VGS-36100 Ground Screen

Valcom's VGS-36100 Ground Screen consists of 36 radials, each 97 feet long, joined to a center ring at the base of the antenna. The other radial ends are terminated by five-foot long ground rods, positioned 18 feet apart around the circumference.

The ground screen features all copper construction. The mounting pad, antenna, and antenna coupler are for reference only.

Quick Reference Data

Dimensions

Assembly and Installation Instructions

1. Dig an 18 inch trench centrally around the antenna pad with a diameter of approximately 7 feet.

2. Dig 4 trenches 18 inches deep from the center ring to the antenna pad 90 degrees apart.

3. Dig 36 straight trenches 18 inches deep, 97 feet long radially from the center ring.  The radials should be equally spaced 18 feet apart at the outer ends.

4. Fill all the trenches with 6 inches of rock free soil.

5. Encircle antenna with four sectors of the center ring.  Flexible tubing should be formed so that the antenna is approximately at the center of the ring.

6. Join the four segments of the center ring with the compression unions.  Connect the 12 inch jumper wires across the unions and braze the free end onto the copper center ring tubing.

7. Deploy the 36 ground radials in the trenches and secure to the ground rods with the ground rod connectors.  Using a sledge hammer, drive the rods into the ground.

8. Cut the four connecting wires to length and terminate at ground studs on tuner.  If a support tower is used, terminate wires to mounting studs on concrete pad.

9. Cover the connecting wire, center ring and ground radials with 6 inches of rock free soil.  Back fill remainder of trench with the removed soil.

1. Ground radial
2. Center ring
3. Compression union
4. Jumper wire

5. Ground rod
6. Ground rod connector
7. Connecting wire