---- Log_Spiral_f_lo_13.500.ant ---- Oct 18, 2020 07:08:32
Spiral Antenna, Iteration f_lo = 13.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 533
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.18% 
Source  Zr/Zi: 458.5, -j306.8 ohms
 SWR:  2.26:1
Maxgain: 7.43 dBi at 0 Azim
         7.77 dBi at 49 Elev
F/R: 3.61 dB dB (F/B: 0 dB ;0 dB at 135 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_13.700.ant ---- Oct 18, 2020 07:08:36
Spiral Antenna, Iteration f_lo = 13.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 507
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.42% 
Source  Zr/Zi: 696.1, -j869.3 ohms
 SWR:  2.93:1
Maxgain: 5.01 dBi at 4 Azim
         5.33 dBi at 131 Elev
F/R: 3.1 dB dB (F/B: 0.02 dB ;0.02 dB at 135 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_13.900.ant ---- Oct 18, 2020 07:08:41
Spiral Antenna, Iteration f_lo = 13.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 507
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.42% 
Source  Zr/Zi: 696.1, -j869.3 ohms
 SWR:  2.93:1
Maxgain: 5.01 dBi at 4 Azim
         5.33 dBi at 131 Elev
F/R: 3.1 dB dB (F/B: 0.02 dB ;0.02 dB at 135 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_14.100.ant ---- Oct 18, 2020 07:08:45
Spiral Antenna, Iteration f_lo = 14.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 481
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.6% 
Source  Zr/Zi: 2318.5, -j603.5 ohms
 SWR:  2.78:1
Maxgain: 4.89 dBi at 221 Azim
         4.89 dBi at 29.2 Elev
F/R: 4.39 dB dB (F/B: 2 dB ;3.4 dB at 151 El)
Total Loss: 0.07 dB (Efficiency: 98.4%)

---- Log_Spiral_f_lo_14.300.ant ---- Oct 18, 2020 07:08:49
Spiral Antenna, Iteration f_lo = 14.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 481
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.6% 
Source  Zr/Zi: 2318.5, -j603.5 ohms
 SWR:  2.78:1
Maxgain: 4.89 dBi at 221 Azim
         4.89 dBi at 29.2 Elev
F/R: 4.39 dB dB (F/B: 2 dB ;3.4 dB at 151 El)
Total Loss: 0.07 dB (Efficiency: 98.4%)

---- Log_Spiral_f_lo_14.500.ant ---- Oct 18, 2020 07:08:53
Spiral Antenna, Iteration f_lo = 14.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 481
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.6% 
Source  Zr/Zi: 2318.5, -j603.5 ohms
 SWR:  2.78:1
Maxgain: 4.89 dBi at 221 Azim
         4.89 dBi at 29.2 Elev
F/R: 4.39 dB dB (F/B: 2 dB ;3.4 dB at 151 El)
Total Loss: 0.07 dB (Efficiency: 98.4%)

---- Log_Spiral_f_lo_14.700.ant ---- Oct 18, 2020 07:08:57
Spiral Antenna, Iteration f_lo = 14.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 457
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.38% 
Source  Zr/Zi: 914.3, +j638.7 ohms
 SWR:  1.99:1
Maxgain: 6.01 dBi at 190 Azim
         6.01 dBi at 14.5 Elev
F/R: 3.57 dB dB (F/B: 0.24 dB ;0.24 dB at 166 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_14.900.ant ---- Oct 18, 2020 07:09:01
Spiral Antenna, Iteration f_lo = 14.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 457
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.38% 
Source  Zr/Zi: 914.3, +j638.7 ohms
 SWR:  1.99:1
Maxgain: 6.01 dBi at 190 Azim
         6.01 dBi at 14.5 Elev
F/R: 3.57 dB dB (F/B: 0.24 dB ;0.24 dB at 166 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_15.100.ant ---- Oct 18, 2020 07:09:04
Spiral Antenna, Iteration f_lo = 15.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 457
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.38% 
Source  Zr/Zi: 914.3, +j638.7 ohms
 SWR:  1.99:1
Maxgain: 6.01 dBi at 190 Azim
         6.01 dBi at 14.5 Elev
F/R: 3.57 dB dB (F/B: 0.24 dB ;0.24 dB at 166 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_15.300.ant ---- Oct 18, 2020 07:09:08
Spiral Antenna, Iteration f_lo = 15.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 433
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.16% 
Source  Zr/Zi: 467, +j81.4 ohms
 SWR:  1.95:1
Maxgain: 6.88 dBi at 182 Azim
         7.01 dBi at 48 Elev
F/R: 3.33 dB dB (F/B: 0.01 dB ;0.01 dB at 166 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.500.ant ---- Oct 18, 2020 07:09:11
Spiral Antenna, Iteration f_lo = 15.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 433
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.16% 
Source  Zr/Zi: 467, +j81.4 ohms
 SWR:  1.95:1
Maxgain: 6.88 dBi at 182 Azim
         7.01 dBi at 48 Elev
F/R: 3.33 dB dB (F/B: 0.01 dB ;0.01 dB at 166 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.700.ant ---- Oct 18, 2020 07:09:15
Spiral Antenna, Iteration f_lo = 15.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 433
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.16% 
Source  Zr/Zi: 467, +j81.4 ohms
 SWR:  1.95:1
Maxgain: 6.88 dBi at 182 Azim
         7.01 dBi at 48 Elev
F/R: 3.33 dB dB (F/B: 0.01 dB ;0.01 dB at 166 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_15.900.ant ---- Oct 18, 2020 07:09:18
Spiral Antenna, Iteration f_lo = 15.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 433
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.16% 
Source  Zr/Zi: 467, +j81.4 ohms
 SWR:  1.95:1
Maxgain: 6.88 dBi at 182 Azim
         7.01 dBi at 48 Elev
F/R: 3.33 dB dB (F/B: 0.01 dB ;0.01 dB at 166 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_16.100.ant ---- Oct 18, 2020 07:09:21
Spiral Antenna, Iteration f_lo = 16.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 411
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.18% 
Source  Zr/Zi: 426.6, -j374.3 ohms
 SWR:  2.56:1
Maxgain: 6.55 dBi at 182 Azim
         6.93 dBi at 49 Elev
F/R: 2.83 dB dB (F/B: 0.02 dB ;0.02 dB at 135 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_16.300.ant ---- Oct 18, 2020 07:09:26
Spiral Antenna, Iteration f_lo = 16.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 411
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.18% 
Source  Zr/Zi: 426.6, -j374.3 ohms
 SWR:  2.56:1
Maxgain: 6.55 dBi at 182 Azim
         6.93 dBi at 49 Elev
F/R: 2.83 dB dB (F/B: 0.02 dB ;0.02 dB at 135 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_16.500.ant ---- Oct 18, 2020 07:09:29
Spiral Antenna, Iteration f_lo = 16.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 411
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.18% 
Source  Zr/Zi: 426.6, -j374.3 ohms
 SWR:  2.56:1
Maxgain: 6.55 dBi at 182 Azim
         6.93 dBi at 49 Elev
F/R: 2.83 dB dB (F/B: 0.02 dB ;0.02 dB at 135 El)
Total Loss: 0.05 dB (Efficiency: 98.8%)

