[TowerTalk] Fw: ground

[Wes Attaway (N5WA)]

You need to tie all the grounds together.

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com]On Behalf Of Van Fair
Sent: Friday, April 18, 2003 10:00 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Fw: ground



----- Original Message -----
From: Van Fair
To: towertalk-request at contesting.com
Sent: Friday, April 18, 2003 11:16 AM
Subject: ground


The power company in my area offers a whole house surge
protection system which mounts behind the meter for $5 per month.
I recently had it installed in my home. They installed a new
meter ground rod which changed my ground from 150 ohms to 65
ohms. In talking to the installer I told him about my ground at
the tower which measured 120 ohms and the ground at my rig which
measured 195 ohms.  Since I have 3 ground systems There is
potential for a problem.

The tower grounds and the rig grounds are connected via the 5
coax shields which are all grounded to the rod at the base of the
tower. . All the rig and tuner grounds go to one point on the
operating table and from there 10 feet to another  10 ft  ground
rod.  The rigs are also grounded through the AC cords to the
house ground.  Question? Should I tie my central ground point on
the operating table to the house ground via the ground on the 240
volt  plug.  Do I have a potential problem. Suggestions.

By the way the power company used a chemical welding device
called a oneshot GR1161G to weld the ground wire to the ground
rod. Its a small ceramic tube which fits over the rod and burns
gunpowder and a starter to develop heat to make the weld. A neat
little device. He also used a 120 volt device like a big drill
which drove the rod in the ground in 30 seconds. NEAT.
_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers",
"Wireless Weather Stations", and lot's more.  Call Toll Free,
1-800-333-9041 with any questions and ask for Sherman, W2FLA.

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