开云体育

Thanks Colin, they don't have them.
Thanks Geoffrey, if I have to have them made then I'll probably make
them myself at the local rent-a-cnc.
Thanks G?ran.

On Sun, Oct 31, 2021 at 10:08 PM cheater cheater
<cheater00social@...> wrote:

"They" don't make M1.6 at 20 mm length and this size is available from
Conrad as well as multiple other stores. Please don't spread FUD.

I need a length above 20mm.

On Sun, Oct 31, 2021 at 4:41 PM snapdiode via groups.io
<snapdiode@...> wrote:

The reason you can't find them is that no one makes them.



If they don't make 'em, no one does.

"They" don't make M1.6 at 20 mm length and this size is available from
Conrad as well as multiple other stores. Please don't spread FUD.

I need a length above 20mm.

On Sun, Oct 31, 2021 at 4:41 PM snapdiode via groups.io
<snapdiode@...> wrote:

The reason you can't find them is that no one makes them.



If they don't make 'em, no one does.

btw: any "link compressor", as already suggested, must be permanent. this group is really an archive of info to be reference in the future.
i would discourage using one as it is one more thing to eventually go wrong.

No, there is no way to "embed HTML in a Groups.io message" because it's all just plain email, and Groups.io (or the specific group settings, not sure) may strip HTML out (also not sure, but I've never gotten HTML formatted messages through Groups.io).

Maybe you can send HTML formatted messages from an e-mail client, but the web interface doesn't allow it.

-- Jeff Dutky

didn't work. Unless someone knows how to embed html into groupsio message, nevermind.
most people wouldn't use it anyway.
i see no problem with a link, ugly long, or not.

testing something. embedding html link with display text by simply pasting it to the message text.

<a href="/g/TekScopes/photo/252850/3037754?p=Name%2C%2C%2C20%2C1%2C0%2C0" target="_blank">click here</a>

lets see what groupsio does with it. if lucky, we should see "click here" for jeff's long link.

Jim Strohm wrote:

Files should go to the files section, or else to a publicly accessible website. The link should be
provided, and if it’s longer than 15 characters or so, you should consider using one of the link
compressors online.

Tragically the URLs produced by Groups.io itself are ungainly, and tend to be incorrectly parsed by many e-mail clients. You can, apparently, remove the portions of the URL following (and including) the question mark for photos in the photos section, but it would have been nice if Groups.io had included its own link shortening service (or if they had not added the garbage after the basic URL).

as an example, here is a link to a random photo from the photos section:

/g/TekScopes/photo/252850/3037754?p=Name%2C%2C%2C20%2C1%2C0%2C0

and here is the same link, but with the unnecessary prarameter stripped off:

/g/TekScopes/photo/252850/3037754

both links will lead you to the same picture, so why is the parameter there?

-- Jeff Dutky

Ditto. Files should go to the files section, or else to a publicly accessible website. The link should be provided, and if it’s longer than 15 characters or so, you should consider using one of the link compressors online.

Incidentally, if your app gives you a long link with the file name embedded, test to see whether you can truncate all the characters after your file name. That extra garbage is just spyware code.

73
Jim N6OTQ

Sent from my quenched-gap spark transmitter.

I agree that the demands on the displays are minimal, and would go further
to say that this is not where the core value of the 57x series lies. When I
discovered my 577 D2 had a weak tube, and before I had discovered a 51xx
donor unit, I was contemplating some kind of digital display module. As
Walter says, the technical specs are pretty forgiving. I recall the 577
boils things down to a 500mV/division signal for both axes, I thought I
could buffer these easily and drive <something>.

Since I have a D2, that I actually use to measure components, I might still
do something, if only to get hard copy and part comparison capabilities.

I have seen at least one 576 for sale on eBay where it looks like someone
already made some kind of mod providing a USB interface to a laptop. I did
not find any details as to whether this is a widely available commercial or
open source mod, and I suspect the 576 is slightly more interesting because
it can lend itself to direct reporting of critical settings (because it
already reports them via the fiber-optic display.)

On Sun, Oct 31, 2021 at 10:00 walter shawlee <walter2@...> wrote:

Looking at the Tek curve tracer models and schematics, I see that the
actual requirements for the tubes are very modest. No high frequency
performance is required, a flat face IS required, and HV potentials are
LOW, so many tubes could be adapted to work.

For example, in the 575, the tube has the dynamics (and pinout) of a
readily available 5ADP1, but has the vert/horiz deflection on the neck. In
reality, a 5ADP1 could probably be used there with 300 ohm twinlead
bringing the deflection back to the socket. There is no geometry pin, but
the 5ADP1 has good geometry to start with, so I think that is a doable
conversion.

In the 577 again the tube is not critical. A tube from a simpler low end
5K frame should be adaptable without too much grief, but the on screen gain
might have to be adjusted. Again, the CRT is nothing special in terms of
requirements, and there should be several possible subs with available 5K
tubes. I would expect the lowest end 5K frames to be the MOST suitable
organ donors. The 576 will be more complicated due to size and some odd
CRT connections, but again, a low end 5K CRT should be adaptable, although
the graticule and gun connections will be different.