---- Log_Spiral_f_lo_16.700.ant ---- Oct 18, 2020 07:09:32
Spiral Antenna, Iteration f_lo = 16.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 389
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.4% 
Source  Zr/Zi: 701.6, -j941.8 ohms
 SWR:  3.15:1
Maxgain: 5.24 dBi at 182 Azim
         5.24 dBi at 10.6 Elev
F/R: 3.13 dB dB (F/B: 0.05 dB ;0.05 dB at 169 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_16.900.ant ---- Oct 18, 2020 07:09:36
Spiral Antenna, Iteration f_lo = 16.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 389
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.4% 
Source  Zr/Zi: 701.6, -j941.8 ohms
 SWR:  3.15:1
Maxgain: 5.24 dBi at 182 Azim
         5.24 dBi at 10.6 Elev
F/R: 3.13 dB dB (F/B: 0.05 dB ;0.05 dB at 169 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_17.100.ant ---- Oct 18, 2020 07:09:39
Spiral Antenna, Iteration f_lo = 17.1
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 389
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.4% 
Source  Zr/Zi: 701.6, -j941.8 ohms
 SWR:  3.15:1
Maxgain: 5.24 dBi at 182 Azim
         5.24 dBi at 10.6 Elev
F/R: 3.13 dB dB (F/B: 0.05 dB ;0.05 dB at 169 El)
Total Loss: 0.06 dB (Efficiency: 98.6%)

---- Log_Spiral_f_lo_17.300.ant ---- Oct 18, 2020 07:09:42
Spiral Antenna, Iteration f_lo = 17.3
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 367
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.46% 
Source  Zr/Zi: 2331.1, -j672.2 ohms
 SWR:  2.84:1
Maxgain: 7.99 dBi at 182 Azim
         7.99 dBi at 12 Elev
F/R: 4.49 dB dB (F/B: 0.03 dB ;0.03 dB at 168 El)
Total Loss: 0.06 dB (Efficiency: 98.5%)

---- Log_Spiral_f_lo_17.500.ant ---- Oct 18, 2020 07:09:46
Spiral Antenna, Iteration f_lo = 17.5
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 367
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.46% 
Source  Zr/Zi: 2331.1, -j672.2 ohms
 SWR:  2.84:1
Maxgain: 7.99 dBi at 182 Azim
         7.99 dBi at 12 Elev
F/R: 4.49 dB dB (F/B: 0.03 dB ;0.03 dB at 168 El)
Total Loss: 0.06 dB (Efficiency: 98.5%)

---- Log_Spiral_f_lo_17.700.ant ---- Oct 18, 2020 07:09:49
Spiral Antenna, Iteration f_lo = 17.7
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 367
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.46% 
Source  Zr/Zi: 2331.1, -j672.2 ohms
 SWR:  2.84:1
Maxgain: 7.99 dBi at 182 Azim
         7.99 dBi at 12 Elev
F/R: 4.49 dB dB (F/B: 0.03 dB ;0.03 dB at 168 El)
Total Loss: 0.06 dB (Efficiency: 98.5%)

---- Log_Spiral_f_lo_17.900.ant ---- Oct 18, 2020 07:09:53
Spiral Antenna, Iteration f_lo = 17.9
 Sommerfeld-Norton Ground
Zone 1: Conduct=5 mS; Dielec=13
Nr Segments: 367
 
Freq: 29.7 MHz
Wire/Structure Loss: 1.46% 
Source  Zr/Zi: 2331.1, -j672.2 ohms
 SWR:  2.84:1
Maxgain: 7.99 dBi at 182 Azim
         7.99 dBi at 12 Elev
F/R: 4.49 dB dB (F/B: 0.03 dB ;0.03 dB at 168 El)
Total Loss: 0.06 dB (Efficiency: 98.5%)

