Ground Plane with 2 Radials
Free Space
7.150 MHz
3 wires, feet
5   -36 0 0      0 0 0   #12
5     0 0 0     36 0 0   #12
5    0 0 36      0 0 0   #12
1 source
14,100,0
0 loads

This antenna demonstrates how low the residual horizontally polarized radiation
can be from a groundplane using only 2 radials.  In the worst direction it is
still about 10 dB down from the vertical radiation.  This antenna has only 0.5
dB less gain than a vertical dipole.