I don't have either of these here to experiment with, but I think these
conversions could be done by most of the people here on the list, and
should allow someone that really wants to keep their unit running in
business. I am happy to try and assist anybody that wants to do it.

all the best,
walter (walter2 -at -sphere.bc.ca)
sphere research corp.





--

Andy

On Sun, Oct 31, 2021 at 06:02 PM, Paul Amaranth wrote:

The 5103 D10 and D11 display units are directly interchangeable with the 577
display unit. I have a D11 storage module that I want to put on my 577. The
only difference is the scope units have the callibration loop on the front.

I've done exactly that with my non-storage 577 a number of years ago. Very easy to do and the calibration loop on the front makes for very simple calibration...

Raymond

In the 577 again the tube is not critical. A tube from a simpler low end 5K frame should be adaptable without too much grief, but the on screen gain might have to be adjusted. Again, the CRT is nothing special in terms of requirements, and there should be several possible subs with available 5K tubes. I would expect the lowest end 5K frames to be the MOST suitable organ donors. The 576 will be more complicated due to size and some odd CRT connections, but again, a low end 5K CRT should be adaptable, although the graticule and gun connections will be different.

I don't have either of these here to experiment with, but I think these conversions could be done by most of the people here on the list, and should allow someone that really wants to keep their unit running in business. I am happy to try and assist anybody that wants to do it.

all the best,
walter (walter2 -at -sphere.bc.ca)
sphere research corp.

The 5103 D10 and D11 display units are directly interchangeable with the 577 display unit. I have a D11 storage module that I want to put on my 577. The only difference is the scope units have the callibration loop on the front.

Paul

--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows

Siemens-Kontaktsatz-W?hlerfett V (Vaseline)

The reason you can't find them is that no one makes them.

If they don't make 'em, no one does.

Sorry, they dont have them that size.
G?ran

On 2021-10-31 11:00 a.m., walter shawlee wrote:

Looking at the Tek curve tracer models and schematics, I see that the actual requirements for the tubes are very modest. No high frequency performance is required, a flat face IS required, and HV potentials are LOW, so many tubes could be adapted to work.
For example, in the 575, the tube has the dynamics (and pinout) of a readily available 5ADP1, but has the vert/horiz deflection on the neck. In reality, a 5ADP1 could probably be used there with 300 ohm twinlead bringing the deflection back to the socket. There is no geometry pin, but the 5ADP1 has good geometry to start with, so I think that is a doable conversion.
In the 577 again the tube is not critical. A tube from a simpler low end 5K frame should be adaptable without too much grief, but the on screen gain might have to be adjusted. Again, the CRT is nothing special in terms of requirements, and there should be several possible subs with available 5K tubes. I would expect the lowest end 5K frames to be the MOST suitable organ donors. The 576 will be more complicated due to size and some odd CRT connections, but again, a low end 5K CRT should be adaptable, although the graticule and gun connections will be different.
I don't have either of these here to experiment with, but I think these conversions could be done by most of the people here on the list, and should allow someone that really wants to keep their unit running in business. I am happy to try and assist anybody that wants to do it.

Walter,

You're an (inter)national treasure and help make this list as invaluable as it is. Thanks for the informative post. I don't own a curve tracer but information like this can inspire all kinds of adjacent projects.

compliments of the season,
--Toby

all the best,
walter (walter2 -at -sphere.bc.ca)
sphere research corp.

These people may be able to supply something:



Geoff.

Looking at the Tek curve tracer models and schematics, I see that the actual requirements for the tubes are very modest. No high frequency performance is required, a flat face IS required, and HV potentials are LOW, so many tubes could be adapted to work.

For example, in the 575, the tube has the dynamics (and pinout) of a readily available 5ADP1, but has the vert/horiz deflection on the neck. In reality, a 5ADP1 could probably be used there with 300 ohm twinlead bringing the deflection back to the socket. There is no geometry pin, but the 5ADP1 has good geometry to start with, so I think that is a doable conversion.

In the 577 again the tube is not critical. A tube from a simpler low end 5K frame should be adaptable without too much grief, but the on screen gain might have to be adjusted. Again, the CRT is nothing special in terms of requirements, and there should be several possible subs with available 5K tubes. I would expect the lowest end 5K frames to be the MOST suitable organ donors. The 576 will be more complicated due to size and some odd CRT connections, but again, a low end 5K CRT should be adaptable, although the graticule and gun connections will be different.

I don't have either of these here to experiment with, but I think these conversions could be done by most of the people here on the list, and should allow someone that really wants to keep their unit running in business. I am happy to try and assist anybody that wants to do it.

all the best,
walter (walter2 -at -sphere.bc.ca)
sphere research corp.

Bru,

I have used for audio applications, Fader Lube from DeoxIT.



Dallas

I?ll do that later this evening.
G?ran

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