nanog mailing list archives

Re: Cable/Wireless-Tower Map for the San Francisco Bay Coastside?


From: Tim Pozar <pozar () lns com>
Date: Mon, 14 Jan 2019 20:12:07 -0800

Sizable towers need to be registered with the FAA.  You can go to:

http://wireless2.fcc.gov/UlsApp/AsrSearch/asrAdvancedSearch.jsp

Type in Half Moon Bay and CA for the state for a listing.  Or better yet
the lat lon and radius.

Tim

On 1/13/19 3:29 PM, Yosem Companys wrote:
Hey All,

Does anyone know whether there's a map that shows the
cable/wireless-tower map for the San Francisco Bay Coastside (i.e., from
Montara to Half Moon Bay)?

A few days ago, a truck hit a PG&E post on Highway 92, which traverses
from San Mateo to Half Moon Bay. The accident caused the post to fall to
the ground. 

The Coastside has one Comcast-owned, fiber-optic cable that crosses the
mountains from Silicon Valley to the Coastside. I guess the cable must
run on PG&E posts because not only did the accident cause a blackout in
some areas of the Coastside but also the entire Coastside was left
without almost any Cable TV, Internet, or mobile phone connectivity for
practically 24 hours.

I only have anecdotal evidence, but it seems that there was no Comcast
or Verizon service whatsoever because Verizon leases the fiber-optic
line from Comcast. It also seems that DirecTV and AT&T were not
affected, and the theories vary as to why. Perhaps AT&T uses a
combination of copper wire and wireless to service the area. DirecTV
allegedly leases connectivity from AT&T.

I've also heard that Sprint PCS paid the owner of a building near the El
Granada post office to use it to relay a mobile signal from there. But
when I asked on Nextdoor about the incident no one mentioned Sprint. In
prior discussions, Coastside residents say they avoid Sprint and AT&T
due to their spotty service. And I know nothing about T-Mobile.

The reason I ask is because this is not the first time that Coastside
residents have been left without mobile service, cable TV, and Internet
connectivity. In fact, it seems to be a frequent phenomenon, making me
wonder that if the infrastructure here is so fragile what would happen
in the case of the "Big One" or, God forbid, a Tsunami or major storm
surge. 

I understand that there's a plan for emergency responders to maintain
Internet and mobile connectivity that includes microwave connectivity,
but I have yet to obtain the details. So I'm trying to get as much data
as I can to help local decision-makers figure out how to make the
Coastside more resilient before the next disaster strikes.

Thanks,
Yosem


Current thread: