---- Log_Spiral_f_lo_13.500.ant ---- Oct 18, 2020 07:04:34
Spiral Antenna, Iteration f_lo = 13.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 447
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.31% 
Source  Zr/Zi: 648.8, +j411.7 ohms
 SWR:  1.86:1
Maxgain: 6.95 dBi at 204 Azim
         6.95 dBi at 15.4 Elev
F/R: 4.31 dB dB (F/B: 0.3 dB ;0.3 dB at 165 El)
Total Loss: 0.06 dB (Efficiency: 98.7%)

---- Log_Spiral_f_lo_13.700.ant ---- Oct 18, 2020 07:04:37
Spiral Antenna, Iteration f_lo = 13.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 425
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.13% 
Source  Zr/Zi: 487.4, -j72.3 ohms
 SWR:  1.86:1
Maxgain: 7.65 dBi at 4 Azim
         7.65 dBi at 15.6 Elev
F/R: 3.83 dB dB (F/B: 0.02 dB ;0.02 dB at 164 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_13.900.ant ---- Oct 18, 2020 07:04:40
Spiral Antenna, Iteration f_lo = 13.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 425
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.13% 
Source  Zr/Zi: 487.4, -j72.3 ohms
 SWR:  1.86:1
Maxgain: 7.65 dBi at 4 Azim
         7.65 dBi at 15.6 Elev
F/R: 3.83 dB dB (F/B: 0.02 dB ;0.02 dB at 164 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_14.100.ant ---- Oct 18, 2020 07:04:44
Spiral Antenna, Iteration f_lo = 14.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 403
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.09% 
Source  Zr/Zi: 610.2, -j516.7 ohms
 SWR:  2.18:1
Maxgain: 6.71 dBi at 2 Azim
         6.71 dBi at 15.1 Elev
F/R: 3.25 dB dB (F/B: 0.02 dB ;0.02 dB at 165 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_14.300.ant ---- Oct 18, 2020 07:04:47
Spiral Antenna, Iteration f_lo = 14.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 403
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.09% 
Source  Zr/Zi: 610.2, -j516.7 ohms
 SWR:  2.18:1
Maxgain: 6.71 dBi at 2 Azim
         6.71 dBi at 15.1 Elev
F/R: 3.25 dB dB (F/B: 0.02 dB ;0.02 dB at 165 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_14.500.ant ---- Oct 18, 2020 07:04:51
Spiral Antenna, Iteration f_lo = 14.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 403
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.09% 
Source  Zr/Zi: 610.2, -j516.7 ohms
 SWR:  2.18:1
Maxgain: 6.71 dBi at 2 Azim
         6.71 dBi at 15.1 Elev
F/R: 3.25 dB dB (F/B: 0.02 dB ;0.02 dB at 165 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_14.700.ant ---- Oct 18, 2020 07:04:53
Spiral Antenna, Iteration f_lo = 14.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 383
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.17% 
Source  Zr/Zi: 1272.2, -j903.8 ohms
 SWR:  2.42:1
Maxgain: 5.26 dBi at 183 Azim
         5.26 dBi at 12.1 Elev
F/R: 2.88 dB dB (F/B: 0.05 dB ;0.05 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_14.900.ant ---- Oct 18, 2020 07:04:56
Spiral Antenna, Iteration f_lo = 14.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 383
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.17% 
Source  Zr/Zi: 1272.2, -j903.8 ohms
 SWR:  2.42:1
Maxgain: 5.26 dBi at 183 Azim
         5.26 dBi at 12.1 Elev
F/R: 2.88 dB dB (F/B: 0.05 dB ;0.05 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.100.ant ---- Oct 18, 2020 07:04:59
Spiral Antenna, Iteration f_lo = 15.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 383
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.17% 
Source  Zr/Zi: 1272.2, -j903.8 ohms
 SWR:  2.42:1
Maxgain: 5.26 dBi at 183 Azim
         5.26 dBi at 12.1 Elev
F/R: 2.88 dB dB (F/B: 0.05 dB ;0.05 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.300.ant ---- Oct 18, 2020 07:05:03
Spiral Antenna, Iteration f_lo = 15.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 363
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.2% 
Source  Zr/Zi: 1967.5, +j333.5 ohms
 SWR:  2.26:1
Maxgain: 6.12 dBi at 184 Azim
         6.12 dBi at 12.4 Elev
F/R: 3.61 dB dB (F/B: 0.13 dB ;0.13 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.500.ant ---- Oct 18, 2020 07:05:06
Spiral Antenna, Iteration f_lo = 15.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 363
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.2% 
Source  Zr/Zi: 1967.5, +j333.5 ohms
 SWR:  2.26:1
Maxgain: 6.12 dBi at 184 Azim
         6.12 dBi at 12.4 Elev
F/R: 3.61 dB dB (F/B: 0.13 dB ;0.13 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.700.ant ---- Oct 18, 2020 07:05:09
Spiral Antenna, Iteration f_lo = 15.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 363
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.2% 
Source  Zr/Zi: 1967.5, +j333.5 ohms
 SWR:  2.26:1
Maxgain: 6.12 dBi at 184 Azim
         6.12 dBi at 12.4 Elev
F/R: 3.61 dB dB (F/B: 0.13 dB ;0.13 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.900.ant ---- Oct 18, 2020 07:05:12
Spiral Antenna, Iteration f_lo = 15.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 363
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.2% 
Source  Zr/Zi: 1967.5, +j333.5 ohms
 SWR:  2.26:1
Maxgain: 6.12 dBi at 184 Azim
         6.12 dBi at 12.4 Elev
F/R: 3.61 dB dB (F/B: 0.13 dB ;0.13 dB at 168 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_16.100.ant ---- Oct 18, 2020 07:05:15
Spiral Antenna, Iteration f_lo = 16.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 343
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.05% 
Source  Zr/Zi: 890.2, +j571.8 ohms
 SWR:  1.87:1
Maxgain: 8.23 dBi at 182 Azim
         8.23 dBi at 14.5 Elev
F/R: 4.42 dB dB (F/B: 0.03 dB ;0.03 dB at 165 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_16.300.ant ---- Oct 18, 2020 07:05:18
Spiral Antenna, Iteration f_lo = 16.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 343
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.05% 
Source  Zr/Zi: 890.2, +j571.8 ohms
 SWR:  1.87:1
Maxgain: 8.23 dBi at 182 Azim
         8.23 dBi at 14.5 Elev
F/R: 4.42 dB dB (F/B: 0.03 dB ;0.03 dB at 165 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_16.500.ant ---- Oct 18, 2020 07:05:20
Spiral Antenna, Iteration f_lo = 16.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 343
 
