[TowerTalk] Challenging Grounding/Bonding Situation ?

[Jim Brown]

On Fri,9/12/2014 3:19 PM, Bill Turner wrote:
> Lightning does not want to go to your house, it wants to go to ground.
> Why give it path into your house?

I agree, but there's a better way of looking at this. Lighting is an RF 
event, not a DC event. Most of the energy in lightning is between 100 
kHz and 10 MHz, so the shield of the coax running between the tower and 
the shack looks like a big inductor to lightning. If we bond to a good 
low resistance, low inductance earth connection at the base of the 
tower, lightning will go there, not to the shack. The radials can help 
by providing capacitive coupling to earth.

73, Jim K9YC