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block question

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jeffmoss26

Technical User
May 7, 2002
334
US
The phone tech was at work today, and he was rewiring some stuff to an old block. It had 6 pins across but was not split like a typical 50 pair block is. What kind of block would this be. It had one set of pins turned in to the right side and 5 sets turned in to the left. Never seen one like this before.


jeff moss
 
66B125

Was it larger that your standard 66 block, and did not have the standoff bracket? Typically used in 1A2 installations for the "feature" block, where you brought a cable from the KSU to the side with the pins facing differently from all the others, and then ran jumpers from the other side to the blocks that held the cables leading off to the phone sets. In 1A2 you ran a 3-pair jumper from the feature block to the station block for each line that was to appear on a button on the set, then other jumpers for intercom, busy fields, etc.

Now days, it's good if you need to jumper the same line or lines to several cables, again because you can have the line land on the block once on one side, and take up to 5 jumpers to other cables from the other side.

 
That's exactly it. It was probably used for a 1A2 in the 1950's when the school was built, since there are a couple 25 pair cables connected to it, and some stations (analog phones). The tech used a newly installed 25 pair cable and a new 66MI50 block for some added digital stations.

jeff moss
 
These are also sometimes refered to as bunch blocks,
probably because you can put a bunch of connections down the same.
They are still available in various sizes.
 
They make really small ones, I believe with 6 total conductors vertically. Those are great in houses when you want to distribute a line to a lot of different places, because you can bring it in on the left and then distribute it to 5 different locations.
 
These are also handle to distribute out a dial tome line to offices for fax, dial up modem, etc....

Hey Jeff, are you from Independence VA? I knew a Jeff Moss there years ago....

Randy
 
RandyVSP

In past readings on posts this Jeffs only about 15
 
BTW any ideas on What a12 systsystems go for now. Collectors? i just took out an old a12 someone said its a coolectors item---- Maybey the phones but the system?
 
I just turned 16 last week. I am from Cleveland, Ohio

jeff moss
 
Happy belated birthday :) Got the 15 from a post a while back. might be wrong you asked for peoples wire experice. Or worst instals.
 
Happy B day Jeff....

There is another Jeff Moss I knew years ago in the boy scouts...

Randy
 
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