Date   
SG504

 

Today I was given an SG504. It came without the head and since I already have two working SG504's I won't
bother fixing this one. It works fine with a working head so if anyone is interested in getting it and building
Dave's or Ancel's head make me a offer off list. Note, it does have the knocked off corners of the plastic
front frame which is so common. Shipping will be from Sweden at $28.50 or $38.50 depending on service.
PayPal is OK.

/HÃ¥kan

In memory of Jim Williams, from EDN

Daniel Koller
 

Re: In memory of Jim Williams, from EDN

Dave Casey <dcasey@...>
 

It's a Tektronix current probe and amplifier, a less capable predecessor
of the AM503/A6302. I'll dig around in the catalogs to see if I can find
it...

Dave Casey

On Fri, June 10, 2016 2:45 pm, Daniel Koller kaboomdk@...
[TekScopes] wrote:
http://www.edn.com/design/analog/4442194/Remembering-Jim-Williams--5-year
s-later?_mc=NL_EDN_EDT_EDN_funfriday_20160610&cid=NL_EDN_EDT_EDN_funfrida
y_20160610&elqTrackId=e9eb87b1980d4f96a39f257dbbd918d6&elq=f7194f18052f4a
e4ae1cb1791cf66f0f&elqaid=32634&elqat=1&elqCampaignId=28499

What' that on top of the 547?


Dan

Re: In memory of Jim Williams, from EDN

Dave Casey <dcasey@...>
 

Found it.... P6042. See page 357 of the 1969 catalog.

Dave Casey


On Fri, June 10, 2016 2:45 pm, Daniel Koller kaboomdk@...
[TekScopes] wrote:
http://www.edn.com/design/analog/4442194/Remembering-Jim-Williams--5-year
s-later?_mc=NL_EDN_EDT_EDN_funfriday_20160610&cid=NL_EDN_EDT_EDN_funfrida
y_20160610&elqTrackId=e9eb87b1980d4f96a39f257dbbd918d6&elq=f7194f18052f4a
e4ae1cb1791cf66f0f&elqaid=32634&elqat=1&elqCampaignId=28499

What' that on top of the 547?


Dan

Re: In memory of Jim Williams, from EDN

widgethunter
 

Thank you.
Bernd Schroder

In a message dated 6/10/2016 12:46:43 P.M. Pacific Daylight Time,
TekScopes@... writes:




http://www.edn.com/design/analog/4442194/Remembering-Jim-Williams--5-years-l
ater?_mc=NL_EDN_EDT_EDN_funfriday_20160610&cid=NL_EDN_EDT_EDN_funfriday_2016
0610&elqTrackId=e9eb87b1980d4f96a39f257dbbd918d6&elq=f7194f18052f4ae4ae1cb17
91cf66f0f&elqaid=32634&elqat=1&elqCampaignId=28499

What' that on top of the 547?

Dan





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

Re: In memory of Jim Williams, from EDN

tom jobe
 

Thank you to whomever posted the link to the Jim Williams history story!

The two Analogue Circuit Design EDN series books Jim put out are
wonderful, so see if you can get your hands on a copy of them sometime.

There are two other Jim Williams books written with Bob Dobkin
available. I have not seen them, but I'd bet they are great books too.

tom jobe...

PS The YouTube video of Jim Williams repairing a Tektronix oscilloscope
for a friend is another great one to watch.

Re: In memory of Jim Williams, from EDN

sittners
 

The Jim Williams story is inspirational to many of us and his loss is
equally saddening. For those of you with an interest in Jim, and his pal
and competitor, Bob Pease, it's suggested that you do a search on Paul
Rako. Paul is another Silicon Valley legend who worked directly with Bob
Pease and was a close friend of Jim Williams. Paul also happened to be
an editor for EDN and has written a number of articles on both of these
legends, and has also been presented in a number of youtube videos. Take
a look and you'll find a number of gems to appease your appetites for
color on these two analog greats.


Phil


On 6/10/2016 5:29 PM, Tom Jobe tomjobe@... [TekScopes] wrote:

Thank you to whomever posted the link to the Jim Williams history story!

The two Analogue Circuit Design EDN series books Jim put out are
wonderful, so see if you can get your hands on a copy of them sometime.

There are two other Jim Williams books written with Bob Dobkin
available. I have not seen them, but I'd bet they are great books too.

tom jobe...

