[RFI] Lightning Protection

[KD7JYK DM09]

"I asked them about these corona brushes and was told that they are 
ineffective. Once the electric field exceeds about 50-100 kV per meter, 
everything -- grass, trees, fences, antennas -- are all in corona and the 
air is about as "saturated" with corona ionization as it can get. These 
corona brushes have no effect"

Several of htese at a site won't lower the potential in the immediate area 
preventing charges in the 50-100 kV per meter range?

I see the diasharge brushes on remote sites, radar, repeaters, surveillance, 
even airports surrounded by towers with brush arrays a few tens of feet 
across?

Not effective at all?  What about a row of air teminals on a house?

Kurt