40 Meter Wire Antennas


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

40 Meter NOVICE / 41 Meter SWL AM Band


Center Frequency:		 7.130 Mhz	 21.04 Mhz 3rd Harmonic
Halfwave in space is:		69.00 feet	46.92 coax|56.58 twinlead
Quarterwave in space is:	34.50 feet	23.46 coax|28.29 twinlead

Quarterwave Vertical is:	32.82 feet	38.64 foot ground radials
Five Eights wave Vertical is:	84.57 feet	32.82 foot ground plane
Three Quarter wave Vertical:	101.82 feet	16.41 foot eighthwave

Halfwave Dipole/Vertical is:	65.64 feet	32.82 one side.
Halfwave Reflector is:		68.92 feet	62.68 for Director
Low Mount Halfwave is:		64.24 feet	32.12 one side.
Halfwave Folded Dipole is:	64.80 feet	32.40 one side.
Halfwave Inverted V is:		68.02 feet	34.01 one side.
Colinear Array is:		134.64 feet	67.32 one side.
Extended Double Zepp is:	169.14 feet	84.57 one side.

Fullwave Quad Loop is:		143.06 feet	35.76 one side.
Reflector|Director:		150.21|136.62	37.55|34.15 one side.
Fullwave Delta Loop is:		143.06 feet	47.69 one side.
Reflector|Director:		150.21|136.62	50.07|45.54 one side.

Waves 1: 134.64 |1.5: 203.65 |2: 272.65 |2.5: 341.65 |3: 410.66 |4 : 548.67
Waves 5: 686.68 |6.0: 824.68 |7: 962.69 |8.0:1100.70 |9:1238.71 |10:1376.72

Note: As any novice knows, the 40 meter novice band has always been shared with international SW broadcast. Dodging AM heterodynes is what 40 meter Novice Operation is all about. The Russians have always had a special love for 41 meter AM broadcasting.

40 Meter SSB


Center Frequency:		 7.225 Mhz	 21.32 Mhz 3rd Harmonic
Halfwave in space is:		68.10 feet	46.31 coax|55.84 twinlead
Quarterwave in space is:	34.05 feet	23.15 coax|27.92 twinlead

Quarterwave Vertical is:	32.39 feet	38.13 foot ground radials
Five Eights wave Vertical is:	83.46 feet	32.39 foot ground plane
Three Quarter wave Vertical:	100.48 feet	16.19 foot eighthwave

Halfwave Dipole/Vertical is:	64.78 feet	32.39 one side.
Halfwave Reflector is:		68.01 feet	61.86 for Director
Low Mount Halfwave is:		63.39 feet	31.70 one side.
Halfwave Folded Dipole is:	63.94 feet	31.97 one side.
Halfwave Inverted V is:		67.13 feet	33.56 one side.
Colinear Array is:		132.87 feet	66.44 one side.
Extended Double Zepp is:	166.92 feet	83.46 one side.

Fullwave Quad Loop is:		141.18 feet	35.29 one side.
Reflector|Director:		148.24|134.82	37.06|33.71 one side.
Fullwave Delta Loop is:		141.18 feet	47.06 one side.
Reflector|Director:		148.24|134.82	49.41|44.94 one side.

Waves 1: 132.87 |1.5: 200.97 |2: 269.07 |2.5: 337.16 |3: 405.26 |4 : 541.45
Waves 5: 677.65 |6.0: 813.84 |7: 950.03 |8.0:1086.23 |9:1222.42 |10:1358.62

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06/99