Canadian TV, Computing and Home Theatre Forums banner

41 - 46 of 46 Posts

·
Registered
Joined
·
201 Posts
Discussion Starter #41
I think I answered my own question. Hollands had responded to me a while ago:
Hollands info:
FYI: I conducted a study to determine "best" Vertical Spacings for Screen Grid type Reflector (aka "Fence"), finding that 0.5-in or 1.0-in were equally "most" effective...with more commonly found 2-in separation only a bit less effective. [Horizontal Grid spacings are much less important, so use whatever is available]: Old CM4228 (holl_ands) w Screen Refl
PS: Many of my Screen Grid Optimizations assumed 2x2-in Grid, cuz anything with smaller Vertical Separation had TOO MANY WIRES for 4nec2 to handle....so for these analyses, I've tried to leave a comment that F/B & F/R Rations would be a bit higher using Grid with smaller Vertical Separation.

I also conducted a study to determine "best" Screen Grid WIDTH, esp. to provide the "best" Gain in Hi-VHF Band, cuz with smaller Widths, there is more Hi-VHF Gain to the REAR than Forward. This is much less important if you want a UHF-ONLY Antenna:
M4 (9.5x9) + Various FLAT Refl. Widths
 

·
Registered
Joined
·
201 Posts
Discussion Starter #42
Jop,
I can download the file you posted (link): All the archives this here: Fat_Dipole_4bay
But, I cannot open the files that show in your archive- must I download "WINZIP"?

Thanks,
Schoolbus

Schoolbus

The code is for MMANA-GAL, is an antenna-analyzing tool.

Open MMANA-GAL
File->New-->Edit--->Antenna definition edit---->eraser text and paste code
->ok saved file
WEB

Download Basic version MMANA-GAL (free).

