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Re: [TowerTalk] Grounding of Amateur Radio installations

To: Pete Smith <>
Subject: Re: [TowerTalk] Grounding of Amateur Radio installations
From: Don Havlicek <>
Date: Fri, 08 Dec 2006 10:24:51 -0500
List-post: <>
My problem, which I have been mulling over for months now, is somewhat 

My electric service is underground, running about 450' from the service 
transformer to the polebarn garage in the rear of the property.  At that 
point there is a SPG for the electric service, but then the power lines, 
again buried, run 70 feet to the house, which is a modular home on 
I-beams mounted upon a cement block foundation.  There is NO electrical 
ground at the house, but the telephone line, also buried from the 
roadside service box [over 200 feet away] has a ground rod driven into 
the soil next to the house.
The entrance for the electric line and the telephone service are at the 
NE of the house.
My radio room is located near the SW corner of the house, and I will 
have all lines [coax, rotor control, etc] running out through a vent 
panel in the foundation immediately below the radio room.
What I am considering is adding a SPG for the RF cables, etc., at or 
near to the vent panel in the foundation at the feed-through point.
Not sure if having the SPG for RF very distant from the electric service 
SPG is inviting problems.  [yes, I know, that's contradictory, as you 
cannot have TWO SPGs.]
Any thoughts on this would be invited, as I will be installing all my 
towers, radial systems, antennas, etc., in the Spring.
Edmore, MI

Pete Smith wrote:

>At 09:18 AM 12/8/2006, Phil Camera wrote:
>>"Something to bear in mind is that, in general, most jurisdictions don't 
>>bother enforcing the NEC for amateur radio antennas"
>>Which actually is too bad because these guidelines are exactly the measures 
>>one should do for a properly installed safety & lightning prevention 
>>grounding system.  And every single measure must be in place or else you're 
>>leaving an entry route for Mother Nature to bite you.
>>Phil  KB9CRY
>Which is fine if your shack is in an optimal location so that you can do 
>everything by the book, but what if it's on the second floor of an old house?  
>I attempt a single-point ground in the shack, but it is a long way from earth 
>ground.  I am not so naive as to believe I'm going to be able to survive a hit 
>if the cables from my tower are connected.  Is simple disconnection at the 
>shack entrance up to code?  I don't know, but it's all I have.
>73, Pete N4ZR 
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