PS The YouTube video of Jim Williams repairing a Tektronix oscilloscope
for a friend is another great one to watch.

On 6/10/2016 12:45 PM, Daniel Koller kaboomdk@... [TekScopes] wrote:

http://www.edn.com/design/analog/4442194/Remembering-Jim-Williams--5-years-later?_mc=NL_EDN_EDT_EDN_funfriday_20160610&cid=NL_EDN_EDT_EDN_funfriday_20160610&elqTrackId=e9eb87b1980d4f96a39f257dbbd918d6&elq=f7194f18052f4ae4ae1cb1791cf66f0f&elqaid=32634&elqat=1&elqCampaignId=28499

What' that on top of the 547?

Dan

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



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

Anybody Need a 3WP2 CRT?

ham789@...
 

I'm cleaning out the attic and found a 3WP2 CRT.
I think it goes in the 310 from 1955.
Appears to be new in the Sylvania box, but I have no way to
test it.
I'd hate to send it to the dump if it has value.
I'm open to offers, you pay the shipping from Portland, Oregon.

Thanks, mike

P6137 probe tip

Jeff Woolsey
 

It seems that the point of one of my P6137 probes broke off. I'm not
sure how, but it does make the probe fairly useless. I'm not talking
about the witch's hat thing with the spring hook. I'm talking about the
metal thing about 3-4cm long and about 5mm diameter that screws in to
the rest of the probe body. And not the sheath that screws on to hold
the ground lead in place.

I don't want to buy a whole 'nother probe just to fix this. Is that
possible? Some of the probes I see on thebay are broken as badly or
worse. Perhaps that's the recovery phase of a similar predicament.

Otherwise this poor 300MHz scope gets stuck with 100MHz probes.

--
Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com
Nature abhors straight antennas, clean lenses, and empty storage.
"Delete! Delete! OK!" -Dr. Bronner on disk space management
Card-sorting, Joel. -Crow on solitaire

Re: P6137 probe tip

Dave Casey <dcasey@...>
 

Have a look here:
http://www.tek.com/accessories/oscilloscope-probes/replacement-parts

The part you seek is called the hybrid tip, when not in labeled packaging
it can be distinguished from similar parts by the colors of the
insulation.

Tek part number is 206-0378-00. Available here
http://www.alliedelec.com/tektronix-206-0378-00/70137193/ and here
http://www.testpath.com/Items/Probe-Hybrid-Tip-Assembly-Tip-BLK-Tail-natural-for-P6137-P5050-117-250.htm
for a little over $40.

Regards,

Dave Casey

On Fri, June 10, 2016 10:07 pm, Jeff Woolsey jlw@... [TekScopes] wrote:
It seems that the point of one of my P6137 probes broke off. I'm not
sure how, but it does make the probe fairly useless. I'm not talking about
the witch's hat thing with the spring hook. I'm talking about the metal
thing about 3-4cm long and about 5mm diameter that screws in to the rest
of the probe body. And not the sheath that screws on to hold the ground
lead in place.

I don't want to buy a whole 'nother probe just to fix this. Is that
possible? Some of the probes I see on thebay are broken as badly or worse.
Perhaps that's the recovery phase of a similar predicament.


Otherwise this poor 300MHz scope gets stuck with 100MHz probes.


--
Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com
Nature abhors straight antennas, clean lenses, and empty storage.
"Delete! Delete! OK!" -Dr. Bronner on disk space management
Card-sorting, Joel. -Crow on solitaire







Re: SG504

mosaicmerc
 

Thx for the mention. I don't supply a kit as the unit I make is stub tune calibrated to compensate for the PCB and the connector UHF tolerances and comes completely housed along with a new Lemo 3' cable.That way I can maintain the typical +/- 0.05dB flatness across the full range for all units. Occasionally I can get +/- 0.025dB flatness on a good build when the FR4, detectors and BNCs decide to play nice together.

BTW I now offer a complete SMA unit : SMA-Fem in with SMA Male output version as well.
Not that it works any better, given the tuning, but perhaps it's more convenient for some applications.

All built & calibrated versions (incl. cal. cert.) are available at $110 plus shipping ($7 economy = 4 to 6 weeks), UPS Express Saver = $65 (1 week tracked). Down to around parts for maybe 6 left.
They've gone globe trotting, Brazil, Finland, Canada, USA, Germany, Italy, Australia etc.


