaners, like Deoxit). But, another significant advantage is
that it is a pure (other than the little bit of water)… it is a pure
chemical. So, you know what you are using, and can find out what it will do
to what you are using it on (That part needs some research, or advice.).
You can get (download) the Material Safety Data Sheet (MSDS), so you can
determine how it will affect you, how to use it safely, and how it will
affect the environment. The MSDS for many proprietary cleaners don't
significantly identify what's in them (it's proprietary).
Regards







--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247


Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

Kyle Rhodes
 

Agreed Dave. I was surprised to see so many people still use Thunderbird, Eudora, and the like, complaining of attachments, etc.

I’ve been on Gmail since it was launched and I’ve never looked back. It also automagically threads conversations so there aren’t any concerns of who said what with the various complaints I see of people not quoting replies properly....

My $0.02 — everyone should at least try it.

On Mar 6, 2019, at 9:24 PM, David Kuhn <Daveyk021@gmail.com> wrote:

Daniel, I recommend GMAIL. It automatically sorts this forum in to a
"forums" TAB.

Dave

On Wed, Mar 6, 2019 at 1:09 PM Daniel Koller via Groups.Io <kaboomdk=
yahoo.com@groups.io> wrote:

Hi Folks,
This is a test for me to make sure I am re-subscribed, and a warning
to others to be careful.
I use Yahoo mail to read my tekscopes group messages (perhaps I should
not use Yahoo Mail). This morning I *accidentally* clicked on a message
and reported it as spam, then immediately restored it to my inbox realizing
it was the wrong one. It seems groups.io is on a hair trigger because it
sent me the message below. This must be a new setting because...
...I have accidentally reported messages from Tekscopes as spam before,
and this has not happened, and some Tekscopes messages regularly end up in
my spam folder anyway, and I have to check there from time to time. So,
wonder if Yahoo is now reporting when you move a message to spam, or
groups.io is now recording when yahoo sends such a report.
Either way, heads up to everyone that the system is sensitive!
Dennis, is there a way to set up the groups.io system so that it takes
3 or so reports of spam before groups.io unsubscribes a user? Thanks,
Dan


----- Forwarded Message ----- From: TekScopes@groups.io <
TekScopes+owner@groups.io>To: "kaboomdk@yahoo.com" <kaboomdk@yahoo.com>Sent:
Wednesday, March 6, 2019, 10:23:58 AM ESTSubject: You have been removed
from TekScopes@groups.io
Hello,
Because your Email Service Provider reported to us that one or more
messages sent to you from TekScopes@groups.io has been marked as spam you
have been automatically removed from the group. We suggest that you check
your spam box as soon as possible to see if your Email Service Provider has
diverted legitimate messages into it.

You will receive no more emails from that group. If this was a mistake,
you can resume your subscription within the next 7 days by clicking the
following link:

Resume Subscription

Groups.io groups offer several options for controlling how much and what
types of emails to receive. See this Help Center article for more
information.

If this happens repeatedly please check with your email service to learn
about how they decide to send feedback reports to list services (such as
Groups.io groups).

Cheers,
The Groups.io Team






Re: TEST MESAGE. "Fw: You have been removed from TekScopes@groups.io"

David Kuhn
 

Daniel, I recommend GMAIL. It automatically sorts this forum in to a
"forums" TAB.

Dave

On Wed, Mar 6, 2019 at 1:09 PM Daniel Koller via Groups.Io <kaboomdk=
yahoo.com@groups.io> wrote:

Hi Folks,
This is a test for me to make sure I am re-subscribed, and a warning
to others to be careful.
I use Yahoo mail to read my tekscopes group messages (perhaps I should
not use Yahoo Mail). This morning I *accidentally* clicked on a message
and reported it as spam, then immediately restored it to my inbox realizing
it was the wrong one. It seems groups.io is on a hair trigger because it
sent me the message below. This must be a new setting because...
...I have accidentally reported messages from Tekscopes as spam before,
and this has not happened, and some Tekscopes messages regularly end up in
my spam folder anyway, and I have to check there from time to time. So,
wonder if Yahoo is now reporting when you move a message to spam, or
groups.io is now recording when yahoo sends such a report.
Either way, heads up to everyone that the system is sensitive!
Dennis, is there a way to set up the groups.io system so that it takes
3 or so reports of spam before groups.io unsubscribes a user? Thanks,
Dan


----- Forwarded Message ----- From: TekScopes@groups.io <
TekScopes+owner@groups.io>To: "kaboomdk@yahoo.com" <kaboomdk@yahoo.com>Sent:
Wednesday, March 6, 2019, 10:23:58 AM ESTSubject: You have been removed
from TekScopes@groups.io
Hello,
Because your Email Service Provider reported to us that one or more
messages sent to you from TekScopes@groups.io has been marked as spam you
have been automatically removed from the group. We suggest that you check
your spam box as soon as possible to see if your Email Service Provider has
diverted legitimate messages into it.

You will receive no more emails from that group. If this was a mistake,
you can resume your subscription within the next 7 days by clicking the
following link:

Resume Subscription

Groups.io groups offer several options for controlling how much and what
types of emails to receive. See this Help Center article for more
information.

If this happens repeatedly please check with your email service to learn
about how they decide to send feedback reports to list services (such as
Groups.io groups).

Cheers,
The Groups.io Team





Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?

Brad Thompson
 

Hello--


I use 190-proof straight ethyl alcohol (*) to remove rosin flux and clean PC boards.
Pour a little at a time into a working container and promptly close the original
 bottle to minimize absorption of moisture from the air.

(Having experienced a chemically-induced anaphylactic-shock episode,
I'm careful about what I use for cleaners and lubricants.)

73--

Brad  AA1IP

(*) Everclear is one brand-- a fifth (750 mL) lasts a long time.

And no, I never drink the stuff<g>.

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