6m Antenna Dimensions

Six Meter Wire Antennas

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Six Meter CW/SSB

Center Frequency:  50.100 Mhz 147.86 Mhz 3rd Harmonic
Halfwave in space is:   9.82 feet  6.68 coax| 8.05 twinlead
Quarterwave in space is:  4.91 feet  3.34 coax| 4.03 twinlead

Quarterwave Vertical is:  4.67 feet  5.50 foot ground radials
Five Eights wave Vertical is: 12.04 feet  4.67 foot ground plane
Three Quarter wave Vertical: 14.49 feet  2.34 foot eighthwave

Halfwave Dipole/Vertical is:  9.34 feet  4.67 one side.
Halfwave Reflector is:   9.81 feet  8.92 for Director
Low Mount Halfwave is:   9.14 feet  4.57 one side.
Halfwave Folded Dipole is:  9.22 feet  4.61 one side.
Halfwave Inverted V is:   9.68 feet  4.84 one side.
Colinear Array is:  19.16 feet  9.58 one side.
Extended Double Zepp is: 24.07 feet 12.04 one side.

Fullwave Quad Loop is:  20.36 feet  5.09 one side.
Reflector|Director:  21.38|19.44  5.34| 4.86 one side.
Fullwave Delta Loop is:  20.36 feet  6.79 one side.
Reflector|Director:  21.38|19.44  7.13| 6.48 one side.

Waves 1:  19.16 |1.5:  28.98 |2:  38.80 |2.5:  48.62 |3:  58.44 |4 :  78.08
Waves 5:  97.72 |6.0: 117.37 |7: 137.01 |8.0: 156.65 |9: 176.29 |10: 195.93

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Six Meter FM

Center Frequency:  52.525 Mhz 155.01 Mhz 3rd Harmonic
Halfwave in space is:   9.37 feet  6.37 coax| 7.68 twinlead
Quarterwave in space is:  4.68 feet  3.18 coax| 3.84 twinlead

Quarterwave Vertical is:  4.46 feet  5.25 foot ground radials
Five Eights wave Vertical is: 11.48 feet  4.46 foot ground plane
Three Quarter wave Vertical: 13.82 feet  2.23 foot eighthwave

Halfwave Dipole/Vertical is:  8.91 feet  4.46 one side.
Halfwave Reflector is:   9.36 feet  8.51 for Director
Low Mount Halfwave is:   8.72 feet  4.36 one side.
Halfwave Folded Dipole is:  8.80 feet  4.40 one side.
Halfwave Inverted V is:   9.23 feet  4.62 one side.
Colinear Array is:  18.28 feet  9.14 one side.
Extended Double Zepp is: 22.96 feet 11.48 one side.

Fullwave Quad Loop is:  19.42 feet  4.85 one side.
Reflector|Director:  20.39|18.55  5.10| 4.64 one side.
Fullwave Delta Loop is:  19.42 feet  6.47 one side.
Reflector|Director:  20.39|18.55  6.80| 6.18 one side.

Waves 1:  18.28 |1.5:  27.64 |2:  37.01 |2.5:  46.38 |3:  55.74 |4 :  74.48
Waves 5:  93.21 |6.0: 111.95 |7: 130.68 |8.0: 149.41 |9: 168.15 |10: 186.88

Note: At Six meters the diameter of elements in terms of wavelength starts to become large, even with heavy wire like 10 gauge. With tubing elements, an additional shortening factor starts to become important. As elements get fat, the resonant frequency goes down for a given length. This is not a problem on the lower frequencies where even one inch tubing is still small diameter relative to wavelength, but at six meters and above it starts to become more and more significant.