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

[manualman at juno.com]

Actually there were many tools and parts used in the Bell System that did
not have a KS-number. If it was manufacturered in a WE plant, many times
it had an Apparatus Code (i.e. 601A capacitor, 352A tool, 417A tube,
etc.). If it was a "sub-part" (a part along with others parts that made a
complete item) it may only have a "comcode" (9 digit number) assigned to
it. If it was a set of completed assemblies gathered together into a
larger assembly or frame, that larger assembly or frame would be assigned
a "J-code" number or an Apparatus Code depending on the target market.
The KS-15750 was designed to WE specs and manufactured by Hickok. All
parts in that tester had to approved by WE for use in that tester.

Pete, wa2cwa
www.manualman.com

On Tue, 1 Jul 2014 11:18:56 -0500 "David Harmon" <k6xyz at sbcglobal.net>
writes:
> 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
> ormerly used the capital omega to mean meghoms and the lower-case 
> omega for
> ohms.> 
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