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Discussion Starter #1 (Edited)
This thread has been created strictly for Antenna Modelers and Builders who like to live not just on the leading edge but on the bleeding edge of antenna research and development.

Area 51 is for posting and discussion of any computer model of any experimental antenna by Antenna Modelers and Builders

Area 51 is not for casual builders or newcomers to ask questions or look for useable home antennas. Participants here are expected to fairly well "know their stuff".

If an antenna design is shown to be worthwhile for general public consumption we will move it out of Area 51 into the main Antenna Research & Development Forum.

Just remember what the ancient map makers wrote when they had no further info to illustrate: "Beyond here be dragons!"
 

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I'm working on a fully-paramerterised (i.e. symbols all over the place) second-generation koch curve single diamond one right now. So far it's got about a 9 dB gain, but the SWR is crappy, so I'm adding more parameters to the optimiser in 4nec2.
 

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Discussion Starter #5
Model naming convention

Great - I'm suggesting a model naming convention to prevent confusion if/when discussions overlap:

When you post a new model, name it X-[post number here] i.e. if your first post of it is #789 the model would thus be the X-789.

Does that sound reasonable?
 

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Does that sound reasonable?
Sounds as good as any. Autofils and I tried to come up with some sort of logical naming scheme for the GHs and just couldnt do it. Almost gives me a headache thinking about it, heh. :p
 

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Discussion Starter #7
At least this way the original post can be sourced right away... sort of like the old RG cable numbering scheme referred to pages in a book. :)
 

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The results of 4nec2's optimizer on a single-iteration of the Koch Curve for a one-diamond reflector-less GH. High SWR on the lower UHF channels, low gain on the higher ones, But from 518 MHz and higher SWR is under 4, and forward gain is between 8 and 10 for 470-668 MHz. Not bad for almost fitting in a half meter by half meter square.
The goal here is an indoor antenna that will fit behind a picture frame, for a relative that has reasonably decent signal strength. I'll probably try next making it a second iteration Koch Curve on at least the longer leg of the element.
Code:
CM Experimental Antenna Design X-008
CM Parameterized Reflectorless Single Diamond Grey Hoverman 
CM single iteration Koch Curve
CM UHF Antenna
CM AWG Gauge 12 Copper Wire
CE
SY gap=0.047743
SY segment_0_length=0.238629
SY segment_1_length=0.115095
SY tail_length=0.156403
SY wire_radius=1.0262e-03
SY sin045=0.707107
SY cos045=0.707107
SY sin075=0.965926
SY cos075=0.258819
SY sin135=0.707107
SY cos135=-0.707107
SY sin345=-0.258819
SY cos345=0.965926
SY s0_y0=gap-cos135*segment_0_length
SY s0_z0=0
SY s0_y1=s0_y0+0.333333*cos135*segment_0_length
SY s0_z1=s0_z0+0.333333*sin135*segment_0_length
SY s0_y2=s0_y1+0.333333*cos075*segment_0_length
SY s0_z2=s0_z1+0.333333*sin075*segment_0_length
SY s0_y3=s0_y0+0.666667*cos135*segment_0_length
SY s0_z3=s0_z0+0.666667*sin135*segment_0_length
SY s1_y0=gap
SY s1_z0=sin135*segment_0_length
SY s1_y1=s1_y0+0.333333*cos045*segment_1_length
SY s1_z1=s1_z0+0.333333*sin045*segment_1_length
SY s1_y2=s1_y1+0.333333*cos345*segment_1_length
SY s1_z2=s1_z1+0.333333*sin345*segment_1_length
SY s1_y3=s1_y0+0.666667*cos045*segment_1_length
SY s1_z3=s1_z0+0.666667*sin045*segment_1_length
SY tail_y0=gap+cos045*segment_1_length
SY tail_z0=sin135*segment_0_length+sin045*segment_1_length
SY tail_y1=gap+cos045*segment_1_length+tail_length
GW      1       17      0      -s0_y0    s0_z0   0       s0_y0    s0_z0   wire_radius
GW      2       3       0       s0_y0    s0_z0   0       s0_y1    s0_z1   wire_radius
GW      3       3       0       s0_y1    s0_z1   0       s0_y2    s0_z2   wire_radius
GW      4       3       0       s0_y2    s0_z2   0       s0_y3    s0_z3   wire_radius
GW      5       3       0       s0_y3    s0_z3   0       s1_y0    s1_z0   wire_radius
GW      6       3       0       s1_y0    s1_z0   0       s1_y1    s1_z1   wire_radius
GW      7       3       0       s1_y1    s1_z1   0       s1_y2    s1_z2   wire_radius
GW      8       3       0       s1_y2    s1_z2   0       s1_y3    s1_z3   wire_radius
GW      9       3       0       s1_y3    s1_z3   0     tail_y0  tail_z0   wire_radius
GW     10       3       0     tail_y0  tail_z0   0     tail_y1  tail_z0   wire_radius
GW     11       3       0      -s0_y0    s0_z0   0      -s0_y1    s0_z1   wire_radius
GW     12       3       0      -s0_y1    s0_z1   0      -s0_y2    s0_z2   wire_radius
GW     13       3       0      -s0_y2    s0_z2   0      -s0_y3    s0_z3   wire_radius
GW     14       3       0      -s0_y3    s0_z3   0      -s1_y0    s1_z0   wire_radius
GW     15       3       0      -s1_y0    s1_z0   0      -s1_y1    s1_z1   wire_radius
GW     16       3       0      -s1_y1    s1_z1   0      -s1_y2    s1_z2   wire_radius
GW     17       3       0      -s1_y2    s1_z2   0      -s1_y3    s1_z3   wire_radius
GW     18       3       0      -s1_y3    s1_z3   0    -tail_y0  tail_z0   wire_radius
GW     19       3       0    -tail_y0  tail_z0   0    -tail_y1  tail_z0   wire_radius
GW     20       3       0       s0_y0   -s0_z0   0       s0_y1   -s0_z1   wire_radius
GW     21       3       0       s0_y1   -s0_z1   0       s0_y2   -s0_z2   wire_radius
GW     22       3       0       s0_y2   -s0_z2   0       s0_y3   -s0_z3   wire_radius
GW     23       3       0       s0_y3   -s0_z3   0       s1_y0   -s1_z0   wire_radius
GW     24       3       0       s1_y0   -s1_z0   0       s1_y1   -s1_z1   wire_radius
GW     25       3       0       s1_y1   -s1_z1   0       s1_y2   -s1_z2   wire_radius
GW     26       3       0       s1_y2   -s1_z2   0       s1_y3   -s1_z3   wire_radius
GW     27       3       0       s1_y3   -s1_z3   0     tail_y0 -tail_z0   wire_radius
GW     28       3       0     tail_y0 -tail_z0   0     tail_y1 -tail_z0   wire_radius
GW     29       3       0      -s0_y0   -s0_z0   0      -s0_y1   -s0_z1   wire_radius
GW     30       3       0      -s0_y1   -s0_z1   0      -s0_y2   -s0_z2   wire_radius
GW     31       3       0      -s0_y2   -s0_z2   0      -s0_y3   -s0_z3   wire_radius
GW     32       3       0      -s0_y3   -s0_z3   0      -s1_y0   -s1_z0   wire_radius
GW     33       3       0      -s1_y0   -s1_z0   0      -s1_y1   -s1_z1   wire_radius
GW     34       3       0      -s1_y1   -s1_z1   0      -s1_y2   -s1_z2   wire_radius
GW     35       3       0      -s1_y2   -s1_z2   0      -s1_y3   -s1_z3   wire_radius
GW     36       3       0      -s1_y3   -s1_z3   0    -tail_y0 -tail_z0   wire_radius
GW     37       3       0    -tail_y0 -tail_z0   0    -tail_y1 -tail_z0   wire_radius
GE      0
LD      5       0       0       0       58000000
GN      -1
EK
EX      0       1       9      0       1.0
FR      0       38      0       0       470     6
RP      0       1       61      1001    90      0       3       6       10000   0
EN
 