Dipole tubing ⌀ 1" and Reflector tubing ⌀ 1" conflict in 4nec2
Warn.:radius (0.5) above wlen/100 (0.219)
By this reason the antenna was modeler in Mmana-gal
NEC file:
Code:
CM Fat_Dipole_4bay_v2
CM Errors radius (0.5) above wlen/100 (0.219)
CE
GW    1    5    0    0.625    15    0    9.75    15    0.5
GW    2    5    0    -0.625    15    0    -9.75    15    0.5
GW    3    5    0    0.625    5    0    9.75    5    0.5
GW    4    5    0    -0.625    5    0    -9.75    5    0.5
GW    5    5    0    0.625    -5    0    9.75    -5    0.5
GW    6    5    0    -0.625    -5    0    -9.75    -5    0.5
GW    7    5    0    0.625    -15    0    9.75    -15    0.5
GW    8    5    0    -0.625    -15    0    -9.75    -15    0.5
GW    9    3    0    0.625    0    0    0.625    5    0.06377953
GW    10    3    0    0.625    5    0    0.625    11.25    0.06377953
GW    11    1    0    0.625    11.25    0.2519685    0    11.8740157    0.06377953
GW    12    1    0.2519685    0    11.8740157    0    -0.625    12.5    0.06377953
GW    13    1    0    -0.625    12.5    0    -0.625    15    0.06377953
GW    14    3    0    0.625    0    0    0.625    -5    0.06377953
GW    15    3    0    0.625    -5    0    0.625    -11.25    0.06377953
GW    16    1    0    0.625    -11.25    0.2519685    0    -11.874016    0.06377953
GW    17    1    0.2519685    0    -11.874016    0    -0.625    -12.5    0.06377953
GW    18    1    0    -0.625    -12.5    0    -0.625    -15    0.06377953
GW    19    3    0    -0.625    0    0    -0.625    5    0.06377953
GW    20    3    0    -0.625    5    0    -0.625    11.25    0.06377953
GW    21    1    0    -0.625    11.25    -0.2519685    0    11.8740157    0.06377953
GW    22    1    -0.2519685    0    11.8740157    0    0.625    12.5    0.06377953
GW    23    1    0    0.625    12.5    0    0.625    15    0.06377953
GW    24    3    0    -0.625    0    0    -0.625    -5    0.06377953
GW    25    3    0    -0.625    -5    0    -0.625    -11.25    0.06377953
GW    26    1    0    -0.625    -11.25    -0.2519685    0    -11.874016    0.06377953
GW    27    1    -0.2519685    0    -11.874016    0    0.625    -12.5    0.06377953
GW    28    1    0    0.625    -12.5    0    0.625    -15    0.06377953
GW    29    1    0    -0.625    0    0    0.625    0    0.47007874
GW    30    7    -6    0    20    -6    14.875    20    0.5
GW    31    7    -6    0    20    -6    -14.875    20    0.5
GW    32    7    -6    0    12    -6    14.875    12    0.5
GW    33    7    -6    0    12    -6    -14.875    12    0.5
GW    34    7    -6    0    8    -6    14.875    8    0.5
GW    35    7    -6    0    8    -6    -14.875    8    0.5
GW    36    7    -6    0    4    -6    14.875    4    0.5
GW    37    7    -6    0    4    -6    -14.875    4    0.5
GW    38    7    -6    0    0    -6    14.875    0    0.5
GW    39    7    -6    0    0    -6    -14.875    0    0.5
GW    40    7    -6    0    -4    -6    14.875    -4    0.5
GW    41    7    -6    0    -4    -6    -14.875    -4    0.5
GW    42    7    -6    0    -8    -6    14.875    -8    0.5
GW    43    7    -6    0    -8    -6    -14.875    -8    0.5
GW    44    7    -6    0    -12    -6    14.875    -12    0.5
GW    45    7    -6    0    -12    -6    -14.875    -12    0.5
GW    46    7    -6    0    -20    -6    14.875    -20    0.5
GW    47    7    -6    0    -20    -6    -14.875    -20    0.5
GW    48    5    -5    0    10    -5    0    20.75    0.5
GW    49    3    -1.125    0    10    -1.125    0    15.75    0.5
GW    50    5    -5    0    -20.75    -5    0    -10    0.5
GW    51    9    -5    0    -10    -5    0    10    0.5
GW    52    3    -1.125    0    -15.75    -1.125    0    -10    0.5
GW    53    9    -1.125    0    -10    -1.125    0    10    0.5
GW    54    3    -1.125    0    10    -5    0    10    0.12204724
GW    55    3    -1.125    0    -10    -5    0    -10    0.12204724
GW    56    7    -6    0    16    -6    14.875    16    0.5
GW    57    7    -6    0    16    -6    -14.875    16    0.5
GW    58    7    -6    0    -16    -6    14.875    -16    0.5
GW    59    7    -6    0    -16    -6    -14.875    -16    0.5
GS    0    0    0.0254        ' All in in.
GE    0
EX    0    29    1    0    1    0
GN    -1
FR    0    1    0    0    539    0
RP 0 1 360 1000 70 0 0 1 0 0
EN
File Add : Mmanagal and NEC + Simple Screen of managal paste code.
Fat_Dipole_4bay_vE1.maa
Fat_Dipole_4bay_v2.maa
Fat_Dipole_4bay_v2.nec
Fat_Dipole_4bay_vE1.nec
All the archives this here: Fat_Dipole_4bay
 

·
Registered
Joined
·
28 Posts
You must unzip the file, I don't use "WINZIP" but I think it will work for you. I would recommend: 7-zip or winrar.
7-Zip
download file -> Fat_Dipole_4bay.zip in computer, you after unizip with "7-zip" or "Winrar"
 

·
Registered
Joined
·
28 Posts
Tries first copy and paste the text code for MMANA-GAL of the post #24 and #26
Here an image of paste the text code in mmanagal.
Mmana-Gal_paste_code_text.jpg
 

·
Registered
Joined
·
201 Posts
Discussion Starter #45
Major Tom and others,
Curious why no one uses "directors" on these types of antennas? Do they only work with Yagis?
Sincerely,
Schoolbus

I hope I haven't changed this too much. Hoping it would be easier to build and lighter.
Rescaled then re-optimized holl_ands' 8 bay fat dipoles. Reduced refl pairs to 26 total, and reduced the elements to 1/4" copper tubing.
nikiml's nec_opt optimizer is still running with 8 variables, but here is where it's at currently...
peak net gain is ~ 18.2 dBi at ch 32
467.0-611.0 net gain - ave 17.29dBi
As with any vertically stacked antenna, the vertical beam is quite narrow.
12 degrees vbw at ch 32 for example, so you'd wanna make sure your vertical
beam is aimed at the horizon towards distant xmtrs. eg if your in relatively flat terrain nearby, make sure your mast is plumb.

Code:
         --- Gain ---              -- Ratios -- -- Impedance --  
   Freq    Raw    Net   SWR BeamW    F/R    F/B    Real    Imag  AGT  corr
==========================================================================
  467.0  16.12  16.00  1.40  44.7  17.33  19.94  411.55   43.74 1.00 -0.00
  473.0  16.39  16.31  1.32  44.0  17.43  20.66  393.07  -27.10 1.00 -0.00
  479.0  16.61  16.53  1.32  43.4  17.52  21.37  351.55  -74.59 1.00 -0.00
  485.0  16.78  16.67  1.37  42.9  17.59  22.07  305.28  -95.35 1.00 -0.00
  491.0  16.94  16.80  1.44  42.3  17.66  22.76  265.89  -97.46 1.00 -0.00
  497.0  17.07  16.88  1.52  41.8  17.72  23.39  234.30  -90.13 1.00 -0.00
  503.0  17.18  16.94  1.61  41.3  17.78  24.00  209.35  -78.54 1.00 -0.00
  509.0  17.30  17.01  1.69  40.8  17.78  24.52  191.08  -64.21 1.00 -0.00
  515.0  17.41  17.08  1.75  40.3  17.77  24.92  178.46  -47.61 1.00 -0.00
  521.0  17.52  17.15  1.80  39.9  17.76  25.22  169.48  -31.04 1.00 -0.00
  527.0  17.63  17.24  1.84  39.3  17.77  25.41  163.78  -14.27 1.00 -0.00
  533.0  17.74  17.33  1.85  38.6  17.77  25.44  161.88    3.78 1.00 -0.00
  539.0  17.86  17.45  1.87  38.0  17.78  25.38  161.85   22.00 1.00 -0.01
  545.0  17.98  17.57  1.86  37.4  17.81  25.21  165.58   40.62 1.00 -0.01
  551.0  18.10  17.71  1.83  36.9  17.83  24.98  174.24   61.16 1.00 -0.01
  557.0  18.20  17.84  1.80  36.4  17.77  24.68  185.67   80.92 1.00 -0.01
  563.0  18.31  17.98  1.75  35.8  17.72  24.36  204.78  103.43 1.00 -0.01
  569.0  18.40  18.09  1.71  35.3  17.68  24.03  231.20  125.31 1.00 -0.01
  575.0  18.46  18.19  1.66  34.8  17.62  23.69  276.88  146.12 1.00 -0.01
  581.0  18.50  18.23  1.66  34.3  17.60  23.35  334.17  158.07 1.00 -0.01
  587.0  18.47  18.18  1.69  33.8  17.55  23.01  427.82  139.33 1.00 -0.01
  593.0  18.37  18.02  1.78  33.2  17.51  22.66  523.52   61.04 1.00 -0.01
  599.0  18.14  17.67  1.95  32.7  17.38  22.29  561.55  -97.39 1.00 -0.01
  605.0  17.79  17.15  2.18  32.2  17.09  21.88  482.85 -243.48 1.00 -0.01
  611.0  17.11  16.23  2.51  31.6  16.53  21.31  328.25 -297.46 1.00 -0.01
Code:
CM UHF 8-Bay Vertical Fat Dipoles, NO Sweep, 26-Pairs-RR, 4nec2 by holl_ands, 29Aug2014
CM 1/4-in O.D. Elements, 26 Reflector Rods, Hop=1.0-in.  PYTHONSEG(7), 7 Python Variables.
CM DipoleLength=Vrbl, DipoleSpacing=Vrbl, FeedSep=Vrbl (AWG8).  Ignore Fat Wire Warnings.
CM reduce reflector pairs from 43 to 26 pairs - majortom
CM changed elements to 1/4" copper tubing -majortom
