1. Below are two overlays of my 1/4 wave vertical StarDuster like antenna with horizontal radials, no mast, and no feed line included in the model.
I set each model to resonance similar to the way DB suggested he did as he changed the radial angles.
The antenna is also set 18' feet above ground, but my model is set with the Ground Description set to Average Soil.
Each model is also set similar to what DB did with radials slanted down at 15,30,45,60 degrees and is noted in the color descriptions listed.
I uses the same models and simply changed the soil condition settings to Extremely Poor in order to try and get my patterns to look more similar to DB's presentations.
2. The second PDF file is the starting model with 3 horizontal radials which includes added performance details and antenna images. Note that these two models with horizontal radials both show similar matching results compared to DB's starting model.
The models are set over Average Soil and Extremely Poor Soil as a comparison to the effects that soil settings have on the patterns and gain produced.
This said, I cannot explain why my models show producing a steadily increasing trend in gain as the radials are set at lower angles. This is the opposite trend we see in DB's models.