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making it a second iteration Koch Curve on at least the longer leg of the element.
firimari, thats a somewhat perfect example of what belongs in this thread, stuff thats cool (like my quad and octal GHs), yet probably shouldnt be built using techniques yet available to us. (I think I could build the above correctly, but wouldnt recommend others to do so)
 

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Thanks for the compliment, 300ohm. Last night I was able to get the second iteration modelled, though I had to up the number of symbols that 4nec will evaluate. I could have spent a little more time simplifying my model to do that, but I just upped the max symbols to 128 instead. Anyway, close to the same results, but it looks prettier and is shorter (but not less wide)

Two lengths of 1468 mm long 12 gauge wire form the elements and the middle segment is 433mm long (which will get split in the middle for a 4:1 balun) Hopefully I can find time to build this soon.


Code:
CM Experimental Antenna Design X-010
CM Parameterized Reflectorless Single Diamond Grey Hoverman 
CM Second Iteration Koch Curve
CM UHF Antenna
CM AWG Gauge 12 Copper Wire
CE
SY gap=0.047743
SY segment_0_length=0.238629
SY segment_1_length=0.115095
SY tail_length=0.156403
SY wire_radius=1.0262e-03
SY sin015=0.258819
SY cos015=0.965926
SY sin045=0.707107
SY cos045=0.707107
SY sin075=0.965926
SY cos075=0.258819
SY sin135=0.707107
SY cos135=-0.707107
SY sin195=-0.258819
SY cos195=-0.965925
SY sin345=-0.258819
SY cos345=0.965926
SY s0_y00=gap-cos135*segment_0_length
SY s0_z00=0
SY s0_y01=s0_y00+0.111111*cos135*segment_0_length
SY s0_z01=s0_z00+0.111111*sin135*segment_0_length
SY s0_y02=s0_y01+0.111111*cos075*segment_0_length
SY s0_z02=s0_z01+0.111111*sin075*segment_0_length
SY s0_y03=s0_y00+0.222222*cos135*segment_0_length
SY s0_z03=s0_z00+0.222222*sin135*segment_0_length
SY s0_y04=s0_y00+0.333333*cos135*segment_0_length
SY s0_z04=s0_z00+0.333333*sin135*segment_0_length
SY s0_y05=s0_y04+0.111111*cos075*segment_0_length
SY s0_z05=s0_z04+0.111111*sin075*segment_0_length
SY s0_y06=s0_y05+0.111111*cos015*segment_0_length
SY s0_z06=s0_z05+0.111111*sin015*segment_0_length
SY s0_y07=s0_y04+0.222222*cos075*segment_0_length
SY s0_z07=s0_z04+0.222222*sin075*segment_0_length
SY s0_y08=s0_y04+0.333333*cos075*segment_0_length
SY s0_z08=s0_z04+0.333333*sin075*segment_0_length
SY s0_y09=s0_y08+0.111111*cos195*segment_0_length
SY s0_z09=s0_z08+0.111111*sin195*segment_0_length
SY s0_y10=s0_y09+0.111111*cos135*segment_0_length
SY s0_z10=s0_z09+0.111111*sin135*segment_0_length
SY s0_y11=s0_y08+0.222222*cos195*segment_0_length
SY s0_z11=s0_z08+0.222222*sin195*segment_0_length
SY s0_y12=s0_y00+0.666667*cos135*segment_0_length
SY s0_z12=s0_z00+0.666667*sin135*segment_0_length
SY s0_y13=s0_y00+0.777778*cos135*segment_0_length
SY s0_z13=s0_z00+0.777778*sin135*segment_0_length
SY s0_y14=s0_y13+0.111111*cos075*segment_0_length
SY s0_z14=s0_z13+0.111111*sin075*segment_0_length
SY s0_y15=s0_y00+0.888889*cos135*segment_0_length
SY s0_z15=s0_z00+0.888889*sin135*segment_0_length
SY s1_y0=gap
SY s1_z0=sin135*segment_0_length
SY s1_y1=s1_y0+0.333333*cos045*segment_1_length
SY s1_z1=s1_z0+0.333333*sin045*segment_1_length
SY s1_y2=s1_y1+0.333333*cos345*segment_1_length
SY s1_z2=s1_z1+0.333333*sin345*segment_1_length
SY s1_y3=s1_y0+0.666667*cos045*segment_1_length
SY s1_z3=s1_z0+0.666667*sin045*segment_1_length
SY tail_y0=gap+cos045*segment_1_length
SY tail_z0=sin135*segment_0_length+sin045*segment_1_length
SY tail_y1=gap+cos045*segment_1_length+tail_length
GW      1       17      0     -s0_y00   s0_z00   0      s0_y00   s0_z00   wire_radius
GW      2       3       0      s0_y00   s0_z00   0      s0_y01   s0_z01   wire_radius
GW      3       3       0      s0_y01   s0_z01   0      s0_y02   s0_z02   wire_radius
GW      4       3       0      s0_y02   s0_z02   0      s0_y03   s0_z03   wire_radius
GW      5       3       0      s0_y03   s0_z03   0      s0_y04   s0_z04   wire_radius
GW      6       3       0      s0_y04   s0_z04   0      s0_y05   s0_z05   wire_radius
GW      7       3       0      s0_y05   s0_z05   0      s0_y06   s0_z06   wire_radius
GW      8       3       0      s0_y06   s0_z06   0      s0_y07   s0_z07   wire_radius
GW      9       3       0      s0_y07   s0_z07   0      s0_y08   s0_z08   wire_radius
GW     10       3       0      s0_y08   s0_z08   0      s0_y09   s0_z09   wire_radius
GW     11       3       0      s0_y09   s0_z09   0      s0_y10   s0_z10   wire_radius
GW     12       3       0      s0_y10   s0_z10   0      s0_y11   s0_z11   wire_radius
GW     13       3       0      s0_y11   s0_z11   0      s0_y12   s0_z12   wire_radius
GW     14       3       0      s0_y12   s0_z12   0      s0_y13   s0_z13   wire_radius
GW     15       3       0      s0_y13   s0_z13   0      s0_y14   s0_z14   wire_radius
GW     16       3       0      s0_y14   s0_z14   0      s0_y15   s0_z15   wire_radius
GW     17       3       0      s0_y15   s0_z15   0       s1_y0    s1_z0   wire_radius
GW     18       3       0       s1_y0    s1_z0   0       s1_y1    s1_z1   wire_radius
GW     19       3       0       s1_y1    s1_z1   0       s1_y2    s1_z2   wire_radius
GW     20       3       0       s1_y2    s1_z2   0       s1_y3    s1_z3   wire_radius
GW     21       3       0       s1_y3    s1_z3   0     tail_y0  tail_z0   wire_radius
GW     22       3       0     tail_y0  tail_z0   0     tail_y1  tail_z0   wire_radius
GW     23       3       0     -s0_y00   s0_z00   0     -s0_y01   s0_z01   wire_radius
GW     24       3       0     -s0_y01   s0_z01   0     -s0_y02   s0_z02   wire_radius
GW     25       3       0     -s0_y02   s0_z02   0     -s0_y03   s0_z03   wire_radius
GW     26       3       0     -s0_y03   s0_z03   0     -s0_y04   s0_z04   wire_radius
