[TenTec] Lightning protection

[Clayton Brantley via TenTec]

Cecil, I have to agree with you on this.  I did a 7 channel trunking system for our plant in Oak Ridge, TN
and we had copper sheet on the floor of the shack, a halo loop made from 1" copper pipe around the
ceiling with copper strap bonding to the floor and 4/0 copper wire thru each corner of the building to the
ground mat out side.  A 1/4 inch copper "window" for all cables to enter/leave the shack. 


Needless to say, we ran 24/7 without any problems.

Clayton N4EV


On Wednesday, May 14, 2014 8:34 PM, Bob McGraw - K4TAX <RMcGraw at Blomand.net> wrote:
 
Cecil:

I don't have a problem with your concept as long as the outside work is done 
first and correct.  That says the outside system must be bonded to the AC 
mains.

Failure to do this will then tie the outside system to the equipment inside 
which is connected to the AC mains.  Thus the path of destruction is through 
the radio equipment, regardless if it is ON or OFF, antenna connected or 
disconnected.

73
Bob, K4TAX






----- Original Message ----- 
From: "Cecil" <chacuff at cableone.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Wednesday, May 14, 2014 7:20 PM
Subject: Re: [TenTec] Lightning protection


>
>
> Sent from my iPad
>
>> On May 14, 2014, at 6:38 PM, "Bob McGraw - K4TAX" <RMcGraw at Blomand.net> 
>> wrote:
>>
>> Ground?   Someone said use one for lightning protection.  Why?  All 
>> lightning protection should be OUTSIDE of the house and never inside.  I 
>> operate from the 2nd floor of the house.  No ground from the station to 
>> the outside is ever.
>
>> 73
>> Bob, K4TAX
>>
> I like you Bob......
>
> But we will never agree on that one....
>
> Too many documents and industry standards say and do otherwise....
>
> First line of defense is definitely outside but not continuing that 
> protection to a shack central point ground system with all equipment 
> bonded too it and the building electrical safety ground system is only 
> doing half the job...
>
> It's the system design used in every Cellular/PCS/SCADA/Public Safety 
> radio system out there....systems that have to run 24/7 lightning or not, 
> all usually with 200'+ tower heights.
>
> I'm sure Jim will hammer me next.....
>
> Sorry guys...it's my training and vocation...building and maintaining 
> these systems....why wouldn't one carry that philosophy as much as is 
> practical into our stations...I have with excellent results.  My tower 
> gets popped a couple times a year and no damage to anything.
>
> Of course this has nothing to do with the Eagle RFI problem...but I felt 
> compelled to comment.  (Changed the title so as to not hijack the thread)
>
> Dead horse ....I know...
>
> Cecil
> K5DL
>
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