craft-boun...@mailman.qth.net On
Behalf Of Bill Frantz
Sent: Friday, August 4, 2023 3:32 PM
To: Elecraft List
Subject: Re: [Elecraft] A dumb question about lightning
While you are trying to make sense of the best practices lightning protection
documents:
N0AX’s ARRL book “Grounding and Bonding for
While you are trying to make sense of the best practices lightning protection
documents:
N0AX’s ARRL book “Grounding and Bonding for the Radio Amateur”
Motorola’s STANDARDS AND GUIDELINES FOR COMMUNICATION SITES
Not sure you got an answer to your question ... two rules of thumb:
1. Follow the NEC, it's incorporated in building codes, essentially the
law, and failure to do so could possibly invalidate your insurance claim
should you need to file for damages.
2. Read and use the techniques and
Hi, Everybody,
I greatly apologize for escalating the list traffic with my question on
lightning. I merely wanted to get your thoughts on disconnecting equipment in
addition to grounding and bonding. And the overwhelming consensus-- in both
public and private responses-- is that yes, in fact,
e and more incorrect with the telling or writing.
73
Bob, K4TAX
Message: 20
Date: Mon, 31 Jul 2023 13:20:06 -0700
From: Fred Jensen
To: Geoffrey Feldman
Cc:elecraft@mailman.qth.net
Subject: Re: [Elecraft] A dumb question about lightning
Message-ID:<87985aa1-b606-cec8-f07c-5edbadbdc...@gmail.com&
e
telling or writing.
73
Bob, K4TAX
Message: 20
Date: Mon, 31 Jul 2023 13:20:06 -0700
From: Fred Jensen
To: Geoffrey Feldman
Cc:elecraft@mailman.qth.net
Subject: Re: [Elecraft] A dumb question about lightning
Message-ID:<87985aa1-b606-cec8-f07c-5edbadbdc...@gmail.com>
Content-Type: text/plai
. Schmidt
email: b...@wjschmidt.com
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Jim Brown
Sent: Monday, July 31, 2023 5:25 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] A dumb question about lightning
On 7/31/2023 2:14 PM, jerry wrote:
> Interest
On 7/31/2023 2:14 PM, jerry wrote:
Interesting. Suppose the service entrance is at one end of the house,
and the ham shack at the other end? I don't think it's physically
possible to provide a low inductance path that's 60 feet long, is it?
I've posted a link to my tutorial, which covers
These kinds of questions are exactly why there is an entire ARRL book on the
subject.
Short version, you need a system that provides both a safety ground for the AC
power wiring and an RF ground for lightning protection.
In 2020, both the CZU Lightning Complex and SCU Lightning Complex fires
Interesting. Suppose the service entrance is at one end of the house,
and the ham shack at the other end? I don't think it's physically
possible to provide a low inductance path that's 60 feet long, is it?
Would a solution be to DC-isolate the station from the grounded
antenna?
Say with a
Hello Fred, I am getting ready to put up a hex beam. I’m going to put it on a
31 foot self supporting aluminum mast from US towers. The mast sits on a base,
and the base will sit on a concrete pad. that is 4 ft.² and 6 feet deep. Would
you offer me a little advice on grounding, for lightning
Be very careful of advice regarding lightning protection. There are
some very good sources, starting with the NEC and including material
from ARRL. Some is somewhat non-intuitive. For example, the NEC
requires that any additional "earth electrodes" [aka ground rods] be
bonded to the service
Geoff,
I certainly understand your "do it right" approach...the impossible:
8 ft ground rods -- I have bedrock at 36-42". When I put the tower up, I
tried. I rented a heavy SDS hammer drill and, despite hours of trying,
never got deeper than 5 ft. And what good is a single, shallow rod in
First thing and foremost - switches are mostly not relevant to protection.
Energy that can travel 1000' through the sky is likely to continue across
most switches. So, the utmost of safety is what you indicated you did -
disconnect. By disconnect, I mean either disconnect outside the
14 matches
Mail list logo