GW     27       3       0     -s0_y04   s0_z04   0     -s0_y05   s0_z05   wire_radius
GW     28       3       0     -s0_y05   s0_z05   0     -s0_y06   s0_z06   wire_radius
GW     29       3       0     -s0_y06   s0_z06   0     -s0_y07   s0_z07   wire_radius
GW     30       3       0     -s0_y07   s0_z07   0     -s0_y08   s0_z08   wire_radius
GW     31       3       0     -s0_y08   s0_z08   0     -s0_y09   s0_z09   wire_radius
GW     32       3       0     -s0_y09   s0_z09   0     -s0_y10   s0_z10   wire_radius
GW     33       3       0     -s0_y10   s0_z10   0     -s0_y11   s0_z11   wire_radius
GW     34       3       0     -s0_y11   s0_z11   0     -s0_y12   s0_z12   wire_radius
GW     35       3       0     -s0_y12   s0_z12   0     -s0_y13   s0_z13   wire_radius
GW     36       3       0     -s0_y13   s0_z13   0     -s0_y14   s0_z14   wire_radius
GW     37       3       0     -s0_y14   s0_z14   0     -s0_y15   s0_z15   wire_radius
GW     38       3       0     -s0_y15   s0_z15   0      -s1_y0    s1_z0   wire_radius
GW     39       3       0      -s1_y0    s1_z0   0      -s1_y1    s1_z1   wire_radius
GW     40       3       0      -s1_y1    s1_z1   0      -s1_y2    s1_z2   wire_radius
GW     41       3       0      -s1_y2    s1_z2   0      -s1_y3    s1_z3   wire_radius
GW     42       3       0      -s1_y3    s1_z3   0    -tail_y0  tail_z0   wire_radius
GW     43       3       0    -tail_y0  tail_z0   0    -tail_y1  tail_z0   wire_radius
GW     44       3       0     -s0_y00  -s0_z00   0     -s0_y01  -s0_z01   wire_radius
GW     45       3       0     -s0_y01  -s0_z01   0     -s0_y02  -s0_z02   wire_radius
GW     46       3       0     -s0_y02  -s0_z02   0     -s0_y03  -s0_z03   wire_radius
GW     47       3       0     -s0_y03  -s0_z03   0     -s0_y04  -s0_z04   wire_radius
GW     48       3       0     -s0_y04  -s0_z04   0     -s0_y05  -s0_z05   wire_radius
GW     49       3       0     -s0_y05  -s0_z05   0     -s0_y06  -s0_z06   wire_radius
GW     50       3       0     -s0_y06  -s0_z06   0     -s0_y07  -s0_z07   wire_radius
GW     51       3       0     -s0_y07  -s0_z07   0     -s0_y08  -s0_z08   wire_radius
GW     52       3       0     -s0_y08  -s0_z08   0     -s0_y09  -s0_z09   wire_radius
GW     53       3       0     -s0_y09  -s0_z09   0     -s0_y10  -s0_z10   wire_radius
GW     54       3       0     -s0_y10  -s0_z10   0     -s0_y11  -s0_z11   wire_radius
GW     55       3       0     -s0_y11  -s0_z11   0     -s0_y12  -s0_z12   wire_radius
GW     56       3       0     -s0_y12  -s0_z12   0     -s0_y13  -s0_z13   wire_radius
GW     57       3       0     -s0_y13  -s0_z13   0     -s0_y14  -s0_z14   wire_radius
GW     58       3       0     -s0_y14  -s0_z14   0     -s0_y15  -s0_z15   wire_radius
GW     59       3       0     -s0_y15  -s0_z15   0      -s1_y0   -s1_z0   wire_radius
GW     60       3       0      -s1_y0   -s1_z0   0      -s1_y1   -s1_z1   wire_radius
GW     61       3       0      -s1_y1   -s1_z1   0      -s1_y2   -s1_z2   wire_radius
GW     62       3       0      -s1_y2   -s1_z2   0      -s1_y3   -s1_z3   wire_radius
GW     63       3       0      -s1_y3   -s1_z3   0    -tail_y0 -tail_z0   wire_radius
GW     64       3       0    -tail_y0 -tail_z0   0    -tail_y1 -tail_z0   wire_radius
GW     65       3       0      s0_y00  -s0_z00   0      s0_y01  -s0_z01   wire_radius
GW     66       3       0      s0_y01  -s0_z01   0      s0_y02  -s0_z02   wire_radius
GW     67       3       0      s0_y02  -s0_z02   0      s0_y03  -s0_z03   wire_radius
GW     68       3       0      s0_y03  -s0_z03   0      s0_y04  -s0_z04   wire_radius
GW     69       3       0      s0_y04  -s0_z04   0      s0_y05  -s0_z05   wire_radius
GW     70       3       0      s0_y05  -s0_z05   0      s0_y06  -s0_z06   wire_radius
GW     71       3       0      s0_y06  -s0_z06   0      s0_y07  -s0_z07   wire_radius
GW     72       3       0      s0_y07  -s0_z07   0      s0_y08  -s0_z08   wire_radius
GW     73       3       0      s0_y08  -s0_z08   0      s0_y09  -s0_z09   wire_radius
GW     74       3       0      s0_y09  -s0_z09   0      s0_y10  -s0_z10   wire_radius
GW     75       3       0      s0_y10  -s0_z10   0      s0_y11  -s0_z11   wire_radius
GW     76       3       0      s0_y11  -s0_z11   0      s0_y12  -s0_z12   wire_radius
GW     77       3       0      s0_y12  -s0_z12   0      s0_y13  -s0_z13   wire_radius
GW     78       3       0      s0_y13  -s0_z13   0      s0_y14  -s0_z14   wire_radius
GW     79       3       0      s0_y14  -s0_z14   0      s0_y15  -s0_z15   wire_radius
GW     80       3       0      s0_y15  -s0_z15   0       s1_y0   -s1_z0   wire_radius
GW     81       3       0       s1_y0   -s1_z0   0       s1_y1   -s1_z1   wire_radius
GW     82       3       0       s1_y1   -s1_z1   0       s1_y2   -s1_z2   wire_radius
GW     83       3       0       s1_y2   -s1_z2   0       s1_y3   -s1_z3   wire_radius
GW     84       3       0       s1_y3   -s1_z3   0     tail_y0 -tail_z0   wire_radius
GW     85       3       0     tail_y0 -tail_z0   0     tail_y1 -tail_z0   wire_radius
GE      0
LD      5       0       0       0       58000000
GN      -1
EK
EX      0       1       9      0       1.0
FR      0       38      0       0       470     6
RP      0       1       61      1001    90      0       3       6       10000   0
EN
 

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180 Posts
An antenna design a day keeps the doctor away

No, I'm not really going to post an antenna a day, but I saw the antenna here: http://www.digitalhome.ca/forum/showthread.php?t=96171 and wanted to see what I could do with it. I parametrized it and ran it through 4nec2's optimizer for channels 14-51 and got gain between 10 and 12 and not horrible SWR. It may be interesting to test whether split reflectors and/or the unevenly spaced reflectors from the GH models would be applicable here.