CM freq scaled and re-optimized, with nikiml's nec_opt, for 470-611 MHz by majortom 16 Aug 2020
CM
CM 911 Segs so can use default nec2dxs1k6 NEC-Engine, NO Errors or Warnings, UHF AGT=1.0.
CMD--OPT -s(470,14,10) -t(16,18) --swr-target=1.5 --f2r-target=20 --f2b-target=20 --de-np=80 -r restart.log
CMD--OPT --seed-with-input --target-function=(4*max_ml+16*max_gain_diff+4*max_f2r_diff+max_f2b_diff)/25
CMD--OPT --auto-segmentation=7 --char-impedance=300 --validate-geometry=0 --num-cores=8
CM D--EVAL --auto-segmentation=0 --char-impedance=300 --num-cores=2
CM D--EVAL -s(470,6,24) --total-gain --centers --publish
CE
' Simulated SOURCE Wire Radius, Adjust for AGT=1.0: UHF=0.529
SY Freqscale=1
SY Rsrc=0.112 * (Freqscale) / (Freqscale)
SY Rdip=0.125
SY Rfeed=0.06425
' Dipole-To-Dipole Separation:
SY DDSep=10.4541534' 7, 15
' Dipole Half-Length (cut down from BOUVAL's 9.75-in, may round to 1/8-inch):
SY DLen=10.3646524' 5, 12
SY DSwp=0
' Separation between two FEEDLINE wires:
SY FeedSep=1.0141217' 1, 6
' From center of Feedline Cross-Over to center of OUTER Dipoles:
SY ZCross=1.9326030' 1.375, 8.25
SY Hop=1
SY Cond=2e+07
'
' Reflector Rod Separation behind Dipoles (may round to 1/8-in):
SY RS=5.0711547' 3, 25
' Reflector Rod-to-Rod Separation (may round to 1/8-in):
SY RR=2.9984182' 1.5, 3
' Reflector Rod Half-Lengths (may round to 1/8-in):
SY YRod=15.4357051' 10, 30
SY Rrod=0.1875
' Gap Between each Reflector Rod Pair:
SY Rgap=0.2522895' 0.25, 25
'
' Calculated from above INPUT Values:
SY ZDInr=DDSep/2' Distance from antenna center to center of INNER Dipole
SY ZDMid=DDSep/2+DDSep' Distance from antenna center to center of LOWER-MIDDLE Dipole
SY Z1=ZDMid
SY Z2=ZDMid
SY Z3=ZDMid
SY Z4=ZDMid-ZCross+0.875
SY Z5=ZDMid-ZCross
SY Z6=ZDMid-ZCross-0.875
SY Z7=ZDInr
SY Z8=ZDInr
SY Z9=ZDInr
SY Z11=DDSep+ZDMid
SY Z12=DDSep+ZDMid
SY Z13=DDSep+ZDMid
SY Z14=DDSep+ZDMid-ZCross+0.875
SY Z15=DDSep+ZDMid-ZCross
SY Z16=DDSep+ZDMid-ZCross-0.875
SY Z17=DDSep+ZDInr
SY Z18=DDSep+ZDInr
SY Z19=DDSep+ZDInr
SY Z21=2*DDSep+ZDMid
SY Z22=2*DDSep+ZDMid
SY Z23=2*DDSep+ZDMid
SY Z24=2*DDSep+ZDMid-ZCross+0.875
SY Z25=2*DDSep+ZDMid-ZCross
SY Z26=2*DDSep+ZDMid-ZCross-0.875
SY Z27=2*DDSep+ZDInr
SY Z28=2*DDSep+ZDInr
SY Z29=2*DDSep+ZDInr
SY YDInr=FeedSep/2+(DLen^2-DSwp^2)^0.5' Ymax for Inner Dipoles
SY YDOut=FeedSep/2+(DLen^2-DSwp^2)^0.5' Ymax for Outer Dipoles
'
'  #    segs    X1      Y1        Z1     X2        Y2         Z2    radius
' SIMULATED SOURCE WIRE:
GW  1     3    +RS    -FeedSep/2    0.0     +RS        FeedSep/2     0.0    Rsrc' #ff0
