I know I can throw a temp chunk of fiber on the ground and have things up
and running in an hour or two.
-----Original Message-----
From: Robert
Sent: Monday, February 25, 2019 9:23 AM
To: af@af.afmug.com
Subject: Re: [AFMUG] Earthquake Fiber vs Microwave
I would think that depends hugely upon the geography of the fiber run.
Fault zones in california can shift 9-12 feet in very tight shear in a
big one. Look at some of the pictures from the last quake in AK and
you can see 15-18 foot displacements in x y and z. Would be tough to
have confidence that your fiber would not get sheared in those
conditions. Might be tough to have a microwave link survive that as
well but if the tower isn't 100 feet tall and is anchored in bedrock
might not have as much trouble. I don't know of any towers that went
down in the Loma Prieta quake, the last large one I experienced. But
there might be some people on this list that have more data on that.
On 2/25/19 8:10 AM, ch...@wbmfg.com wrote:
Trying to make the case that underground fiber will survive an earthquake
better than mountain top microwave for public safety uses.
-----Original Message----- From: Seth Mattinen
Sent: Monday, February 25, 2019 9:07 AM
To: af@af.afmug.com
Subject: Re: [AFMUG] Earthquake Fiber vs Microwave
On 2/25/19 7:07 AM, ch...@wbmfg.com wrote:
Anyone have some stories, perhaps from Alaska on earthquake survivability
of fiber and microwave?
I have to go to a meeting with some lawmakers later in the week to make
the case that fiber has some slack, fiber can be fixed quickly. Towers
can tilt or tumble. Antennas can get misaligned. And sometimes it is
impossible to get to a snowy peak for a weak during a storm.
Fiber is scalable. Microwave can be jammed and intercepted. Etc etc.
Trying to be truthful and not gaslight anyone.
Just make sure your fiber doesn't run in conduit attached to any Cypress
Street Viaduct like structures.
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