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Finger Stock - spectrum HP 8558b good but missing part

 

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Not sure if this will help you or others but I have several NOS in sealed bags 300" lengths of Tech-Etch finger stock, 187P28-300-09

A PDF that describes the physical dimensions of the fingers is in the following document although the coating of mine with be different. I have the -09 coating which is a shiny nickel (I think) vs bare copper etc. The last two digits describe the coating etc. If you need some contact me off line.

Gedas, W8BYA

Gallery at 
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 9/4/2019 12:10 AM, Greg Muir via Groups.Io wrote:

Exact replacement finger stock in strip form:

Tech Etch part number 75RE

The problem is obtaining it in small quantities.? They only normally stock it in the the Beryllium copper material.? Stainless steel is a special order.

Greg

 

HP used those fingers on a variety of other switches and, while it might be a shame to scavange them from a working part, that could be done. Below is one example.



Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Gedas" <w8bya@...>
To: [email protected]
Sent: Wednesday, September 4, 2019 9:32:41 AM
Subject: [HP-Agilent-Keysight-equipment] Finger Stock - spectrum HP 8558b good but missing part

Not sure if this will help you or others but I have several NOS in
sealed bags 300" lengths of Tech-Etch finger stock, 187P28-300-09

A PDF that describes the physical dimensions of the fingers is in the
following document although the coating of mine with be different. I
have the -09 coating which is a shiny nickel (I think) vs bare copper
etc. The last two digits describe the coating etc. If you need some
contact me off line.



Gedas, W8BYA

Gallery at
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 9/4/2019 12:10 AM, Greg Muir via Groups.Io wrote:
Exact replacement finger stock in strip form:

Tech Etch part number 75RE


The problem is obtaining it in small quantities.? They only normally
stock it in the the Beryllium copper material.? Stainless steel is a
special order.

Greg
 

Gedas,

The finger stock you show in your pdf is exceptionally large for the application and is of a different profile.? I'll include the pdf of the correct finger stock.

Greg

75RE Spherical Radius Finger Stock Engineering Drawing.pdf
75RE Spherical Radius Finger Stock Engineering Drawing.pdf

 

I seem to recall using some of that stuff to replace the missing contacts on my 8569B SA

Jim


On Wednesday, September 4, 2019, 7:33:38 AM PDT, Gedas <w8bya@...> wrote:


Not sure if this will help you or others but I have several NOS in sealed bags 300" lengths of Tech-Etch finger stock, 187P28-300-09

A PDF that describes the physical dimensions of the fingers is in the following document although the coating of mine with be different. I have the -09 coating which is a shiny nickel (I think) vs bare copper etc. The last two digits describe the coating etc. If you need some contact me off line.

Gedas, W8BYAGallery at Light travels faster than sound....This is why some people appear bright until you hear them speak.
On 9/4/2019 12:10 AM, Greg Muir via Groups.Io wrote:

Exact replacement finger stock in strip form:

Tech Etch part number 75RE

The problem is obtaining it in small quantities.? They only normally stock it in the the Beryllium copper material.? Stainless steel is a special order.

Greg

 

In the groups io photos section I uploaded (2 years ago or so) photos of my repair..."8660c fingers and switches"

Jim

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