Unless people complain, I'm going to continue posting parametrized NEC, but I think it would probably be good policy to only post these kinds of models here in Area 51 or possibly as example files in the modelling software thread.


Code:
CM Experimental Antenna 
CM Italian Four Diamond Antenna Design X-011
CM AWG Gauge 6 Copper Wire elements, AWG Gauge 12 reflectors
CE
SY gap=0.010639
SY vgap=0.005
SY edge0=0.122964
SY edge1=0.074191
SY wire_gauge=0.0020574
SY refl_gauge=0.001027
SY refl_z0=0.020029
SY refl_dz=0.040677
SY refl_dx=0.0784
SY refl_len=0.334487
GW	1	5	0	-gap	0	0	gap	0	wire_gauge
GW	2	17	0	gap	0	0	edge0	edge0	wire_gauge
GW	3	17	0	edge0	edge0	-vgap	0	2*edge0	wire_gauge
GW	4	9	-vgap	0	2*edge0	0	-edge1	2*edge0+edge1	wire_gauge
GW	5	9	0	-edge1	2*edge0+edge1	0	0	2*edge0+2*edge1	wire_gauge
GW	6	17	0	-gap	0	0	-edge0	edge0	wire_gauge
GW	7	17	0	-edge0	edge0	vgap	0	2*edge0	wire_gauge
GW	8	9	vgap	0	2*edge0	0	edge1	2*edge0+edge1	wire_gauge
GW	9	9	0	edge1	2*edge0+edge1	0	0	2*edge0+2*edge1	wire_gauge
GW	10	17	0	gap	0	0	edge0	-edge0	wire_gauge
GW	11	17	0	edge0	-edge0	vgap	0	-2*edge0	wire_gauge
GW	12	9	vgap	0	-2*edge0	0	-edge1	-2*edge0-edge1	wire_gauge
GW	13	9	0	-edge1	-2*edge0-edge1	0	0	-2*edge0-2*edge1	wire_gauge
GW	14	17	0	-gap	0	0	-edge0	-edge0	wire_gauge
GW	15	17	0	-edge0	-edge0	-vgap	0	-2*edge0	wire_gauge
GW	16	9	-vgap	0	-2*edge0	0	edge1	-2*edge0-edge1	wire_gauge
GW	17	9	0	edge1	-2*edge0-edge1	0	0	-2*edge0-2*edge1	wire_gauge
GW	18	34	-refl_dx	-refl_len/2	refl_z0	-refl_dx	refl_len/2	refl_z0	refl_gauge
GW	19	34	-refl_dx	-refl_len/2	refl_z0+1*refl_dz	-refl_dx	refl_len/2	refl_z0+1*refl_dz	refl_gauge
GW	20	34	-refl_dx	-refl_len/2	refl_z0+2*refl_dz	-refl_dx	refl_len/2	refl_z0+2*refl_dz	refl_gauge
GW	21	34	-refl_dx	-refl_len/2	refl_z0+3*refl_dz	-refl_dx	refl_len/2	refl_z0+3*refl_dz	refl_gauge
GW	22	34	-refl_dx	-refl_len/2	refl_z0+4*refl_dz	-refl_dx	refl_len/2	refl_z0+4*refl_dz	refl_gauge
GW	23	34	-refl_dx	-refl_len/2	refl_z0+5*refl_dz	-refl_dx	refl_len/2	refl_z0+5*refl_dz	refl_gauge
GW	24	34	-refl_dx	-refl_len/2	refl_z0+6*refl_dz	-refl_dx	refl_len/2	refl_z0+6*refl_dz	refl_gauge
GW	24	34	-refl_dx	-refl_len/2	refl_z0+7*refl_dz	-refl_dx	refl_len/2	refl_z0+7*refl_dz	refl_gauge
GW	24	34	-refl_dx	-refl_len/2	refl_z0+8*refl_dz	-refl_dx	refl_len/2	refl_z0+8*refl_dz	refl_gauge
GW	25	34	-refl_dx	-refl_len/2	-refl_z0	-refl_dx	refl_len/2	-refl_z0	refl_gauge
GW	26	34	-refl_dx	-refl_len/2	-refl_z0-1*refl_dz	-refl_dx	refl_len/2	-refl_z0-1*refl_dz	refl_gauge
GW	27	34	-refl_dx	-refl_len/2	-refl_z0-2*refl_dz	-refl_dx	refl_len/2	-refl_z0-2*refl_dz	refl_gauge
GW	28	34	-refl_dx	-refl_len/2	-refl_z0-3*refl_dz	-refl_dx	refl_len/2	-refl_z0-3*refl_dz	refl_gauge
GW	29	34	-refl_dx	-refl_len/2	-refl_z0-4*refl_dz	-refl_dx	refl_len/2	-refl_z0-4*refl_dz	refl_gauge
GW	30	34	-refl_dx	-refl_len/2	-refl_z0-5*refl_dz	-refl_dx	refl_len/2	-refl_z0-5*refl_dz	refl_gauge
GW	31	34	-refl_dx	-refl_len/2	-refl_z0-6*refl_dz	-refl_dx	refl_len/2	-refl_z0-6*refl_dz	refl_gauge
GW	24	34	-refl_dx	-refl_len/2	-refl_z0-7*refl_dz	-refl_dx	refl_len/2	-refl_z0-7*refl_dz	refl_gauge
GW	24	34	-refl_dx	-refl_len/2	-refl_z0-8*refl_dz	-refl_dx	refl_len/2	-refl_z0-8*refl_dz	refl_gauge
GE	0
LD	5	0	0	0	58000000
GN	-1
EK
EX	0	1	3	0	1.0			
FR	0	38	0	0	470	6
RP	0	1	61	1001	90	0	3	6	10000	0
EN
 

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But because of the higher SWR on the lower channels, the net gain chart wont be so flat.

Firimari, since we cant see inside of that plastic middle, I cant be positive the Fracarro P54 is as your model. When I first saw that Fracarro P54, I thought it may be a one wire design with the balun connecting in the middle at the ends of the folded single wire. Kind of like a twisted up folded dipole.
 

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X-014

I put a 20" X 36", 2 by 4 inch mesh reflector 4 inches behind the X-011 and got a little bit more gain out of the design. 13 dbi versus 12 dbi (or less for the same frequency) for the Fracarro P54.





