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Re: [TenTec] grounds

To: casey@tomochka.com, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] grounds
From: davkozy@comcast.net
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 22 Jan 2012 14:15:26 +0000 (UTC)
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>

Grounds have always been somewhat of a mystery to me. It seems that there are 
various types of grounds. 

If you tie all your ground rods together, does that remove the possibility of 
any potential between grounds? 

----- Original Message -----
From: "Casey" <casey@tomochka.com> 
To: tentec@contesting.com 
Sent: Friday, January 20, 2012 5:58:42 PM 
Subject: Re: [TenTec] grounds 

   "You should establish a GROUND BUSS! No, it is not made by GM, grin! It is a 
   metal bar or plate you can drill and tap or put screws, nuts, and lock 
   washers into! Then run INDIVIDUAL, yes, individual wires from equipment to 
   the ground buss. Run old coax braid or a large SINGLE wire, to the outside 
   ground rod field. This stops what is called GROUND LOOPS. 

   Walt K8CV." 

Unfortunately, that will not eliminate ground loops if the power source 
to which all the equipment is plugged into is not also grounded by a 
separate wire to that ground rod and to nothing else. This is called a 
technical ground. Otherwise, you will have a difference in potential 
between the house electrical ground and the ground rod for the 
equipment, i.e. ground loop. 

A really easy way to check for ground loops is to bring up any 
digi-modes program and inspect the waterfall. If you see lines at 
approximately 60Hz intervals or multiples thereof then you have ground 


Casey, TI2/NA7U 

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