' INNER DIPOLES:
GW  2     9   DSwp+RS     YDInr         Z7     +RS        FeedSep/2     Z8    Rdip' #00f
GW  3     9    +RS    -FeedSep/2     Z8   DSwp+RS    -YDInr     Z7    Rdip
GW  4     9   DSwp+RS     YDInr        -Z7    +RS        FeedSep/2    -Z8    Rdip
GW  5     9    +RS    -FeedSep/2    -Z8   DSwp+RS    -YDInr    -Z7    Rdip
' LOWER-MIDDLE DIPOLES:
GW  6     9   DSwp+RS     YDOut         Z1      +RS        FeedSep/2     Z2    Rdip
GW  7     9    +RS    -FeedSep/2     Z2   DSwp+RS    -YDOut     Z1    Rdip
GW  8     9   DSwp+RS     YDOut        -Z1      +RS        FeedSep/2    -Z2    Rdip
GW  9     9    +RS    -FeedSep/2    -Z2   DSwp+RS    -YDOut    -Z1    Rdip
' OUTER-MIDDLE DIPOLES:
GW 10     9   DSwp+RS     YDOut         Z11     +RS        FeedSep/2     Z12    Rdip
GW 11     9    +RS    -FeedSep/2     Z12  DSwp+RS   -YDOut     Z11    Rdip
GW 12     9   DSwp+RS     YDOut        -Z11      +RS        FeedSep/2    -Z12    Rdip
GW 13     9    +RS    -FeedSep/2    -Z12  DSwp+RS   -YDOut    -Z11    Rdip
' OUTER DIPOLES:
GW 14     9   DSwp+RS     YDOut         Z21     +RS        FeedSep/2     Z22    Rdip
GW 15     9    +RS    -FeedSep/2     Z22  DSwp+RS   -YDOut     Z21    Rdip
GW 16     9   DSwp+RS     YDOut        -Z21      +RS        FeedSep/2    -Z22    Rdip
GW 17     9    +RS    -FeedSep/2    -Z22  DSwp+RS   -YDOut    -Z21    Rdip
' CENTER FEEDLINE:
GW 18     5    +RS     FeedSep/2     Z8     +RS        FeedSep/2     0.0    Rfeed' #0f0
GW 19     5    +RS    -FeedSep/2     Z8     +RS       -FeedSep/2     0.0    Rfeed
GW 20     5    +RS     FeedSep/2    -Z8     +RS        FeedSep/2     0.0    Rfeed
GW 21     5     +RS    -FeedSep/2    -Z8     +RS       -FeedSep/2     0.0    Rfeed
' INNER CROSS-OVER FEEDLINE:
GW 22     1    +RS     FeedSep/2     Z2     +RS        FeedSep/2     Z4    Rfeed
GW 23     1    +RS    -FeedSep/2     Z2     +RS       -FeedSep/2     Z4    Rfeed
GW 24     9    +RS     FeedSep/2     Z6     +RS        FeedSep/2     Z8    Rfeed
GW 25     9    +RS    -FeedSep/2     Z6     +RS       -FeedSep/2     Z8    Rfeed
GW 26     3    +RS    -FeedSep/2     Z6   Hop/2+RS   0.0     Z5    Rfeed
GW 27     3    +RS     FeedSep/2     Z4   Hop/2+RS   0.0     Z5    Rfeed
GW 28     3    +RS     FeedSep/2     Z6  -Hop/2+RS   0.0     Z5    Rfeed
GW 29     3    +RS    -FeedSep/2     Z4  -Hop/2+RS   0.0     Z5    Rfeed
GW 30     1    +RS     FeedSep/2    -Z2     +RS        FeedSep/2    -Z4    Rfeed
GW 31     1    +RS    -FeedSep/2    -Z2     +RS       -FeedSep/2    -Z4    Rfeed
