|Subject:||Re: [TowerTalk] Station grounding on granite|
|From:||Gary Schafer <email@example.com>|
|Date:||Sun, 21 Nov 2004 10:47:27 -0500|
You would not want to use aluminum strap in contact with copper. It will
corrode away the aluminum in a short time.|
Burying copper wire for a ground is a good thing to do. However a very long run will do little good. The inductance of a long run gets too high and the long length of wire becomes useless. It is much better to use shorter runs out in different directions. Build a buried radial system just like you would for a vertical antenna.
73 Gary K4FMX
Martin as an electrician and a cert. lighting ground installer in New York might I suggest the following. First when seccureing your wire for lightning use only copper or aluminium nails and straps.all others will not work.Second do not bend sharp angles in the ground wire(sweeps only)the speed at wich lightning travels will cause it not to make a sharp turn. As for being on granite if you run a bare copper ground(#4 recommended)burried 2 ft or so run it as long as possible.the increase in the surface area in contact with the ground will help disipate the charge.Hope this helps NY6DX
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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