Gain Comparisons at 1 Degree Take off Angle
Soil Conductivity mS/m
1/4 wL Vertical
Dipole @ 1/4 wL
5-el Yagi @ 1/4 wL
5-el Yagi @ 1 wL
Vertical Moxon with center @ 1/4 wL
5000
2 dbi
-23 dbi
-15 dbi
-3 dbi
8 dbi
30
-13 dbi
-23 dbi
-15 dbi
-3 dbi
-7 dbi
10
-17 dbi
-23 dbi
-15 dbi
-3 dbi
-11 dbi
5
-18 dbi
-23 dbi
-15 dbi
-3 dbi
-13 dbi
2
-19 dbi
-23 dbi
-15 dbi
-3 dbi
-13 dbi

Gain Comparisons at 5 Degree Take off Angle

Soil Conductivity mS/m
1/4 wL Vertical
Dipole @ 1/4 wL
5-el Yagi @ 1/4 wL
5-el Yagi @ 1 wL
Vertical Moxon with center @ 1/4 wL
5000
4 dbi
-10 dbi
-1 dbi
10 dbi
10 dbi
30
-2 dbi
-10 dbi
-1 dbi
10 dbi
3 dbi
10
-5 dbi
-10 dbi
-1 dbi
10 dbi
0 dbi
5
-6 dbi
-10 dbi
-1 dbi
10 dbi
-1 dbi
2
-7 dbi
-10 dbi
-1 dbi
10 dbi
-1 dbi

5000 mS/m = salt water

    30 mS/m = very good soil: pastoral rich found in central US

    10 mS/m = pastoral rich soil found in US midwest

      5 mS/m = average soil: pastoral, heavy clay

      2 mS/m = poor soil: rocky mountainous, sandy, dry