For a 12 dbi antenna, it has a very wide beamwidth. This 3D beamwidth pattern is at 585mhz, channel 33, the middle of the new UHF band. It also appears to be a fairly forgiving design, spacing-wise. This could be a very cheap and easy antenna to build using electric fence stand-offs that are made for chain link fences. (available at Tractor Supply)




And the NEC file :

CM Experimental Antenna
CM Italian Four Diamond Antenna Design X-014
CM AWG Gauge 6 Copper Wire elements, 2 by 4 inch mesh reflector
CM Reflector to Driven Element distance - 4.0 inches
CE
GW 1 1 0 -0.4188583 0 0 0.41885827 0 0.089
GW 2 11 0 0.41885827 0 0 4.84110236 4.84110236 0.081
GW 3 11 0 4.84110236 4.84110236 -0.1968504 0 9.68220472 0.081
GW 4 7 -0.1968504 0 9.68220472 0 -2.9209055 12.6031102 0.081
GW 5 7 0 -2.9209055 12.6031102 0 0 15.5240157 0.081
GW 6 11 0 -0.4188583 0 0 -4.8411024 4.84110236 0.081
GW 7 11 0 -4.8411024 4.84110236 0.19685039 0 9.68220472 0.081
GW 8 7 0.19685039 0 9.68220472 0 2.92090551 12.6031102 0.081
GW 9 7 0 2.92090551 12.6031102 0 0 15.5240157 0.081
GW 10 11 0 0.41885827 0 0 4.84110236 -4.8411024 0.081
GW 11 11 0 4.84110236 -4.8411024 0.19685039 0 -9.6822047 0.081
GW 12 7 0.19685039 0 -9.6822047 0 -2.9209055 -12.60311 0.081
GW 13 7 0 -2.9209055 -12.60311 0 0 -15.524016 0.081
GW 14 11 0 -0.4188583 0 0 -4.8411024 -4.8411024 0.081
GW 15 11 0 -4.8411024 -4.8411024 -0.1968504 0 -9.6822047 0.081
GW 16 7 -0.1968504 0 -9.6822047 0 2.92090551 -12.60311 0.081
GW 17 7 0 2.92090551 -12.60311 0 0 -15.524016 0.081
GW 139 3 -4 -10 18 -4 -10 16 0.050949
GW 140 3 -4 -10 16 -4 -10 14 0.050949
GW 141 3 -4 -10 14 -4 -10 12 0.050949
GW 142 3 -4 -10 12 -4 -10 10 0.050949
GW 143 3 -4 -10 10 -4 -10 8 0.050949
GW 144 3 -4 -10 8 -4 -10 6 0.050949
GW 145 3 -4 -10 6 -4 -10 4 0.050949
GW 146 3 -4 -10 4 -4 -10 2 0.050949
GW 147 3 -4 -10 2 -4 -10 0 0.050949
GW 148 3 -4 -10 0 -4 -10 -2 0.050949
GW 149 3 -4 -10 -2 -4 -10 -4 0.050949
GW 150 3 -4 -10 -4 -4 -10 -6 0.050949
GW 151 3 -4 -10 -6 -4 -10 -8 0.050949
GW 152 3 -4 -10 -8 -4 -10 -10 0.050949
GW 153 3 -4 -10 -10 -4 -10 -12 0.050949
GW 154 3 -4 -10 -12 -4 -10 -14 0.050949
GW 155 3 -4 -10 -14 -4 -10 -16 0.050949
GW 157 3 -4 -6 18 -4 -6 16 0.050949
GW 158 3 -4 -6 16 -4 -6 14 0.050949
GW 159 3 -4 -6 14 -4 -6 12 0.050949
GW 160 3 -4 -6 12 -4 -6 10 0.050949
GW 161 3 -4 -6 10 -4 -6 8 0.050949
GW 162 3 -4 -6 8 -4 -6 6 0.050949
GW 163 3 -4 -6 6 -4 -6 4 0.050949
GW 164 3 -4 -6 4 -4 -6 2 0.050949
GW 165 3 -4 -6 2 -4 -6 0 0.050949
GW 166 3 -4 -6 0 -4 -6 -2 0.050949
GW 167 3 -4 -6 -2 -4 -6 -4 0.050949
GW 168 3 -4 -6 -4 -4 -6 -6 0.050949
GW 169 3 -4 -6 -6 -4 -6 -8 0.050949
GW 170 3 -4 -6 -8 -4 -6 -10 0.050949
GW 171 3 -4 -6 -10 -4 -6 -12 0.050949
GW 172 3 -4 -6 -12 -4 -6 -14 0.050949
GW 173 3 -4 -6 -14 -4 -6 -16 0.050949
GW 174 3 -4 -6 -16 -4 -6 -18 0.050949
GW 176 3 -4 -2 18 -4 -2 16 0.050949
GW 177 3 -4 -2 16 -4 -2 14 0.050949
GW 178 3 -4 -2 14 -4 -2 12 0.050949
GW 179 3 -4 -2 8 -4 -2 6 0.050949
GW 180 3 -4 -2 6 -4 -2 4 0.050949
GW 181 3 -4 -2 4 -4 -2 2 0.050949
GW 182 3 -4 -2 2 -4 -2 0 0.050949
GW 183 3 -4 -2 0 -4 -2 -2 0.050949
GW 184 3 -4 -2 -2 -4 -2 -4 0.050949
GW 185 3 -4 -2 -4 -4 -2 -6 0.050949
GW 186 3 -4 -2 -6 -4 -2 -8 0.050949
GW 187 3 -4 -2 -8 -4 -2 -10 0.050949
GW 188 3 -4 -2 -10 -4 -2 -12 0.050949
GW 189 3 -4 -2 -12 -4 -2 -14 0.050949
GW 190 3 -4 -2 -14 -4 -2 -16 0.050949
GW 191 3 -4 -2 -16 -4 -2 -18 0.050949
GW 194 3 -4 -10 -16 -4 -10 -18 0.050949
GW 196 3 -4 -2 12 -4 -2 10 0.050949
GW 197 3 -4 -2 8 -4 -2 10 0.050949
GW 201 7 -4 -2 18 -4 -6 18 0.050949
GW 202 7 -4 -6 18 -4 -10 18 0.050949
GW 206 7 -4 -2 16 -4 -6 16 0.050949
GW 207 7 -4 -6 16 -4 -10 16 0.050949
GW 209 7 -4 -2 14 -4 -6 14 0.050949
GW 210 7 -4 -6 14 -4 -10 14 0.050949
GW 215 7 -4 -2 -18 -4 -6 -18 0.050949
GW 216 7 -4 -6 -18 -4 -10 -18 0.050949
GW 218 7 -4 -2 -16 -4 -6 -16 0.050949
GW 219 7 -4 -6 -16 -4 -10 -16 0.050949
GW 221 7 -4 -2 -14 -4 -6 -14 0.050949
GW 222 7 -4 -6 -14 -4 -10 -14 0.050949
GW 224 7 -4 -2 8 -4 -6 8 0.050949
GW 225 7 -4 -6 8 -4 -10 8 0.050949
GW 227 7 -4 -2 6 -4 -6 6 0.050949
GW 228 7 -4 -6 6 -4 -10 6 0.050949
GW 230 7 -4 -2 4 -4 -6 4 0.050949
GW 231 7 -4 -6 4 -4 -10 4 0.050949
GW 233 7 -4 -2 2 -4 -6 2 0.050949
GW 234 7 -4 -6 2 -4 -10 2 0.050949
GW 236 7 -4 -2 -2 -4 -6 -2 0.050949
GW 237 7 -4 -6 -2 -4 -10 -2 0.050949
GW 239 7 -4 -2 0 -4 -6 0 0.050949
GW 240 7 -4 -6 0 -4 -10 0 0.050949
GW 242 7 -4 -2 -4 -4 -6 -4 0.050949
GW 243 7 -4 -6 -4 -4 -10 -4 0.050949
GW 245 7 -4 -2 -6 -4 -6 -6 0.050949