GW 32     9    +RS     FeedSep/2    -Z6     +RS        FeedSep/2    -Z8    Rfeed
GW 33     9    +RS    -FeedSep/2    -Z6     +RS       -FeedSep/2    -Z8    Rfeed
GW 34     3    +RS    -FeedSep/2    -Z6  -Hop/2+RS   0.0    -Z5    Rfeed
GW 35     3    +RS     FeedSep/2    -Z4  -Hop/2+RS   0.0    -Z5    Rfeed
GW 36     3    +RS     FeedSep/2    -Z6  +Hop/2+RS   0.0    -Z5    Rfeed
GW 37     3    +RS    -FeedSep/2    -Z4  +Hop/2+RS   0.0    -Z5    Rfeed
' LOWER-MIDDLE CROSS-OVER FEEDLINE:
GW 38     1    +RS     FeedSep/2     Z12     +RS        FeedSep/2     Z14    Rfeed
GW 39     1    +RS    -FeedSep/2     Z12     +RS       -FeedSep/2     Z14    Rfeed
GW 40     3    +RS    -FeedSep/2     Z16   Hop/2+RS  0.0     Z15    Rfeed
GW 41     3    +RS     FeedSep/2     Z14   Hop/2+RS  0.0     Z15    Rfeed
GW 42     3    +RS     FeedSep/2     Z16  -Hop/2+RS  0.0     Z15    Rfeed
GW 43     3    +RS    -FeedSep/2     Z14  -Hop/2+RS  0.0     Z15    Rfeed
GW 44     9    +RS     FeedSep/2     Z16     +RS        FeedSep/2     Z18    Rfeed
GW 45     9    +RS    -FeedSep/2     Z16     +RS       -FeedSep/2     Z18    Rfeed
GW 46     1    +RS     FeedSep/2    -Z12     +RS        FeedSep/2    -Z14    Rfeed
GW 47     1    +RS    -FeedSep/2    -Z12     +RS       -FeedSep/2    -Z14    Rfeed
GW 48     3    +RS    -FeedSep/2    -Z16  -Hop/2+RS  0.0    -Z15    Rfeed
GW 49     3    +RS     FeedSep/2    -Z14  -Hop/2+RS  0.0    -Z15    Rfeed
GW 50     3    +RS     FeedSep/2    -Z16  +Hop/2+RS  0.0    -Z15    Rfeed
GW 51     3    +RS    -FeedSep/2    -Z14  +Hop/2+RS  0.0    -Z15    Rfeed
GW 52     9    +RS     FeedSep/2    -Z16     +RS        FeedSep/2    -Z18    Rfeed
GW 53     9    +RS    -FeedSep/2    -Z16     +RS       -FeedSep/2    -Z18    Rfeed
' OUTER CROSS-OVER FEEDLINE:
GW 54     1    +RS     FeedSep/2     Z22     +RS        FeedSep/2     Z24    Rfeed
GW 55     1    +RS    -FeedSep/2     Z22     +RS       -FeedSep/2     Z24    Rfeed
GW 56     3    +RS    -FeedSep/2     Z26   Hop/2+RS  0.0     Z25    Rfeed
GW 57     3    +RS     FeedSep/2     Z24   Hop/2+RS  0.0     Z25    Rfeed
GW 58     3    +RS     FeedSep/2     Z26  -Hop/2+RS  0.0     Z25    Rfeed
GW 59     3    +RS    -FeedSep/2     Z24  -Hop/2+RS  0.0     Z25    Rfeed
GW 60     9    +RS     FeedSep/2     Z26     +RS        FeedSep/2     Z28    Rfeed
GW 61     9    +RS    -FeedSep/2     Z26     +RS       -FeedSep/2     Z28    Rfeed
GW 62     1    +RS     FeedSep/2    -Z22     +RS        FeedSep/2    -Z24    Rfeed
