[GreenKeys] switch mounting systems

[pdwills at cedarknolltelephone.com]

It's been brought up before but the TCI list server is an
excellent source of information for telephone switching
equipment.  There is also a cache of equipment that is
becoming available that has been mentioned on that list.

Go to www.telephonecollectors.org for more information on
the list server.  (TCI publishes and distributes Switchers'
Quarterly.

PDW


----- Original Message Follows -----
From: Joe Stevens <jbs at kadiak.org>
To: amourdutigre <amourdutigre at kc.rr.com>,
"greenkeys at mailman.qth.net" <Greenkeys at mailman.qth.net>
Subject: Re: [GreenKeys] switch mounting systems
Date: Wed, 11 Feb 2009 10:38:06 -0900

> There are steel bars with holes, tapped 12-24, usually
> horizontally  mounted in a standard relay rack.  There are
> steel frames with the  same unit mounting dimensions in
> 1A2 key systems and some other  subscriber equipment
> cabinets.  The multi-voltage power supply I  mentioned
> that puts our ringing, 24 vdc, 10 vac, and 18vac will
> mount  on this system.  The bars are 6.5 inches from screw
> center-to-center  and have 15 holes along the bar per 6.5
> inches for about 11mm  spacing.  Wescom, Telco Systems and
> others made all sorts of units  that would mount on these
> bars.  Perhaps someone else could  contribute a bit of
> history or some more info.  What's with that  weird hole
> spacing?  That supply on ebay is shown on it's side. It 
> would mount with the mounting tabs on top and bottom.  One
> could  fabricate such a system by drilling some small
> angle aluminum.  I've  never seen a source for the
> original bars that mount in 19 inch racks  but I'll bet
> someone has a stash in their closet...
> 
> You might want to investigate
> http://www.switchersquarterly.org
> 
>      ...j0e  WL7AML
> 
> At 09:44 AM 2/11/2009, amourdutigre wrote:
> >Hi again,
> >
> >I have noticed that on the ring signal supplies that they
> all seem  >to have the same type of mounting dimensions.
> Example is this E-bay  >item 200280976107. Is that some
> sort of Western Electric standard? I  >remember as a teen
> seeing surplus "relay racks" being advertised in  >the
> backs of electronics magazines, long before there were any
> such  >things as network servers and the like.
> >
> >Just curious....(I know that this is a TTY forum, but
> there is so  >much in common between TTY, Telegraph and
> telco systems.) >
> >Thank you in advance
> >
> >Joe KB0TXC
> 
> 
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