Freq: 24.89 MHz
Wire/Structure Loss: 1.05% 
Source  Zr/Zi: 890.2, +j571.8 ohms
 SWR:  1.87:1
Maxgain: 8.23 dBi at 182 Azim
         8.23 dBi at 14.5 Elev
F/R: 4.42 dB dB (F/B: 0.03 dB ;0.03 dB at 165 El)
Total Loss: 0.05 dB (Efficiency: 98.9%)

---- Log_Spiral_f_lo_16.700.ant ---- Oct 18, 2020 07:05:23
Spiral Antenna, Iteration f_lo = 16.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 325
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.88% 
Source  Zr/Zi: 568.3, +j180.6 ohms
 SWR:  1.69:1
Maxgain: 9.42 dBi at 180 Azim
         9.42 dBi at 15.4 Elev
F/R: 4.64 dB dB (F/B: 0.01 dB ;0.01 dB at 165 El)
Total Loss: 0.04 dB (Efficiency: 99.1%)

---- Log_Spiral_f_lo_16.900.ant ---- Oct 18, 2020 07:05:27
Spiral Antenna, Iteration f_lo = 16.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 325
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.88% 
Source  Zr/Zi: 568.3, +j180.6 ohms
 SWR:  1.69:1
Maxgain: 9.42 dBi at 180 Azim
         9.42 dBi at 15.4 Elev
F/R: 4.64 dB dB (F/B: 0.01 dB ;0.01 dB at 165 El)
Total Loss: 0.04 dB (Efficiency: 99.1%)

---- Log_Spiral_f_lo_17.100.ant ---- Oct 18, 2020 07:05:30
Spiral Antenna, Iteration f_lo = 17.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 325
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.88% 
Source  Zr/Zi: 568.3, +j180.6 ohms
 SWR:  1.69:1
Maxgain: 9.42 dBi at 180 Azim
         9.42 dBi at 15.4 Elev
F/R: 4.64 dB dB (F/B: 0.01 dB ;0.01 dB at 165 El)
Total Loss: 0.04 dB (Efficiency: 99.1%)

---- Log_Spiral_f_lo_17.300.ant ---- Oct 18, 2020 07:05:33
Spiral Antenna, Iteration f_lo = 17.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 307
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.76% 
Source  Zr/Zi: 516.6, -j151.8 ohms
 SWR:  1.81:1
Maxgain: 9.7 dBi at 0 Azim
         9.7 dBi at 15.8 Elev
F/R: 4.57 dB dB (F/B: 0 dB ;0 dB at 164 El)
Total Loss: 0.03 dB (Efficiency: 99.2%)

---- Log_Spiral_f_lo_17.500.ant ---- Oct 18, 2020 07:05:36
Spiral Antenna, Iteration f_lo = 17.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 307
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.76% 
Source  Zr/Zi: 516.6, -j151.8 ohms
 SWR:  1.81:1
Maxgain: 9.7 dBi at 0 Azim
         9.7 dBi at 15.8 Elev
F/R: 4.57 dB dB (F/B: 0 dB ;0 dB at 164 El)
Total Loss: 0.03 dB (Efficiency: 99.2%)

---- Log_Spiral_f_lo_17.700.ant ---- Oct 18, 2020 07:05:39
Spiral Antenna, Iteration f_lo = 17.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 307
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.76% 
Source  Zr/Zi: 516.6, -j151.8 ohms
 SWR:  1.81:1
Maxgain: 9.7 dBi at 0 Azim
         9.7 dBi at 15.8 Elev
F/R: 4.57 dB dB (F/B: 0 dB ;0 dB at 164 El)
Total Loss: 0.03 dB (Efficiency: 99.2%)

---- Log_Spiral_f_lo_17.900.ant ---- Oct 18, 2020 07:05:42
Spiral Antenna, Iteration f_lo = 17.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 307
 
Freq: 24.89 MHz
Wire/Structure Loss: 0.76% 
Source  Zr/Zi: 516.6, -j151.8 ohms
 SWR:  1.81:1
Maxgain: 9.7 dBi at 0 Azim
         9.7 dBi at 15.8 Elev
F/R: 4.57 dB dB (F/B: 0 dB ;0 dB at 164 El)
Total Loss: 0.03 dB (Efficiency: 99.2%)