GW 63     1    +RS    -FeedSep/2    -Z22     +RS       -FeedSep/2    -Z24    Rfeed
GW 64     3    +RS    -FeedSep/2    -Z26  -Hop/2+RS  0.0    -Z25    Rfeed
GW 65     3    +RS     FeedSep/2    -Z24  -Hop/2+RS  0.0    -Z25    Rfeed
GW 66     3    +RS     FeedSep/2    -Z26  +Hop/2+RS  0.0    -Z25    Rfeed
GW 67     3    +RS    -FeedSep/2    -Z24  +Hop/2+RS  0.0    -Z25    Rfeed
GW 68     9    +RS     FeedSep/2    -Z26     +RS        FeedSep/2    -Z28    Rfeed
GW 69     9    +RS    -FeedSep/2    -Z26     +RS       -FeedSep/2    -Z28    Rfeed
'
' UP TO 43 PAIRS OF REFLECTOR RODS:
GW 78 9 0.0 -YRod 13*RR  0.0 -Rgap/2 13*RR  Rrod' #000
GW 79 9 0.0 -YRod 12*RR  0.0 -Rgap/2 12*RR  Rrod' #000
GW 80 9 0.0 -YRod 11*RR  0.0 -Rgap/2 11*RR  Rrod'
GW 81 9 0.0 -YRod 10*RR  0.0 -Rgap/2 10*RR  Rrod
GW 82 9 0.0 -YRod  9*RR  0.0 -Rgap/2  9*RR  Rrod
GW 83 9 0.0 -YRod  8*RR  0.0 -Rgap/2  8*RR  Rrod
GW 84 9 0.0 -YRod  7*RR  0.0 -Rgap/2  7*RR  Rrod
GW 85 9 0.0 -YRod  6*RR  0.0 -Rgap/2  6*RR  Rrod
GW 86 9 0.0 -YRod  5*RR  0.0 -Rgap/2  5*RR  Rrod
GW 87 9 0.0 -YRod  4*RR  0.0 -Rgap/2  4*RR  Rrod
GW 88 9 0.0 -YRod  3*RR  0.0 -Rgap/2  3*RR  Rrod
GW 89 9 0.0 -YRod  2*RR  0.0 -Rgap/2  2*RR  Rrod
GW 90 9 0.0 -YRod  1*RR  0.0 -Rgap/2  1*RR  Rrod
'
GW 98  9 0.0 YRod 13*RR  0.0 Rgap/2 13*RR  Rrod
GW 99  9 0.0 YRod 12*RR  0.0 Rgap/2 12*RR  Rrod
GW 100 9 0.0 YRod 11*RR  0.0 Rgap/2 11*RR  Rrod
GW 101 9 0.0 YRod 10*RR  0.0 Rgap/2 10*RR  Rrod
GW 102 9 0.0 YRod  9*RR  0.0 Rgap/2  9*RR  Rrod
GW 103 9 0.0 YRod  8*RR  0.0 Rgap/2  8*RR  Rrod
GW 104 9 0.0 YRod  7*RR  0.0 Rgap/2  7*RR  Rrod
GW 105 9 0.0 YRod  6*RR  0.0 Rgap/2  6*RR  Rrod
GW 106 9 0.0 YRod  5*RR  0.0 Rgap/2  5*RR  Rrod
GW 107 9 0.0 YRod  4*RR  0.0 Rgap/2  4*RR  Rrod
GW 108 9 0.0 YRod  3*RR  0.0 Rgap/2  3*RR  Rrod
GW 109 9 0.0 YRod  2*RR  0.0 Rgap/2  2*RR  Rrod
GW 110 9 0.0 YRod  1*RR  0.0 Rgap/2  1*RR  Rrod
'
GW 111 9 0.0 -YRod  -1*RR 0.0 -Rgap/2   -1*RR Rrod
GW 112 9 0.0 -YRod  -2*RR 0.0 -Rgap/2   -2*RR Rrod
GW 113 9 0.0 -YRod  -3*RR 0.0 -Rgap/2   -3*RR Rrod
GW 114 9 0.0 -YRod  -4*RR 0.0 -Rgap/2   -4*RR Rrod
GW 115 9 0.0 -YRod  -5*RR 0.0 -Rgap/2   -5*RR Rrod
GW 116 9 0.0 -YRod  -6*RR 0.0 -Rgap/2   -6*RR Rrod
GW 117 9 0.0 -YRod  -7*RR 0.0 -Rgap/2   -7*RR Rrod
GW 118 9 0.0 -YRod  -8*RR 0.0 -Rgap/2   -8*RR Rrod
GW 119 9 0.0 -YRod  -9*RR 0.0 -Rgap/2   -9*RR Rrod
GW 120 9 0.0 -YRod -10*RR 0.0 -Rgap/2  -10*RR Rrod
GW 121 9 0.0 -YRod -11*RR 0.0 -Rgap/2  -11*RR Rrod
GW 122 9 0.0 -YRod -12*RR 0.0 -Rgap/2  -12*RR Rrod
GW 123 9 0.0 -YRod -13*RR 0.0 -Rgap/2  -13*RR Rrod
