They won't work either for the same reason as the porcupines don't work.
You can not discharge the tower or building to the ground, the charge is
coming up from the ground to meet the leader coming down from the cloud.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Máximo EA1DDO_HK1H
Sent: Monday, June 26, 2017 16:04
To: towertalk@contesting.com; sawyered@earthlink.net
Subject: Re: [TowerTalk] Lightning Strikes
Hi all,
I am not sure if all of you know the new lightning protection system,
deployed some time ago in Spain.
Basically, they have created a lightning rod which is a big capacitor. This
capacitor has one end to the air, and the other end to ground.
When a storm is over this device, the capacitor provides a small current
from air to ground, discharging slowly the risk for a sudden strike.
At the end, the strike is not happening, it has been "discharged" before the
strike.
They've called it PDCE or DDCE lightning system.
The original web site, in spanish, is: http://www.dinnteco.com/quees
I think there is a US version as well: http://www.dinntecous.com
It is in use in many places with very successful results.
73, Maximo
http://www.dinnteco.com/images/producto/funciona.jpg
[http://www.dinnteco.com/images/producto/funciona.jpg]
________________________________
De: TowerTalk <towertalk-bounces@contesting.com> en nombre de Ed Sawyer
<sawyered@earthlink.net>
Enviado: lunes, 26 de junio de 2017 14:19
Para: towertalk@contesting.com
Asunto: Re: [TowerTalk] Lightning Strikes
I forgot to add that one of the tower strikes was to a 10M EU antenna at
30ft. Vaporized about 15ft of coax and just small remnants of the balun at
the feed. So much for the cone of protection..
Ed N1UR
Message: 5
Date: Mon, 26 Jun 2017 09:09:24 -0400
From: "Ed Sawyer" <sawyered@earthlink.net>
To: <towertalk@contesting.com>
Subject: [TowerTalk] Lightning Strikes
Message-ID: <000001d2ee7d$70f1e770$52d5b650$@earthlink.net>
Content-Type: text/plain; charset="us-ascii"
I have 3 towers that are all about 30 ft taller than the surrounding trees.
There is one oak tree approaching the height within a 200 ft circle
otherwise it's the tallest around. They sit on a ridge with 180 drop off
exposure from N to South on the east side. Behind them on the West side are
gently sloping climbing terrain that locally peaks about 250 ft higher than
the towers.
I have 25 acres of land with beverages in all directions and antenna/cables
covering about 6 acres (excluding the beverage footprint).
In 12 years, I have definitively recorded 2 strikes on the towers but
probably 10 proximity strikes that have either been seen or created some
kind of induced energy damage to switches.
Its part of the game.
Ed N1UR
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
TowerTalk Info Page -
Contesting<http://lists.contesting.com/mailman/listinfo/towertalk>
lists.contesting.com
TowerTalk is for discussion of tower and HF antenna construction topics. TT
members have lots of helpful information and are happy to share it.
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|
