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HiVHF+UHF HUM4 (9.5x9) + 2Sizes ReflRods
Hi-VHF + UHF HUM4 (9.5x9-in) with 2 Sizes of Reflector Rods (RR) analyzed using 4nec2.

Nikiml's new CMD--OPT Python Script Optimization commands are now embedded in 4nec2 Files,
where the fol. is the contents of the *.bat Python Control File (your's may vary):

cd c:\Python27
python -m nec.opt --num-cores=7 HUM4_9-5_9_BS0_4+7RR-2Sizes_PY.nec
pause

Two examples are shown, a sparse lower performance model and a medium performance model
where I chose the number of RR's for roughly equal F/B Ratio in each Band out of the
twelve I've run thus far.  Note there are about TWICE as many UHF RR's as for Hi-VHF.
(More runs are planned, esp. with more RR's.)

Hi-VHF SWR is just a bit over desired 2.7 target, which I could fix by adjusting
Target Function to increase the "importance" (multiplier) for the "max_ml" term.
But instead I ran a Parameter Sweep for RS (Hi-VHF Rod-to-Bowtie Separation),
allowing a user to PICK whether they want MORE GAIN (smaller RS) or BETTER SWR (larger RS).

===========================================================
a) HUM4+4RR+7RR with 4-RR for Hi-VHF and 7-RR for UHF:
Bowtie-to-Hi-VHF-RR Separation RS=13.0
Bowtie-to-UHF-RR Separation-in RS2=5.5-in

UHF Raw Gain = 10.3 to 13.7 dBi, F/B & F/R Ratio Min = 11.9 dB and SWR (300-ohms) Under 2.4.
Hi-VHF Raw Gain = 6.4 to 7.0 to 6.7 dBi, F/B & F/R Ratio Min = 13.3 dB and SWR (300-ohms) Under 3.4.

===========================================================
b) HUM4+8RR+15RR with 8-RR for Hi-VHF and 15-RR for UHF:
Bowtie-to-Hi-VHF-RR Separation RS=13.0 [Or 14.5-in to push Hi-VHF SWR under 2.8 with 0.5 dB Gain reduction.]
Bowtie-to-UHF-RR Separation-in RS2=5.5-in

UHF Raw Gain = 11.9 to 14.9 to 14.5 dBi, F/B & F/R Ratio Min = 15.3 dB and SWR (300-ohms) Under 2.5.
Hi-VHF Raw Gain = 6.6 to 7.5 to 7.2 dBi, F/B & F/R Ratio Min = 15.1 dB and SWR (300-ohms) Under 3.2.

c) T.B.D.
Date(s): 9 Jan 2014. Album by holl_ands. 1 - 42 of 42 Total. 8999 Visits.
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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
3D View


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Front View
[1 large square = 2.5 inches]


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Side View
[1 large square = 2.5 inches]


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
UHF Raw Gain = 10.3 to 13.7 dBi
UHF F/B & F/R Ratio Minimum = 11.9 dB


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
UHF SWR (300-ohms) Under 2.4


Enlarge photo 6
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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
UHF Impedance


Enlarge photo 7
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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 470 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 530 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 590 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 650 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 698 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 758 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 806 MHz


Enlarge Microsoft Word Document 14
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DOC14
HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
4nec2 File


Enlarge photo 15
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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
RS Parameter Sweep (Hi-VHF RR-to-Bowtie Separation)
Increasing RS reduces SWR with moderate Gain Loss


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Hi-VHF Raw Gain = 6.4 to 7.0 to 6.7 dBi
Hi-VHF F/B & F/R Ratio Minimum = 13.3 dB


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Hi-VHF SWR (300-ohms) Under 3.4


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Hi-VHF Impedance


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 174 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 198 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 4RR + 7RR
Azimuthal Pattern at 216 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
3D View


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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Front View
[1 large square = 5 inches]


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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Side View
[1 large square = 2.5 inches]


Enlarge photo 25
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
UHF Raw Gain = 11.9 to 14.9 to 14.5 dBi
UHF F/B & F/R Ratio Minimum = 15.3 dB


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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
UHF SWR (300-ohms) Under 2.5


Enlarge photo 27
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
UHF Impedance


Enlarge photo 28
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 470 MHz


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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 530 MHz


Enlarge photo 30
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 590 MHz


Enlarge photo 31
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 650 MHz


Enlarge photo 32
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 698 MHz


Enlarge photo 33
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33
HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 758 MHz


Enlarge photo 34
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 806 MHz


Enlarge Microsoft Word Document 35
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DOC35
HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
4nec2 File


Enlarge photo 36
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36
HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
RS Parameter Sweep (Hi-VHF RR-to-Bowtie Separation)
Increasing RS reduces SWR with moderate Gain Loss


Enlarge photo 37
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37
HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Hi-VHF Raw Gain = 6.6 to 7.5 to 7.2 dBi
Hi-VHF F/B & F/R Ratio Minimum = 15.1 dB


Enlarge photo 38
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
UHF SWR (300-ohms) Under 3.2


Enlarge photo 39
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
UHF Impedance


Enlarge photo 40
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 174 MHz


Enlarge photo 41
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41
HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 198 MHz


Enlarge photo 42
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HiVHF+UHF HUM4 (9.5x9-in) + 8RR + 15RR
Azimuthal Pattern for 216 MHz


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