[RFI] ISOBAR

[David Robbins]

the one thing that many people forget is that it is not just the impedance, its the distance.  The size of a typical shack, house, and grounding system, is NOT small with respect to the wavelengths in play with significant energy, so you can't use a simplified impedance to model the protection.  You must take into account the rise time vs distance between connections and understand that just because you have a ground wire connecting two things they can be at significantly different voltages during a lightning stroke.


Sep 18, 2012 10:47:14 AM, svetanoff at earthlink.net wrote:
>Since all of the station equipment is tied (bonded) to
>the one ground system (or should be), the lower the net Z to ground means
>the less voltage developed differentially between grounded connections and
>power feeds, antenna inputs, and so forth. ness of that approach.