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Re: [TowerTalk] Grounding mast?

To: jim Jarvis <>,
Subject: Re: [TowerTalk] Grounding mast?
Date: Wed, 30 Jul 2008 18:59:31 +0000
List-post: <">>

 NEC Chapter 8 requires a separate ground from the mast, down the tower to the 
ground rod. Since the mast is above the rotor that's where it is connected. I'm 
not saying it works better or worse.Sure can't hurt. I've had my SPG set up 
this way for 5 years never a problem.YET! Hope this helps.

73 Joe K4XZ

-------------- Original message from jim Jarvis <>: 

> Been following the SteppIR v. Stepper.IT thread while travelling. 
> Had a few minutes to browse both websites, this morning, 
> and came across a short commentary about lightning and ESD protection 
> for the steppIR. 
> It raises the question of static charge buildup due to wind motion, 
> in (one assumes) 
> drier climates. Points out lack of conductivity across rotors, and 
> asserts 300-500V per meter 
> above ground as the possible potential buildup. Routed into the 
> shack, if the charge isn't 
> bled off. 
> The discussion recommends a positive ground between the mast, and the 
> tower, as well 
> as a good dissipative ground for the tower itself, as lightning 
> protection would dictate. 
> The physics of this are real. What amazes me is that this is the 
> first time I'm seeing the 
> discussion, in these terms. Does anyone actively ground their mast, 
> across the rotor? 
> Firsthand experience? 
> n2ea 
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