Yes, we use DC ground antennas.
I am going to move the ground wire from the XR2 to the case instead of
the Board standoff screw.
Someone said the RB411 has a weird ground arrangement and that may be
part of it. I have not been grounding the case either.
Sounds like I need to act like the satellite
Seems to me it is ethernet cable picking up EMP. I seem to lose a lot of
Netgear routers lately. Seems to go right through the POE and gets the
WAN port. Also Transmit side of XR2's. Always see receive side
degrading after mid path lightning strikes even a mile away.
Trango ethernet survives.
ch...@shelbybb.com
http://www.shelbybb.com
-Original Message-
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of Gary Garrett
Sent: Friday, August 07, 2009 2:34 PM
To: sarn...@info-ed.com; WISPA General List
Subject: Re: [WISPA] Direct Lightning
* Gary Garrett wrote, On 8/7/2009 2:34 PM:
Seems to me it is ethernet cable picking up EMP. I seem to lose a lot of
Netgear routers lately. Seems to go right through the POE and gets the
WAN port. Also Transmit side of XR2's. Always see receive side
degrading after mid path lightning strikes
Every RF guy I know ways the lightning dissipators work.
These are nice: http://www.lawrencebehr.net/international/lightmas.php
-RickG
On Wed, Aug 5, 2009 at 11:38 AM, Marlon K. Schafero...@odessaoffice.com wrote:
Nextel spends tens or hundreds of thousands per device.
Our stuff is cheaper
Don't feel too left Chuck out we lost a tower site in the same storm.
Second time in seven years a total loss. Both times we've lost our gear
it has come via the electrical side. Our tower gets hit by a strike or
two almost every storm and we never have issues. This time it literaly
blew the
Since it sounds like this came in on the AC, how about a surge protector
on incoming AC line? We've had sites where the power company's grounding
is so bad we've lost power supply surge protectors in just about every
storm that comes through the area...until we put surge protection at the
breaker
I looked at a Transtector unit a few weeks ago. It's an isolation
transformer that sits outdoors between the entrance panel and our
internal electrical system. It was roughly $1K for the unit. Kind of
wish I would have bought it now. We are the end of the line on the power
grid and have 1-3
An isolation transformer without any protection probably wouldn't
offer much as the higher frequency components of the transient would
probably pass the transformer through capacitive coupling between the
windings. I'm sure the Transtector has some type of protection/
clamping. That price
I did a lot of lightning protection for composite aircraft. After
initial losses on my towers, here's our basic system:
1. All ethernet cables inside or out must be shielded. Ethernet is a
high impedance signal that lightning can couple into easily. We also
prefer gel filled cables for
Whats the majority think the equipment damage from lightning comes
from...electric surge or coupling on the Ethernet? Will running on battery or
solar lessen your chances of equipment damage that much more that it is worth
the cost? I am in the same boat as these guys and have one location hit
Every time I've had lightning damage my UPS is uneffected. APC and
no-name brands.
On 8/6/09, Scottie Arnett sarn...@info-ed.com wrote:
Whats the majority think the equipment damage from lightning comes
from...electric surge or coupling on the Ethernet? Will running on battery
or solar lessen
We have four solar locations, two of which have operated for over five
years without any lightning damage. At least one of them is in a
location and with a mast that I'd consider to be a prime target.
The one that really nailed us was a nearby building strike - it
destroyed an antenna and the
equipment gets fried.
/ Eje
-Original Message-
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of Scottie Arnett
Sent: Thursday, August 06, 2009 9:03 PM
To: WISPA General List
Subject: Re: [WISPA] Direct Lightning Strikes
Whats the majority think the equipment
Where are you located?
4.a Water towers (metal) are usually very well bonded. They make
good ground interconnects since they are welded.
This is an almost exact case of my problem location. It is on top of a 66'
water tower that is on a very high elevation for our area. Not the highest
spot,
Scott Piehn
- Original Message -
From: Scottie Arnett sarn...@info-ed.com
To: WISPA General List wireless@wispa.org
Sent: Thursday, August 06, 2009 9:02 PM
Subject: Re: [WISPA] Direct Lightning Strikes
Whats the majority think the equipment damage from lightning comes
from
On the Motorola list someone said that by using shielded connectors/cable
and soldering the drain wire on both ends they haven't lost anything to
lightning in Colorado OR Costa Rica (per him via NOAA the two of three worst
areas for lightning in North America).
Might just want to pull up that
Nextel spends tens or hundreds of thousands per device.
Our stuff is cheaper than cheap.
Get off of the TOP of the tower. Polyphaser has a great lightning white
paper. If you can be 10' below the top you'll be much more protected.
Also, I've had good luck lately with ferrite beads.
And
We've added a 2/0 (I think) insulated copper wire from the tower top rod
to the grounding at the bottom. This has helped a great deal at the two
towers we've done it at. The current will go mostly through this instead
of mostly on the tower framework (or your shielding). It was about
$3/foot,
We did something similar on a tower where we had a PacWireless SO24-xx
antenna at the top. Ran a piece of 10AWG up so it stuck up about 1 foot
above the antenna. Never took a lightning hit. Can't say so much for
the wind, though. Blew the cover off one day.
jp wrote:
We've added a 2/0 (I
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