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Joined: Feb 2010
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I have had this old test set since I was a kid, found it in an abandoned warehouse and knew if I didn't rescue it, some scrapper would destroy it.
Ok, here are the flickr links to pics:
overall: [img]https://flic.kr/p/9Z7fmq[/img]

Label: [img]https://flic.kr/p/9Zcr62[/img]

jacks: [img]https://flic.kr/p/9Zcr6p[/img]

I have 1 green test lead for this, and the service tags that were tied to the handle, know it's from the 40's, but don't remember the exact date stamped inside. This was one of the very first items in my collection.

there's one on ebay now for $70, if anyone is interested.

Last edited by Telxonator; 02/22/15 05:01 PM.

Will G.
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ok, so I found the BSP for it from the TCI library: https://telephonecollectors.info/in...-set-j54701b-701-a-b-711-a-b-740-a-b-c-e

Answers most of my questions about this device, would test the different switches in a mechanical PBX, and some other tests.



Will G.
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Not sure as I've never seen this test set, but your link to the CD and SD's look like it may have been used for testing from the cord boards.


Retired phone dude
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If it's what I remember, we called it a "loop and leak" test set, used to test various switches at the switch.

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If it's what I remember, we called it a "loop and leak" test set, used to test various switches at the switch.

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Yeah, looks like it would activate different parts of the switch individually, and show status, etc. Now I want an old PBX...


Will G.
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I have a 200 line step switch for sale.

Send me an email and we'll negotiate a quick sale.

info (at) sibta (dot) com


Arthur P. Bloom
"30 years of faithful service...15 years on hold"

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That sounds cool, but it's doubtful I could afford it, or come pick it up and haul it back. Maybe some day if I ever get a real museum going.


Will G.
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Ahhh a stepper switch. a handful of steel wool and a burnishing tool, instant overtime. Go ahead tell me you never did or thought about it?


John 807
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The weapon of choice would have been a handful of iron filings followed by a liberal dose of Hudson River sea water. Often fantasized about it, especially during the Seven Month Strike...but what (some people) did on the eve of a work stoppage was to un-busy all the line-finders that were busied-out for maintenance, and take the busy book home.


Arthur P. Bloom
"30 years of faithful service...15 years on hold"

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