> So let's table the discussion about folded antennas. In the case of a > simple vertical, where shorter height corresponds to lower radiation > resistance, why does the effective series ground loss resistance introduced > by a poor radial system appear to decrease with decrease in radiation > resistance, instead of being constant?
The radiation resistance over soil is different than the radiation resistance over perfect earth. The radiation resistance depends on the number, length, and type of radials too: http://www.antennasbyn6lf.com/files/radiation_resistance_variation_with_radial_system_design.pdf This is a complicated problem with a lot of subtlety. It gets even weirder if the radials are long, like 3/4 wavelength. I'll look at the specific cases you're talking about later and see if I can give any input. What were your soil conditions in the model? 73, Dan _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
