30 Meter Wire Antennas


This Band CW Only


Center Frequency:		10.120 Mhz	 29.87 Mhz 3rd Harmonic
Halfwave in space is:		48.62 feet	33.06 coax|39.87 twinlead
Quarterwave in space is:	24.31 feet	16.53 coax|19.93 twinlead

Quarterwave Vertical is:	23.12 feet	27.23 foot ground radials
Five Eights wave Vertical is:	59.58 feet	23.12 foot ground plane
Three Quarter wave Vertical:	71.74 feet	11.56 foot eighthwave

Halfwave Dipole/Vertical is:	46.25 feet	23.12 one side.
Halfwave Reflector is:		48.56 feet	44.16 for Director
Low Mount Halfwave is:		45.26 feet	22.63 one side.
Halfwave Folded Dipole is:	45.65 feet	22.83 one side.
Halfwave Inverted V is:		47.92 feet	23.96 one side.
Colinear Array is:		94.86 feet	47.43 one side.
Extended Double Zepp is:	119.17 feet	59.58 one side.

Fullwave Quad Loop is:		100.79 feet	25.20 one side.
Reflector|Director:		105.83|96.25	26.46|24.06 one side.
Fullwave Delta Loop is:		100.79 feet	33.60 one side.
Reflector|Director:		105.83|96.25	35.28|32.08 one side.

Waves 1:  94.86 |1.5: 143.48 |2: 192.09 |2.5: 240.71 |3: 289.33 |4 : 386.56
Waves 5: 483.79 |6.0: 581.03 |7: 678.26 |8.0: 775.49 |9: 872.73 |10: 969.96

This is a shared band. Expect to find Commercial RTTY and FAX, especially Weather FAX transmissions on this band. Most international HAM signals will be found near 10.105, but Japanese stations frequently cluster around 10.130 Mhz.


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06/99