40 Meter Wire Antennas

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40 Meter CW

Center Frequency:   7.025 Mhz  20.73 Mhz 3rd Harmonic
Halfwave in space is:  70.04 feet 47.62 coax|57.43 twinlead
Quarterwave in space is: 35.02 feet 23.81 coax|28.71 twinlead

Quarterwave Vertical is: 33.31 feet 39.22 foot ground radials
Five Eights wave Vertical is: 85.84 feet 33.31 foot ground plane
Three Quarter wave Vertical: 103.35 feet 16.65 foot eighthwave

Halfwave Dipole/Vertical is: 66.62 feet 33.31 one side.
Halfwave Reflector is:  69.95 feet 63.62 for Director
Low Mount Halfwave is:  65.20 feet 32.60 one side.
Halfwave Folded Dipole is: 65.77 feet 32.88 one side.
Halfwave Inverted V is:  69.04 feet 34.52 one side.
Colinear Array is:  136.65 feet 68.33 one side.
Extended Double Zepp is: 171.67 feet 85.84 one side.

Fullwave Quad Loop is:  145.20 feet 36.30 one side.
Reflector|Director:  152.46|138.66 38.11|34.67 one side.
Fullwave Delta Loop is:  145.20 feet 48.40 one side.
Reflector|Director:  152.46|138.66 50.82|46.22 one side.

Waves 1: 136.65 |1.5: 206.69 |2: 276.73 |2.5: 346.76 |3: 416.80 |4 : 556.87
Waves 5: 696.94 |6.0: 837.01 |7: 977.08 |8.0:1117.15 |9:1257.22 |10:1397.30