[RE-wrenches] Lightning protection (was: Grounding on a glacier??)

[Kurt Albershardt]

Check out Nott Ltd. http://www.nottltd.com/lightning.html

I know a couple of RF engineers who swear by these and will not setup a 
tower without them.  We are looking at putting small ones on each end of 
every row on a large array next year.





On 7/22/09 13:57 , toddcory at finestplanet.com wrote:
> NASA had a similar problem on the space station. They used (I think - 
> research this) some kind of static discharge unit on the exterior of 
> the station.
>
> Todd
>
>
>
> On Wednesday, July 22, 2009 6:13am, "jason pozner" 
> <zzyyzzx11 at gmail.com> said:
>
>
>
>
> Hey all,
>
> I am trying to figure out how to mitigate problems found with a 12v 
> 500w simple DC system without a ground.  This system is at 14,500' on 
> Denali (Mt McKinly).  We experienced a somewhat "festive" fireworks 
> display on the 4th of July as static current from a storm seemed to 
> travel through one of the antennae, and energized some radio 
> equipment.  There is no grounded conductor, as there is no grounding 
> electrode, as there is no ground to put it in.  The camp is situated 
> on about 500' of glacial ice.  The conductivity of the ice is 
> questionable, and to make the puzzle a bit more fun the camp is raised 
> and taken down at the beginning and end of every climbing season 
> (Apr-July), though the site is the same.  The loads are primarily for 
> communications for search and rescue purposes, and  reliability, and 
> simplicity are paramount.  I have been exploring the avenue of a surge 
> arrestorsThanks, and was wondering if any of you could make a 
> recommendation on a product that can either be reset or cheap enough 
> to have a few replacements on hand.  Everything is flown in or carried 
> to the site, and repair/replacement needs to be simple enough so 
> non-technical minded personnel can perform and re-set the system.
>
> Thanks,
>
> Jay Pozner
> Nunatak Alternative Energy Solutions
> Crested Butte, CO
> (970) 349-3432
> nunatakenergy at gmail.com <mailto:nunatakenergy at gmail.com>

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