OCFD  ANTENNA  MODELING

John Young, K8BA has modeled 160m, 80m and 40m OCFD antennas,

showing results for a feedpoint impedance of:

•    50 Ohm
• 100 Ohm
• 150 Ohm
• 200 Ohm (most often used)
• 300 Ohm

          AND

• for about 100 different feedpoint  positions, from 0 to 50% along the half-wavelength wire.

    In addition, each modeled antenna shows 3 sheets of results:

1)  Detailed impedance across each band

2)  Average SWR across each band

3)  Highest SWR within each band

K8BA's  MONSTER EXCEL FILES:

The First File:  160m OCFD at 40 ft. AGL (height):

The Second File:  80m OCFD at 40 ft. AGL (height):

The Third File:  40m OCFD at 20 ft. AGL (height):

The Fourth File:  40m OCFD at 40 ft. AGL (height):