Ancel

Shaft Coupling

Joe Laffey
 

Hey all,

I am looking for a Tektronix part 376-0051-01 which is a flexible shaft coupling for a PG502 (part 162 in the PG502 mechanical parts list).

The parts list shows this as having an ID of 0.127 and an OD of 0.375

I can find the 376-0051-00 (without the 01). Does anyone know if this will work?

How do other people repair these couplings? When I got the PG502 this coupling was loose. I tried to tighten it and I seem to have overtightened it and cracked it in half.

Is this coupling supposed to have a plastic part that meshes with the little flatblade-type slot on the end of the pot? Or is it the tightening of the set screws that causes the pot to rotate with the knob side of the shaft? Naturally I don't want to over-tighten another one.

Thanks.

--
Joe Laffey
The Stable
Visual Effects
http://TheStable.tv/?e39337M/

OT: Where have I seen something like this hinge?

 

Hi I hope nobody minds the OT but I've been trawling my failing memory and searching for a solution for something like this http://www.mgcsoft.com/junk/flap_hinge.png. It's plastic and about 1"1/2 by 3". I'm sure I've seen something like it before but can't for the life of me think where. Is there a proper name for it?

Thanks

Gordon

Re: OT: Where have I seen something like this hinge?

stefan_trethan
 

It's called a 3d printing project.

ST

On Sat, Jun 11, 2016 at 10:28 AM, Gordon @GordonW
[TekScopes] <TekScopes@...> wrote:
Hi I hope nobody minds the OT but I've been trawling my failing memory
and searching for a solution for something like this
http://www.mgcsoft.com/junk/flap_hinge.png. It's plastic and about 1"1/2
by 3". I'm sure I've seen something like it before but can't for the
life of me think where. Is there a proper name for it?

Thanks

Gordon


------------------------------------
Posted by: Gordon <@GordonW>
------------------------------------


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

Yahoo Groups Links


Re: OT: Where have I seen something like this hinge?

 

On 11/06/2016 09:37, Stefan Trethan stefan_trethan@... [TekScopes] wrote:
It's called a 3d printing project.
It's a thought if I can't find anything off the shelf. Looking around it's probably more appropriate to call it a swinging arm bracket.

Cheers

Gordon

Re: Shaft Coupling

 

This type of flexible extender was used extensively in Tektronix equipment of the day and are easy to find.
They differ in inner (shaft) diameter of the nylon insert but are otherwise identical.
I assume that you broke the aluminium ring with the set screws by overtightening, which easily happens. You can use the aluminium ring from any of the other shaft diameter varieties.
Feel the slippage of the shaft stopping when slowly tightening the screws and turn another 1/8 - 1/4 turn at most. You'll find that just slightly tightening is sufficient.

Raymond

Re: OT: Where have I seen something like this hinge?

Joe
 

Support or angle bracket?

On Sat, Jun 11, 2016 at 3:56 AM, Gordon @GordonW [TekScopes] <
TekScopes@...> wrote:



On 11/06/2016 09:37, Stefan Trethan stefan_trethan@... [TekScopes]
wrote:
It's called a 3d printing project.
It's a thought if I can't find anything off the shelf. Looking around
it's probably more appropriate to call it a swinging arm bracket.

Cheers

Gordon


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

Re: OT: Where have I seen something like this hinge?

 

On 11/06/2016 13:53, Joe joeshomeworkshop@... [TekScopes] wrote:
Support or angle bracket?
It's a kind of hinge that has a rod sticking out. A bit like a clevis joint but wider at the axle.

Gordon

Re: OT: Where have I seen something like this hinge?

 

On 11/06/2016 13:53, Joe joeshomeworkshop@... [TekScopes] wrote:
Support or angle bracket?
To put it into context http:www.mgcsoft@.../public_html/junk/Base_0.JPG

The clevis joints are too slack. The dual one on the right is stable enough, it's just a bit mickey mouse. I just thought there'd be something out there suitable. I'm sure I've seen something somewhere I just can't remember where.

Cheers

Gordon

Re: OT: Where have I seen something like this hinge?

 

On 11/06/2016 16:02, Gordon @GordonW [TekScopes] wrote:
To put it into context
http:www.mgcsoft@.../public_html/junk/Base_0.JPG
Oops

http://www.mgcsoft.com/junk/Base_0.JPG

Gordon