[Hidden-tech] T1 --> Wireless neighborhood down in Levrett

[Town Websites]

First place to check, if there is a stock modular power supply, is to
replace the power supply, or if you've got a voltage meter and inclination
test the voltages first.  The wires in are more likely the source of the
spike than internal induction.   This is a reasonable guess when a PC fails
after a storm.  However, even if replacing power does seem to solve a
problem , consider the associated electronics on borrowed time, as they
could have damage that will show up under the next small stress conditions.

A good surge suppressor might avoid this category of problems next time.  If
you know your building took a hit and you're lucky enough that you equipment
wasn't damaged, replace the surge suppressors so they'll work again next
time.

Good luck.

Charlie



-----Original Message-----
From: hidden-discuss-bounces at lists.hidden-tech.net
[mailto:hidden-discuss-bounces at lists.hidden-tech.net] On Behalf Of
ussailis at shaysnet.com
Sent: Wednesday, June 16, 2010 7:05 PM
To: davidk at cs.umass.edu; hidden-discuss at lists.hidden-tech.net;
kathleen at lugoscharchitect.com
Subject: Re: [Hidden-tech] T1 --> Wireless neighborhood down in Levrett

   ** Be sure to fill out the survey/skills inventory in the member's area.
   ** If you did, we all thank you.


Here is a potential answer to what might have happened.

Lightning has several forms. One is taking a lightning hit by induction.
This is not at all like a direct hit. Lightning passes by and induces a
goodly voltage into a power line, wire, or antenna. It will destroy
sensitive electronics. I lost a FAX machine, several modems, and a phone
once to this.

Now, if you have a damaged router or WiFi board, no amount of software
repairs or changes will fix it. For a system like yours, I would have a
couple of known good WiFi cards, wrapped in aluminum foil, in ESD bags,
placed in a drawer. Get one of these and swap out until the system works.

Remember the old repair rule: Make one change at a time, then test. Then
should be able to find the problem. 


Jim Ussailis
jim at nationalwireless.com


PS At some point you might consider WiMAX. It is an up & coming system. You
might also look into WiFi 802.11a. It is on a different frequency (less
interference) and allows up to 4 watts + antenna gain. Don't let the 11 mB
be a problem, your T-1 ain't that fast.

Original Message:
-----------------
From: David Korpiewski davidk at cs.umass.edu
Date: Wed, 16 Jun 2010 12:24:47 -0400
To: hidden-discuss at lists.hidden-tech.net, kathleen at lugoscharchitect.com
Subject: [Hidden-tech] T1 --> Wireless neighborhood down in Levrett


   ** Be sure to fill out the survey/skills inventory in the member's area.
   ** If you did, we all thank you.


Hi everyone,
    In Levrett, there are a series of homes that share the internet by 
having a single T1 line that comes in to one of the homes and a wireless 
transmitter shares the internet with the rest of the neighborhood.   On 
one of these houses, the wireless receiver doesn't appear to be picking 
up on a signal anymore since the last big storm.

    I'm looking for someone who has experience in this type of setup and 
can provide some troubleshooting/repair.   If you have experience please 
respond to me and Kathleen (CC'ed above).   This isn't a normal wireless 
setup, so if you only have experience with home based routers, this 
isn't for you.

Thank you
David
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