[Towertalk] Lightning Protection

[Tom Rauch]

> In the past, I remember you mentioning the use of common mode
> chokes (air wound) for lightning protection. 

I always use air core solenoid chokes when leaving a problem area, 
like the bottom of my 300 ft tower.

Broadcast stations with insulated towers often do something similar, 
even if it is just a big one turn loop loop.

The impeding coil or choke goes on the tower or antenna side of the 
ground point. It adds series reactance, which makes any shunting 
impedance more effective.

Almost anything you do to improve RF performance and reduce RFI 
improves lightning immunity. They generally go hand-in-hand.73, Tom 
W8JI
W8JI@contesting.com