30 Meter Ant #s

30 Meter Wire Antennas

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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.