Re: [telecom] Please help me identify this device

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I say the device pictured by Bill Horne is half of a paired Fiber Optic
Storage Loop.  See:

https://hubbellcdn.com/catalogfull/CA05037E-Opti-LoopStorage.pdf

When fiber optic cable is installed on poles, sections are chosen to
be "too long" in case extra length is required later to accommodate
splices, additional equipment and relocations of poles.  The carrier
wants to minimize the chances of having to cut and re-splice the many
individual fibers within each cable, which takes substantial labor and
causes service outages.

Fifty feet or more of fiber is tripled back upon itself between two
poles to "store" that length for future use.  The loop devices are
made of painted metal.  I suppose they could be spring-loaded to
compensate for expansion and contraction, although I have not seen
that feature mentioned in web sources.

The 15- to 20-inch diameter of these devices assures that the fiber is never
bent smaller than its minimum radius which will either degrade data
performance or will crack the fiber strands, making them useless.

Greg Monti
gmonti@mindspring.com

Re: [telecom] Please help me identify this device
On 6/15/2019 11:02 PM, Bill Horne wrote:
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One device on the wire is used for tweeting. RFC1149 also explains how
to use a related version of the device as an avian carrier for IP
packets, though historically it has performed much better with paper
packets performing message-switching function. It also helps plants
propagate seeds and fertilize the ground. It can also be cat food.

The other device is a "showshoe", which, used in pairs, holds a loop
of optical fiber at a large enough bending diameter to not damage
it. This is generally a slack loop, which is released in order to
lower the loop and allow new connections to be spliced onto it while
working near ground level.

Re: [telecom] Please help me identify this device
Re: [telecom] Please help me identify this device - "Greg Monti"

On 6/15/2019 11:02 PM, Bill Horne wrote:
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On 6/15/2019 11:54:03 -0400, Fred Goldstein wrote:

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Agreed.  However of equal importance is the ability to repair the fiber in
case of damage.  If a utility pole is damaged (drunk driver) the entire fiber
cable may be damaged, and individual fibers may be broken.  In such cases it
may be necessary to splice each broken fiber.

The extra slack stored between two snowshoes makes it possible to make the
splice in a convenient location such as inside a utility truck.  The broken
ends of the fiber can be brought into the truck where the splice can be made
under controlled conditions.

If course it's advisable to bring the broken ends of the fiber into the truck
through the same window...

Neal McLain
Brazoria, Texas

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