[Elecraft] Elecraft Digest, Vol 196, Issue 17 - Lightning

Jim Brown jim at audiosystemsgroup.com
Tue Aug 18 17:43:50 EDT 2020


On 8/17/2020 3:17 PM, Bill Frantz wrote:
> hat I don't know is the relation between radio and other electronic 
> equipment and a lightning rod installation. For example, do you bond the 
> radio grounds to the lightning rod grounds? At ground level, or anywhere 
> along the wire?
> 
> Too bad I can't find my copy of N0AX's book on the subject. Need to do 
> more digging.

Hi Bill,

Here are slides for a talk I've done at Pacificon, Visalia, NCCC, and 
other local clubs. I worked extensively with Ward on the book. While I 
was still working, I gave tutorial workshops on the topic to companies 
installing large sound and video systems.

http://k9yc.com/GroundingAndAudio.pdf

The short answer is that EVERY earth connection MUST, both BY LAW 
(electrical safety codes) and by good engineering practice, be bonded 
together. More of everything is better. :) That means rods, building 
steel, metallic cold water plumbing, entry for power, telco, CATV, 
antennas. It's also critical that all equipment that is interconnected 
be bonded together. That means short, fat copper.

73, Jim K9YC


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