Center Frequency: 9.750 Mhz 28.77 Mhz 3rd Harmonic Halfwave in space is: 50.46 feet 34.31 coax|41.38 twinlead Quarterwave in space is: 25.23 feet 17.16 coax|20.69 twinlead Quarterwave Vertical is: 24.00 feet 28.26 foot ground radials Five Eights wave Vertical is: 61.85 feet 24.00 foot ground plane Three Quarter wave Vertical: 74.46 feet 12.00 foot eighthwave Halfwave Dipole/Vertical is: 48.00 feet 24.00 one side. Halfwave Reflector is: 50.40 feet 45.84 for Director Low Mount Halfwave is: 46.97 feet 23.49 one side. Halfwave Folded Dipole is: 47.38 feet 23.69 one side. Halfwave Inverted V is: 49.74 feet 24.87 one side. Colinear Array is: 98.46 feet 49.23 one side. Extended Double Zepp is: 123.69 feet 61.85 one side. Fullwave Quad Loop is: 104.62 feet 26.15 one side. Reflector|Director: 109.85|99.91 27.46|24.98 one side. Fullwave Delta Loop is: 104.62 feet 34.87 one side. Reflector|Director: 109.85|99.91 36.62|33.30 one side. Waves 1: 98.46 |1.5: 148.92 |2: 199.38 |2.5: 249.85 |3: 300.31 |4 : 401.23 Waves 5: 502.15 |6.0: 603.08 |7: 704.00 |8.0: 804.92 |9: 905.85 |10:1006.77
Note: 31 Meters is probably the best SWL band on the entire dial. Always popular with many nations, and usually well packed by signals any night of the year. It is just on the low side of WWV at 10 Mhz from the 30 meter WARC Amateur Band.
06/99