GW 246 7 -4 -6 -6 -4 -10 -6 0.050949
GW 248 7 -4 -2 -8 -4 -6 -8 0.050949
GW 249 7 -4 -6 -8 -4 -10 -8 0.050949
GW 251 7 -4 -2 -10 -4 -6 -10 0.050949
GW 252 7 -4 -6 -10 -4 -10 -10 0.050949
GW 254 7 -4 -2 -12 -4 -6 -12 0.050949
GW 255 7 -4 -6 -12 -4 -10 -12 0.050949
GW 257 7 -4 -2 12 -4 -6 12 0.050949
GW 258 7 -4 -6 12 -4 -10 12 0.050949
GW 260 7 -4 -2 10 -4 -6 10 0.050949
GW 261 7 -4 -6 10 -4 -10 10 0.050949
GW 265 3 -4 2 18 -4 2 16 0.050949
GW 266 3 -4 2 16 -4 2 14 0.050949
GW 267 3 -4 2 14 -4 2 12 0.050949
GW 268 3 -4 2 12 -4 2 10 0.050949
GW 269 3 -4 2 10 -4 2 8 0.050949
GW 270 3 -4 2 8 -4 2 6 0.050949
GW 271 3 -4 2 6 -4 2 4 0.050949
GW 272 3 -4 2 4 -4 2 2 0.050949
GW 273 3 -4 2 2 -4 2 -2.185e-15 0.050949
GW 274 3 -4 2 -2.185e-15 -4 2 -2 0.050949
GW 275 3 -4 2 -2 -4 2 -4 0.050949
GW 276 3 -4 2 -4 -4 2 -6 0.050949
GW 277 3 -4 2 -6 -4 2 -8 0.050949
GW 278 3 -4 2 -8 -4 2 -10 0.050949
GW 279 3 -4 2 -10 -4 2 -12 0.050949
GW 280 3 -4 2 -12 -4 2 -14 0.050949
GW 281 3 -4 2 -14 -4 2 -16 0.050949
GW 282 3 -4 2 -16 -4 2 -18 0.050949
GW 285 3 -4 6 18 -4 6 16 0.050949
GW 286 3 -4 6 16 -4 6 14 0.050949
GW 287 3 -4 6 14 -4 6 12 0.050949
GW 288 3 -4 6 12 -4 6 10 0.050949
GW 289 3 -4 6 10 -4 6 8 0.050949
GW 290 3 -4 6 8 -4 6 6 0.050949
GW 291 3 -4 6 6 -4 6 4 0.050949
GW 292 3 -4 6 4 -4 6 2 0.050949
GW 293 3 -4 6 2 -4 6 -2.185e-15 0.050949
GW 294 3 -4 6 -2.185e-15 -4 6 -2 0.050949
GW 295 3 -4 6 -2 -4 6 -4 0.050949
GW 296 3 -4 6 -4 -4 6 -6 0.050949
GW 297 3 -4 6 -6 -4 6 -8 0.050949
GW 298 3 -4 6 -8 -4 6 -10 0.050949
GW 299 3 -4 6 -10 -4 6 -12 0.050949
GW 300 3 -4 6 -12 -4 6 -14 0.050949
GW 301 3 -4 6 -14 -4 6 -16 0.050949
GW 303 3 -4 10 18 -4 10 16 0.050949
GW 304 3 -4 10 16 -4 10 14 0.050949
GW 305 3 -4 10 14 -4 10 12 0.050949
GW 306 3 -4 10 12 -4 10 10 0.050949
GW 307 3 -4 10 10 -4 10 8 0.050949
GW 308 3 -4 10 8 -4 10 6 0.050949
GW 309 3 -4 10 6 -4 10 4 0.050949
GW 310 3 -4 10 4 -4 10 2 0.050949
GW 311 3 -4 10 2 -4 10 -2.185e-15 0.050949
GW 312 3 -4 10 -2.185e-15 -4 10 -2 0.050949
GW 313 3 -4 10 -2 -4 10 -4 0.050949
GW 314 3 -4 10 -4 -4 10 -6 0.050949
GW 315 3 -4 10 -6 -4 10 -8 0.050949
GW 316 3 -4 10 -8 -4 10 -10 0.050949
GW 317 3 -4 10 -10 -4 10 -12 0.050949
GW 318 3 -4 10 -12 -4 10 -14 0.050949
GW 319 3 -4 10 -14 -4 10 -16 0.050949
GW 320 3 -4 10 -16 -4 10 -18 0.050949
GW 340 3 -4 6 -16 -4 6 -18 0.050949
GW 348 7 -4 10 18 -4 6 18 0.050949
GW 349 7 -4 6 18 -4 2 18 0.050949
GW 351 7 -4 10 16 -4 6 16 0.050949
GW 352 7 -4 6 16 -4 2 16 0.050949
GW 354 7 -4 10 14 -4 6 14 0.050949
GW 355 7 -4 6 14 -4 2 14 0.050949
GW 360 7 -4 10 -18 -4 6 -18 0.050949
GW 361 7 -4 6 -18 -4 2 -18 0.050949
GW 363 7 -4 10 -16 -4 6 -16 0.050949
GW 364 7 -4 6 -16 -4 2 -16 0.050949
GW 366 7 -4 10 -14 -4 6 -14 0.050949
GW 367 7 -4 6 -14 -4 2 -14 0.050949
GW 369 7 -4 10 8 -4 6 8 0.050949
GW 370 7 -4 6 8 -4 2 8 0.050949
GW 372 7 -4 10 6 -4 6 6 0.050949
GW 373 7 -4 6 6 -4 2 6 0.050949
GW 375 7 -4 10 4 -4 6 4 0.050949
GW 376 7 -4 6 4 -4 2 4 0.050949
GW 378 7 -4 10 2 -4 6 2 0.050949
GW 379 7 -4 6 2 -4 2 2 0.050949
GW 381 7 -4 10 -2 -4 6 -2 0.050949
GW 382 7 -4 6 -2 -4 2 -2 0.050949
GW 384 7 -4 10 -2.185e-15 -4 6 -2.185e-15 0.050949
GW 385 7 -4 6 -2.185e-15 -4 2 -2.185e-15 0.050949
GW 387 7 -4 10 -4 -4 6 -4 0.050949
GW 388 7 -4 6 -4 -4 2 -4 0.050949
GW 390 7 -4 10 -6 -4 6 -6 0.050949
GW 391 7 -4 6 -6 -4 2 -6 0.050949
GW 393 7 -4 10 -8 -4 6 -8 0.050949
GW 394 7 -4 6 -8 -4 2 -8 0.050949
GW 396 7 -4 10 -10 -4 6 -10 0.050949
GW 397 7 -4 6 -10 -4 2 -10 0.050949
GW 399 7 -4 10 -12 -4 6 -12 0.050949
GW 400 7 -4 6 -12 -4 2 -12 0.050949
GW 402 7 -4 10 12 -4 6 12 0.050949
GW 403 7 -4 6 12 -4 2 12 0.050949
GW 405 7 -4 10 10 -4 6 10 0.050949
GW 406 7 -4 6 10 -4 2 10 0.050949
GW 429 7 -4 -2 -18 -4 2 -18 0.050949
GW 430 7 -4 -2 -16 -4 2 -16 0.050949
GW 431 7 -4 -2 -14 -4 2 -14 0.050949
GW 432 7 -4 -2 -12 -4 2 -12 0.050949
GW 433 7 -4 -2 -10 -4 2 -10 0.050949
GW 434 7 -4 -2 -8 -4 2 -8 0.050949
GW 435 7 -4 -2 -6 -4 2 -6 0.050949
GW 436 7 -4 -2 -4 -4 2 -4 0.050949
GW 437 7 -4 -2 -2 -4 2 -2 0.050949
GW 438 7 -4 -2 0 -4 2 -2.185e-15 0.050949
GW 439 7 -4 -2 2 -4 2 2 0.050949
GW 440 7 -4 -2 4 -4 2 4 0.050949
GW 441 7 -4 -2 6 -4 2 6 0.050949
GW 442 7 -4 -2 8 -4 2 8 0.050949
GW 443 7 -4 -2 10 -4 2 10 0.050949
GW 444 7 -4 -2 12 -4 2 12 0.050949
GW 445 7 -4 -2 14 -4 2 14 0.050949
GW 446 7 -4 -2 16 -4 2 16 0.050949
GW 447 7 -4 -2 18 -4 2 18 0.050949
GS 0 0 0.0254 ' All in in.
GE 0
EK
LD 5 0 0 0 5.8e7 0
EX 0 1 1 0 1 0
GN -1
FR 0 38 0 0 470 6
RP 0 1 61 1001 90 0 3 6 10000 0
EN

