[TowerTalk] Fwd: Fwd: tower grounding

[jimlux]

HansLG at aol.com wrote:
> I know concrete is the insulator between railroad tracks. You use the  fact 
> that the wheels connect the tracks as a mean to check where a train is. I  
> suspected though that where were some conductivity although I guess it may not  be 
> considered enough as a good grounding for a lightning strike.
>  


the concrete in railroad ties is specially made to be insulating, for 
just that reason.

google for "low conductivity concrete" for more data than any human 
should want to know...


Jim, W6RMK

> Hans, N2JFS
>  
>