[Boatanchors] Testing a Ground connection

[Jack Taylor]

When I was doing test and evaluation on Army communications systems, the
ground requirement for a fixed station was 5 Ohms.

73 de Jack - N7OO

----- Original Message ----- 
From: "James Cundiff" <dadofpetie at comcast.net>
To: <boatanchors at mailman.qth.net>
Sent: Monday, November 14, 2005 4:12 AM
Subject: Re: [Boatanchors] Testing a Ground connection


> Hello All,
>     I work for the local utility here (Baltimore Gas and Electric). Two 
> years ago when I installed my station grounds I ask the overhead guys 
> (linemen and supervisors) for advice. Here is what I was told and/or 
> learned.
> 1.) ALL grounds in the house must be the same potential (tied directly 
> together)
> 2.) The overhead high voltage system grounds here are at approx 11 ohms 
> (read with a clamp on meter). This was borrowed from them, not a cheap 
> meter.
> 3.) My system (with 8 ground rods 8ft deep and tied together with #4 
> solid wire) checked in @ 9 ohms. Better than the lines behind my house!
> As a result of this extra work, I have not had any ground problems. I 
> realize this might be a little overkill for a receiving only station, I 
> just thought I would pass along the knowledge for someone doing station 
> work. It was stressed to me that if the radio station grounds and the 
> house grounds were different potential, The station was NOT grounded!73
> 
> In His service
> Jim Cundiff KB3GFC
> ARES EC Baltimore City/County MD
> BGE Radio Shop
>