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best grounding technique

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Bob McGraw - K4TAX

best grounding technique

If one is grounding on the inside for lightning, you best think
otherwise! Any and all grounding for lightning should be done outside
of the structure. You should have lightning protection devices on all
coax, balanced, and rotor lines installed BEFORE they enter the structure.

Internal grounding or bonding is to keep all equipment at the same
potential.

73

Bob, K4TAX

Message: 10
Date: Sat, 20 Mar 2021 18:11:57 +0200
From: Victor Rosenthal 4X6GP<[hidden email]>
To:[hidden email]
Subject: Re: [Elecraft] best grounding technique
Message-ID:<[hidden email]>
Content-Type: text/plain; charset=utf-8; format=flowed

Having a bus that runs the length of an operating desk with all the
equipment connected to it by short straps is not that different from
bonding each piece of equipment to the ones next to it. But it allows
you to remove one unit without breaking the "chain."
This is contrasted to the "star" system, in which each piece of
equipment is grounded to a central point with a relatively long ground lead.

73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
On 20/03/2021 17:57, Wes wrote:

> Interesting.? I don't have (and probably won't buy) the book, but here
> we have a disconnect---no pun intended.
>
> If Rick's comment is accurate, and I have no reason to think otherwise,
> then what it states is in direct conflict with what one co-author (K9YC)
> has preached for years, that each box should connect to the next and
> there is only one connected to the ground system.? He even calls it
> madness to use individual connections to a common ground bus.
>
> This pretty much sums up why I'm not in the market for the book.
>
> Wes? N7WS
>
>
> On 3/19/2021 2:44 PM, Rick NK7I wrote:
>> The ARRL book on Grounding and Bonding is very clear.? Each piece of
>> gear has its OWN wire/strap to a common grounding point (a copper pipe
>> mounted on a wall is a common method, that being connected to the
>> system ground; everything to the building safety ground, more ground
>> rods every 2x the depth of the rod).
>>
>> Look at it this way, say a discharge comes in through your antenna,
>> into the radio, connected to your computer and other devices.? Would
>> you prefer that energy goes only through the radio to ground (losing
>> the radio) or in a series through everything else in the shack too?
>> The 'fan' mode you mention is preferred, give that energy EVERY chance
>> to seek ground BEFORE it passes through your gear.
>>
>> Energy shunts (PolyPhase devises for example) at the antenna entry
>> point are another must.? One per feed.
>>
>> I suggest reading that book, several times (it's complex) for a better
>> understanding.
>>
>> 73,
>> Rick NK7I
>>
>> On 3/19/2021 2:06 PM, Robert G Strickland via Elecraft wrote:
>>> It seems that there are two ways of running grounding wires in the
>>> shack: FAN - from a common ground point, individual grounding wires
>>> are run to each piece of equipment; LINKING - a ground wire is run
>>> from each piece of equipment to the next and eventually ending in a
>>> common ground point. What's the group wisdom on the relative merits
>>> of these two approaches to running grounds in the shack?
>>> ...robert

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Gary Memory

Re: best grounding technique

Many years ago I contracted with Motorola for a large repeater
communications system/building to be located at an existing tower facility
that was already called home to dozens of other radio systems. The
Motorola R-56 standard was the 'bible' they quoted from and used. I have
personally used that same method many times since then. It works for me.
Your mileage may vary.

Gary, N7BRJ

On Sun, Mar 21, 2021 at 4:28 PM Bob McGraw <[hidden email]> wrote:

> If one is grounding on the inside for lightning, you best think
> otherwise! Any and all grounding for lightning should be done outside
> of the structure. You should have lightning protection devices on all
> coax, balanced, and rotor lines installed BEFORE they enter the structure.
>
> Internal grounding or bonding is to keep all equipment at the same
> potential.
>
> 73
>
> Bob, K4TAX
>
>
> Message: 10
> Date: Sat, 20 Mar 2021 18:11:57 +0200
> From: Victor Rosenthal 4X6GP<[hidden email]>
> To:[hidden email]
> Subject: Re: [Elecraft] best grounding technique
> Message-ID:<[hidden email]>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Having a bus that runs the length of an operating desk with all the
> equipment connected to it by short straps is not that different from
> bonding each piece of equipment to the ones next to it. But it allows
> you to remove one unit without breaking the "chain."
> This is contrasted to the "star" system, in which each piece of
> equipment is grounded to a central point with a relatively long ground
> lead.
>
> 73,
> Victor, 4X6GP
> Rehovot, Israel
> CWops #5
> Formerly K2VCO
> https://www.qsl.net/k2vco/
> On 20/03/2021 17:57, Wes wrote:
>
> > Interesting.? I don't have (and probably won't buy) the book, but here
> > we have a disconnect---no pun intended.
> >
> > If Rick's comment is accurate, and I have no reason to think otherwise,
> > then what it states is in direct conflict with what one co-author (K9YC)
> > has preached for years, that each box should connect to the next and
> > there is only one connected to the ground system.? He even calls it
> > madness to use individual connections to a common ground bus.
> >
> > This pretty much sums up why I'm not in the market for the book.
> >
> > Wes? N7WS
> >
> >
> > On 3/19/2021 2:44 PM, Rick NK7I wrote:
> >> The ARRL book on Grounding and Bonding is very clear.? Each piece of
> >> gear has its OWN wire/strap to a common grounding point (a copper pipe
> >> mounted on a wall is a common method, that being connected to the
> >> system ground; everything to the building safety ground, more ground
> >> rods every 2x the depth of the rod).
> >>
> >> Look at it this way, say a discharge comes in through your antenna,
> >> into the radio, connected to your computer and other devices.? Would
> >> you prefer that energy goes only through the radio to ground (losing
> >> the radio) or in a series through everything else in the shack too?
> >> The 'fan' mode you mention is preferred, give that energy EVERY chance
> >> to seek ground BEFORE it passes through your gear.
> >>
> >> Energy shunts (PolyPhase devises for example) at the antenna entry
> >> point are another must.? One per feed.
> >>
> >> I suggest reading that book, several times (it's complex) for a better
> >> understanding.
> >>
> >> 73,
> >> Rick NK7I
> >>
> >> On 3/19/2021 2:06 PM, Robert G Strickland via Elecraft wrote:
> >>> It seems that there are two ways of running grounding wires in the
> >>> shack: FAN - from a common ground point, individual grounding wires
> >>> are run to each piece of equipment; LINKING - a ground wire is run
> >>> from each piece of equipment to the next and eventually ending in a
> >>> common ground point. What's the group wisdom on the relative merits
> >>> of these two approaches to running grounds in the shack?
> >>> ...robert
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]