'
GW 131 9 0.0 YRod  -1*RR 0.0 Rgap/2  -1*RR Rrod
GW 132 9 0.0 YRod  -2*RR 0.0 Rgap/2  -2*RR Rrod
GW 133 9 0.0 YRod  -3*RR 0.0 Rgap/2  -3*RR Rrod
GW 134 9 0.0 YRod  -4*RR 0.0 Rgap/2  -4*RR Rrod
GW 135 9 0.0 YRod  -5*RR 0.0 Rgap/2  -5*RR Rrod
GW 136 9 0.0 YRod  -6*RR 0.0 Rgap/2  -6*RR Rrod
GW 137 9 0.0 YRod  -7*RR 0.0 Rgap/2  -7*RR Rrod
GW 138 9 0.0 YRod  -8*RR 0.0 Rgap/2  -8*RR Rrod
GW 139 9 0.0 YRod  -9*RR 0.0 Rgap/2  -9*RR Rrod
GW 140 9 0.0 YRod -10*RR 0.0 Rgap/2 -10*RR Rrod
GW 141 9 0.0 YRod -11*RR 0.0 Rgap/2 -11*RR Rrod
GW 142 9 0.0 YRod -12*RR 0.0 Rgap/2 -12*RR Rrod
GW 143 9 0.0 YRod -13*RR 0.0 Rgap/2 -13*RR Rrod
'
'GW 151 9 0.0 -YRod    0.0   0.0 -Rgap/2  0.0   Rrod    ' CENTER RR
'GW 152 9 0.0  Rgap/2  0.0   0.0  YRod    0.0   Rrod    ' CENTER RR
'
GS 0 0 0.0254*Freqscale            ' CONVERT ABOVE FROM INCHES TO METERS FOR NEC.
GE 0                ' No Ground Plane
GN -1                ' Free Space
EK 0                ' Enable Extended Kernel
LD 5 0 0 0 Cond 0        ' Conductivity
EX 0 1 1 0 1 0        ' SOURCE on GW1, seg 1
'
' FR Freq Sweep choices in order of increasing calculation time (fm holl_ands):
' FR 0 29 0 0 470 12      ' Freq Sweep 470-806 every 12 MHz - OLD UHF BAND
FR 0 39 0 0 470 6        ' Freq Sweep 470-698 every 6 MHz - PREFERRED FOR UHF
' FR 0 77 0 0 470 3        ' Freq Sweep 470-698 every 3 MHz
' FR 0 153 0 0 470 1.5    ' Freq Sweep 470-698 every 1.5 MHz
' FR 0 71 0 0 300 10    ' Freq Sweep 300-1000 every 10 MHz - WIDEBAND SWEEP
' FR Hi-VHF choices:
' FR 0 15 0 0 174 3        ' Freq Sweep 174-216 every 3 MHz
' FR 0 29 0 0 174 1.5    ' Freq Sweep 174-216 every 1.5 MHz - PREFERRED
' FR 0 43 0 0 174 1        ' Freq Sweep 174-216 every 1 MHz - Hi-Rez
' FR 0 26 0 0 150 6        ' Freq Sweep 150-300 every 6 MHz - WIDEBAND SWEEP
' FR Lo-VHF choices:
' FR 0 19 0 0 54 3        ' Frequency Sweep every 3 MHz for Ch2-6 + FM
' FR 0 35 0 0 54 1        ' Frequency Sweep every 1 MHz for Ch2-6
' FR 0 36 0 0 75 1        ' Frequency Sweep every 1 MHz for Ch5 + Ch6 + FM
' RP choices in order of increasing calculation time:
' RP 0 1 1 1510 90 0 1 1 0 0    ' 1D Gain toward 90-deg Azimuth
' RP 0 1 37 1510 90 0 1 5 0 0     ' 2D (Left only) Azimuthal Gain Slice
RP 0 1 73 1510 90 0 1 5 0 0      ' 2D Azimuthal Gain Slice - PREFERRED
' RP 0 73 1 1510 90 0 5 1 0 0     ' 2D Elevation Gain Slice
' RP 0 73 73 1510 90 0 5 5 0 0     ' 3D Lower Hemisphere reveals antenna
' RP 0 285 73 1510 90 0 5 5 0 0    ' 3D Full Coverage obscures antenna
EN
 
41 - 46 of 46 Posts
Top