[TowerTalk] lightning protection at towers and bunkers on former AT&T microwave relay sites

[jimlux]

On 5/20/17 2:12 AM, David J "Dave" Windisch wrote:
> Hi, all concerned:
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> Tks much for the speedy replies and suggestions.
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> Searched NFPA discussion site and found no refs to the Nott Ltd "porcupine
> device" debunking mentioned in this thread.
>
> Anybody have a cite, pls?

You're looking for a citation on the debunking?

  As far as the claims on porcupines or spider balls...from my page on 
lightning and antennas at http://home.earthlink.net/~w6rmk/lightning.htm

Abdul M. Mousa, “The Applicability of Lightning Elimination Devices to 
Substations and Power Lines,” IEEE Transactions on Power Delivery, Vol. 
13, No. 4, Oct. 1998m pp. 1120-1127.

Paper was peer-reviewed by six reviewers under threat of lawsuits. Paper 
states that these devices do not work as the manufacturers claim.


1997 Report on Dissipation Arrays, funded by FAA, Naval Research Labs, 
NASA, and USAF

The report, 274 pp., compiled by 17 scientists and engineers from around 
the world, provides no definitive physical or theoretical evidence that 
lightning dissipation arrays prevent lightning. The USAF presented 
photos showing the arrays being hit by lightning.

  "Scientists Oppose Early Streamer Air Terminals", A paper by Abdul 
Mousa, posted on the referenced site with his permission:

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

"Charge Transfer System is Wishful Thinking, Not Science" from Charles 
Moore, at the Langmuir Lab in New Mexico. Includes the following 
statement: "It is now well established that surface conditions have 
little to do with the initiation of cloud-to-ground lightning 
discharges, high in thunderclouds."

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

William Rison has a nice paper that covers all this. "There Is No Magic 
To Lightning Protection: Charge Transfer Systems Do Not Prevent 
Lightning Strikes "

http://www.lightningsafety.com/nlsi_lhm/magic.pdf

And finally, a paper by Uman and Rakov (who have forgotten more about 
lightning than any reader of this page probably knows) in the Bulletin 
of the American Meteorological Society, Dec 2002 issue: "A Critical 
Review of Nonconventional Approaches to Lightning Protection"

http://www.lightningsafety.com/nlsi_lhm/Uman_Rakov.pdf