[Boatanchors] Hickok KS-15750-L1 tube tester schematic needed

[David Harmon]

The Bell System has/had a method of having tools and equipment mfgd by
non-Bell sources.
This apparatus was mfgd to a Bell spec called 'KS'.
Generally....this stands for 'Kearny Specification'.
There is some speculation that the KS spec system goes back to before 1920
and was called 'Kellogg System' at the time.
Later...much of the small tools and equipment was mfgd at the Kearny plant
and the 'KS' meaning morphed into 'Kearny System'.
So..........every relay burnisher, relay adjusting tool, test
sets....everything used by a Bell System employee had a KS number stamped
into it.

AT&T printed procedures and methods called 'BSP'...Bell System Practices'
which was usually a certain test method or a step by step method of an
adjustment or procedure.
In the specific 'practice' for a certain operation there would be mention of
a certain tool or test set called out by the KS-number.
This is to ensure that the correct tool(s) were being used.

This includes all tube testers...........an example being the Hickok mfgd
tube testers that we all love.

For all you non-Bell guys....this is likely more than you ever wanted or
needed to know.....for the Bell guys.....well....yawn...zzzzzzz



73

David Harmon
K6XYZ
Sperry, OK

-----Original Message-----
From: Boatanchors [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of
Jim Haynes
Sent: Tuesday, July 1, 2014 10:42 AM
To: W2HX
Cc: boatanchors at mailman.qth.net; Al Klase
Subject: Re: [Boatanchors] Hickok KS-15750-L1 tube tester schematic needed

On Tue, 1 Jul 2014, W2HX wrote:

> Very interesting that they didn't use "k" notation for thousands. Is 
> that a notation standard that came later than when this tester was 
> designed?

Don't know about that - maybe just lack of a standard.  Western Electric
formerly used the capital omega to mean meghoms and the lower-case omega for
ohms.> ______________________________________________________________
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