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From: David Jefferies
Date: 05 Jan 2003
Time: 16:32:49
Remote Name: 195.92.168.167
Dear List, <><><> KC3JV (Mark Rothstein) wrote an article in antenneX on dielectric loading of loop and rod antennas using rutile TiO2 powder in paraffin wax. Here is what he said in a recent email......QUOTE <> <> <> "About 2 years ago I published an article on dielectric loading using Rutile ( Titanium Dioxide ) mixed with paraffin (candle wax) wax. It had negligible effect on a dipole but the effect on a loop was outstanding. Titanium dioxide is rather inexpensive and is used in most paints to obtain its white base. I was able to load about 50% Rutile into the wax and still make it workable. I gave up experimenting because I really didn't have the facilities to mix large quantities. Rutile has a dielectric constant of 100." ENDQUOTE <><><> The antenneX URL for KC3JV's article is http://antennex.com/archive4/Apr00/Apr3/dieload.htm <><><> Mark Rothstein's results, that dielectric loading has more effect on the size of a loop antenna than a rod antenna, is confirmed by our subsequent measurements at Surrey.|<><><>| David Jefferies.