Grounding HOW-TO

The complete Grounding HOW-TO in Text format.

A sample 'Real-life' Grounding System.
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Principle RF-Grounding and Lightning Arrest
If your antenna location is high and open,- you might also consider complementing your grounding system with a Lightning arrests system.

First some warnings!! An un proper installation of lightning arrest system might increase the risk and damage in case of actual stroke of lightning,- also get some advice from your local electrician he might have some information about local considerations about ground conditions o.e. that might concern you.

The lightning arrest system.
Mainly,- the lightning arrest system can be described as a strongly ower dimensioned grounding of your antenna-mast or other antenna supporting structure. It consists of tre important parts:

  • A ground conductor - made by cupper leads or roods at Sufficient length or deeply into the ground.
  • Sufficient ground-wire,- connecting the ground conductor to mast structure.
  • Firm attacment to mast structure,- and the mast structure itself.

    The above parts has two impotant electrical 'connections' that is critical to performance and function. These connections must be done proper.

  • The ground conductor in the ground on up to the ground-wire.
  • From ground-wire and to antenna-mast or other antenna supporting structure.

    If your about to install a lightning arrests system. At this time you MUST also install some static-arrests to your Antenna cable.


    Complete Grounding Lineout


    Making the Ground Conductor
    Ground Conductor
    The image shows a ditch about 100cm deep with four(4) 100cm cupper rods,- connected together in parallel using the extended Ground-Wire.

    A sufficient ground conductor is made of a solid cupper rood,- at least 10-12 millimeter in diameter and 8ft of lenght (240cm)

    If your on rock hard or solid rock ground you could use a number if shorter roods with some distance inbetween connected to the ground lead in paralell or simply extend lenght of the ground-wire down into the ground in sufficient length to make it work as the ground-conductor,

    The lenght under ground needs to be at least tree times the lenght of equal conductor rood. (In this case equal to 3x240cm = 720cm of ground-wire for ground-conductor)
    To connect ground-wire to ground conductor roods use metal tube-clamps,- if possible drill wholes and use metal (self drilling) screws to get good electrical contact.

    BACKFILL MATERIALS
    The Ground-conductor can also be improved with propper chemicals, one that is often used in professional- telecommunication installations is Electro-Fill, you can find more information at: http://www.sgscorp.com/product.htm


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