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Joined: May 2007
Posts: 5,058 Likes: 5
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,058 Likes: 5 |
SG was Signal Ground. The ground part of the buzzer circuit (generally associated with an Intercom) Yellow/Orange, Orange/Yellow was the standard for buzzers, but I think Y/Br, Br/Y may have been a secondary buzzer.I'm pretty sure it was the buzzer pair for NT Logic sets.
The 6 button set had so many spares that they almost made up stuff to put on them.
They also had 12 button, 18 button and 30 button sets (Call Directors) that took 50 pr, 75pr and 125 pair feeds - though the 30 button call directors came out with 5 amphenols of 20 pair each - they left off the violets because there were so many spares.
When the 10 & 20 button sets came out, it was a big improvement and then the 30 button (2860 maybe?) came out and ran on "only" 75 pair!
Sam
"Where are we going and why are we in this hand basket?"
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