[TowerTalk] Overhead Dipole = Lightning Protection?

[Keith Dutson]

Indeed, you may have stumbled upon the loophole for those living in a home
controlled by HOA/CCR.  "But sir, it is to protect the bomb in my house from
lightning."  <grin>

Keith WD5CXL 

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of doc
Sent: Wednesday, July 07, 2004 10:20 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Overhead Dipole = Lightning Protection?

Considering the observations below we have yet another real good
justification for that dipole we'd like to sling over the house or across
the patio from tower to tree ... "But Honey, it's a lightning protection
device."

Seriously, I can see a doublet strung from the planned location of my tower
to a really tall pine tree on the other side of the house.  The doublet
would be about 10 feet West of the back of the house, the feedline could
droop back toward the tower (I know, not a pure right- angle departure from
the feedpoint), and then pass through a remote tuner or balun and through
Polyphaser device mounted near the base of the well-grounded tower
afterwards following the rest of the cables to the entry panel and then into
the radio room.

Hmmm.  This could work!

73, doc kd4e

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

http://www.lightningsafety.com/nlsi_lhm/InstallRods.html

4. OPTIONS FOR CONSIDERATION

According to local situations, the following alternatives to ordinary
lightning rods may be useful:

     (a) The electric power industry has adopted designs of tall masts or
overhead grounded shield wires located above the structure to be protected.
This can be observed on most high voltage power lines and on most
distribution and substations. Here, the idea is to collect the lightning
ABOVE the structure, not directly on it.

(b) Following is from US Air Force AFI 32-1065, section 14.5, p. 10
"Explosives Facilities .that do not use structural steel as air terminals
must use either a mast system or an overhead wire system. 
Since these systems provide better protection, and maintenance is easier,
consider using this type of protection for other kinds of facilities."
_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.

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