On another note, I suppose it was inevitable, a rock group called Antennas, heh : http://profile.myspace.com/index.cfm?fuseaction=user.viewprofile&friendid=54660168
 

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Kind of like a twisted up folded dipole.
Thinking some more about it, the above models are like twisted loops, which kind of explains the wide beamwidth pattern for its gain. I googled, but couldnt find a radiation pattern for the Fracarro P54. Im not sure if Fracarro is the manufacturer or just a distributor, but they do have interesting designs in their catalog, pretty much all of mlords Italy pictures.
 

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Unless people complain, I'm going to continue posting parametrized NEC
Please continue firimari, I am getting a lot of ideas from your approach. Just did my first parametized antenna (or at least my version of it) last night. Still have figure out how to use the optimizer.
 

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That's respectably flat gain and SWR on the X-011
Any idea what is a typical bandwidth is that one could realisticly expect to get in this regard? I am currently trying to cover both the FM Radio and VUHF-LO bands (54 Mhz to 108Mhz) with a single reflectorless hentenna based design, not having much success - VUHF LO alone or FM Radio alone appears to be more possible with a few added ons
 

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Sorry I haven't posted much. This is what I was working on before the NAROD development and I have been doing a bit of fly fishing. I was playing with the reflector lengths and was trying to dial it in for just the few channels I wanted for my area here. Now I am trying the NAROD system of elements with it, but for the sake of simplicity, I may just build as is from my 217 zigzag series. My favs are still the 179 zigzag series, but this 217 seemed to work for me. I believe I could have benefited figuring out the optimizer. I think the NORAD’s are pure genius. Perhaps you could link me to the use of the optimizer? Thanks again gentlemen, will post later.

