[TowerTalk] Where to put Lightning Arresters

[Jim Brown]

On 11/10/2017 10:14 AM, David Robbins wrote:
> At the
> entrance to the shack you have lightning arresters that take some of that
> high voltage from the shield and put it on the AC line and coax center
> conductor so there is no voltage difference when it gets to the radio.  No
> voltage difference, no arcing to let out the magic smoke and everyone is
> happy.

Important clarification, David. It is the BONDING of the coax shield to 
the house ground system, AND The proper BONDING of everything in the 
house that solves this problem, NOT the arrestor. The shield bond can be 
provided by nothing more than a coax feedthrough on a panel that is 
properly bonded to the house ground system. The arrestor minimizes the 
DIFFERENTIAL voltage on the coax shield, which protects the front end of 
the radio.

The arrestor, properly installed at the entry panel, does both.

73, Jim K9YC