CM
CE
GW 1 3 0 -0.0475 -0.05 0 0 -0.05 3.3e-3
GW 5 10 0 0.1771921 -0.3526735 0 0.2626921 -0.3526735 3.5e-3
GW 6 9 0 0.02375 -0.813 0 0.17719215 -0.9664422 3.5e-3
GW 7 9 0 0.17719215 -0.9664422 0 0.02374994 -1.1198843 3.5e-3
GW 8 9 0 0.02374994 -1.1198843 0 0.17719208 -1.2733265 3.5e-3
GW 9 10 0 0.17719208 -1.2733265 0 0.26269208 -1.2733265 3.5e-3
GW 13 10 0 -0.2246922 -0.3526735 0 -0.3101922 -0.3526735 3.5e-3
GW 14 9 0 -0.07125 -0.813 0 -0.2246922 -0.9664422 3.5e-3
GW 15 9 0 -0.2246922 -0.9664422 0 -0.07125 -1.1198843 3.5e-3
GW 16 9 0 -0.07125 -1.1198843 0 -0.2246922 -1.2733264 3.5e-3
GW 17 10 0 -0.2246922 -1.2733264 0 -0.3101922 -1.2733264 3.5e-3
GW 92 9 0 -0.2246922 -0.3526735 0 -0.0712501 -0.5061157 3.5e-3
GW 93 9 0 -0.0712501 -0.5061157 0 -0.2246922 -0.6595579 3.5e-3
GW 94 9 0 -0.2246922 -0.6595579 0 -0.07125 -0.813 3.5e-3
GW 95 9 0 0.17719215 -0.6595578 0 0.02375 -0.813 3.5e-3
GW 96 9 0 0.02374995 -0.5061157 0 0.17719215 -0.6595578 3.5e-3
GW 97 9 0 0.1771921 -0.3526735 0 0.02374995 -0.5061157 3.5e-3
GW 112 18 -0.0855 0.35825 -0.1050892 -0.0855 1.25e-3 -0.1050892 3.5e-3
GW 113 15 -0.0855 -0.40575 -0.1050892 -0.0855 -0.04875 -0.1050892 3.5e-3
GW 114 18 -0.0855 0.35825 -0.4190446 -0.0855 1.25e-3 -0.4190446 3.5e-3
GW 115 15 -0.0855 -0.40575 -0.4190446 -0.0855 -0.04875 -0.4190446 3.5e-3
GW 116 18 -0.0855 0.35825 -0.733 -0.0855 1.25e-3 -0.733 3.5e-3
GW 117 15 -0.0855 -0.40575 -0.733 -0.0855 -0.04875 -0.733 3.5e-3
GW 122 15 -0.0855 0.36825 -0.2620669 -0.0855 1.25e-3 -0.2620669 3.5e-3
GW 123 15 -0.0855 -0.04875 -0.2620669 -0.0855 -0.41575 -0.2620669 3.5e-3
GW 124 15 -0.0855 0.36825 -0.5760223 -0.0855 1.25e-3 -0.5760223 3.5e-3
GW 125 15 -0.0855 -0.04875 -0.5760223 -0.0855 -0.41575 -0.5760223 3.5e-3
GW 128 18 -0.0855 -0.40525 -1.2069554 -0.0855 -0.04825 -1.2069554 3.5e-3
GW 129 15 -0.0855 0.35875 -1.2069554 -0.0855 1.75e-3 -1.2069554 3.5e-3
GW 130 18 -0.0855 -0.40525 -0.893 -0.0855 -0.04825 -0.893 3.5e-3
GW 131 15 -0.0855 0.35875 -0.893 -0.0855 1.75e-3 -0.893 3.5e-3
GW 134 15 -0.0855 -0.41525 -1.0499777 -0.0855 -0.04825 -1.0499777 3.5e-3
GW 135 15 -0.0855 1.75e-3 -1.0499777 -0.0855 0.36875 -1.0499777 3.5e-3
GW 136 1 0 -0.07125 -0.813 0 -0.0475 -0.813 3.5e-3
GW 137 58 0 -0.0475 -0.813 0 -0.0475 -0.05 3.5e-3
GW 139 2 0 0 -0.813 0 0.02375 -0.813 3.5e-3
GW 140 58 0 0 -0.813 0 0 -0.05 3.5e-3
GW 141 10 0 -0.2246922 0.25267355 0 -0.3101922 0.25267355 3.5e-3
GW 142 9 0 -0.07125 0.713 0 -0.2246922 0.86644217 3.5e-3
GW 143 9 0 -0.2246922 0.86644217 0 -0.0712499 1.01988429 3.5e-3
GW 144 9 0 -0.0712499 1.01988429 0 -0.2246921 1.17332651 3.5e-3
GW 145 10 0 -0.2246921 1.17332651 0 -0.3101921 1.17332651 3.5e-3
GW 146 10 0 0.17719218 0.25267349 0 0.26269218 0.25267349 3.5e-3
GW 147 9 0 0.02375 0.713 0 0.17719217 0.86644217 3.5e-3
GW 148 9 0 0.17719217 0.86644217 0 0.02374995 1.01988429 3.5e-3
GW 149 9 0 0.02374995 1.01988429 0 0.17719217 1.17332641 3.5e-3
GW 150 10 0 0.17719217 1.17332641 0 0.26269217 1.17332641 3.5e-3
GW 151 9 0 0.17719218 0.25267349 0 0.02375003 0.40611568 3.5e-3
GW 152 9 0 0.02375003 0.40611568 0 0.1771922 0.55955785 3.5e-3
GW 153 9 0 0.1771922 0.55955785 0 0.02375 0.713 3.5e-3
GW 154 9 0 -0.2246922 0.55955785 0 -0.07125 0.713 3.5e-3
GW 155 9 0 -0.07125 0.4061157 0 -0.2246922 0.55955785 3.5e-3
GW 156 9 0 -0.2246922 0.25267355 0 -0.07125 0.4061157 3.5e-3
GW 157 18 -0.0855 -0.40575 5.0892e-3 -0.0855 -0.04875 5.0892e-3 3.5e-3
GW 158 15 -0.0855 0.35825 5.0892e-3 -0.0855 1.25e-3 5.0892e-3 3.5e-3
GW 159 18 -0.0855 -0.40575 0.3190446 -0.0855 -0.04875 0.3190446 3.5e-3
GW 160 15 -0.0855 0.35825 0.3190446 -0.0855 1.25e-3 0.3190446 3.5e-3
GW 161 18 -0.0855 -0.40575 0.633 -0.0855 -0.04875 0.633 3.5e-3
GW 162 15 -0.0855 0.35825 0.633 -0.0855 1.25e-3 0.633 3.5e-3
GW 163 15 -0.0855 -0.41575 0.1620669 -0.0855 -0.04875 0.1620669 3.5e-3
GW 164 15 -0.0855 1.25e-3 0.1620669 -0.0855 0.36825 0.1620669 3.5e-3
GW 165 15 -0.0855 -0.41575 0.4760223 -0.0855 -0.04875 0.4760223 3.5e-3
GW 166 15 -0.0855 1.25e-3 0.4760223 -0.0855 0.36825 0.4760223 3.5e-3
GW 169 18 -0.0855 0.35775 1.1069554 -0.0855 7.5e-4 1.1069554 3.5e-3
GW 170 15 -0.0855 -0.40625 1.1069554 -0.0855 -0.04925 1.1069554 3.5e-3
GW 171 18 -0.0855 0.35775 0.793 -0.0855 7.5e-4 0.793 3.5e-3
GW 172 15 -0.0855 -0.40625 0.793 -0.0855 -0.04925 0.793 3.5e-3
GW 175 15 -0.0855 0.36775 0.9499777 -0.0855 7.5e-4 0.9499777 3.5e-3
GW 176 15 -0.0855 -0.04925 0.9499777 -0.0855 -0.41625 0.9499777 3.5e-3
GW 177 1 0 0.02375 0.713 0 0 0.713 3.5e-3
GW 178 58 0 0 0.713 0 0 -0.05 3.5e-3
GW 179 2 0 -0.0475 0.713 0 -0.07125 0.713 3.5e-3
GW 180 58 0 -0.0475 0.713 0 -0.0475 -0.05 3.5e-3
GW 188 13 -0.0855 0.311 1.18349 -0.0855 2.e-3 1.18349 3.5e-3
GW 189 13 -0.0855 -0.357 1.18349 -0.0855 -0.048 1.18349 3.5e-3
GW 190 13 -0.0855 0.309 0.87 -0.0855 0 0.87 3.5e-3
GW 191 13 -0.0855 -0.359 0.87 -0.0855 -0.05 0.87 3.5e-3
GW 194 13 -0.0855 0.309 0.55751115 -0.0855 0 0.55751115 3.5e-3
GW 195 13 -0.0855 -0.359 0.55751115 -0.0855 -0.05 0.55751115 3.5e-3
GW 198 13 -0.0855 0.308 0.24251115 -0.0855 -1.e-3 0.24251115 3.5e-3
GW 199 13 -0.0855 -0.36 0.24251115 -0.0855 -0.051 0.24251115 3.5e-3
GW 200 13 -0.0855 0.31 -0.341 -0.0855 1.e-3 -0.341 3.5e-3
GW 201 13 -0.0855 -0.358 -0.341 -0.0855 -0.049 -0.341 3.5e-3
GW 204 13 -0.0855 0.309 -0.656 -0.0855 0 -0.656 3.5e-3
GW 205 13 -0.0855 -0.359 -0.656 -0.0855 -0.05 -0.656 3.5e-3
GW 208 13 -0.0855 0.309 -0.9684889 -0.0855 0 -0.9684889 3.5e-3
GW 209 13 -0.0855 -0.359 -0.9684889 -0.0855 -0.05 -0.9684889 3.5e-3
GW 212 13 -0.0855 0.308 -1.2834889 -0.0855 -1.e-3 -1.2834889 3.5e-3
GW 213 13 -0.0855 -0.36 -1.2834889 -0.0855 -0.051 -1.2834889 3.5e-3
GW 214 26 -0.0855 0.413 1.028 -0.0855 2.e-3 1.028 3.5e-3
GW 215 26 -0.0855 -0.459 1.028 -0.0855 -0.048 1.028 3.5e-3
GW 216 26 -0.0855 0.412 0.40051115 -0.0855 1.e-3 0.40051115 3.5e-3
GW 217 26 -0.0855 -0.46 0.40051115 -0.0855 -0.049 0.40051115 3.5e-3
GW 218 26 -0.0855 0.411 0.08551115 -0.0855 0 0.08551115 3.5e-3
GW 219 26 -0.0855 -0.461 0.08551115 -0.0855 -0.05 0.08551115 3.5e-3
GW 220 26 -0.0855 0.412 0.713 -0.0855 1.e-3 0.713 3.5e-3
GW 221 26 -0.0855 -0.46 0.713 -0.0855 -0.049 0.713 3.5e-3
GW 222 26 -0.0855 0.415 -0.184 -0.0855 4.e-3 -0.184 3.5e-3
GW 223 26 -0.0855 -0.457 -0.184 -0.0855 -0.046 -0.184 3.5e-3
GW 224 26 -0.0855 0.414 -0.499 -0.0855 3.e-3 -0.499 3.5e-3
GW 225 26 -0.0855 -0.458 -0.499 -0.0855 -0.047 -0.499 3.5e-3
GW 226 26 -0.0855 0.413 -1.1264889 -0.0855 2.e-3 -1.1264889 3.5e-3
GW 227 26 -0.0855 -0.459 -1.1264889 -0.0855 -0.048 -1.1264889 3.5e-3
GW 230 26 -0.0855 0.413 -0.814 -0.0855 2.e-3 -0.814 3.5e-3
GW 231 26 -0.0855 -0.459 -0.814 -0.0855 -0.048 -0.814 3.5e-3
GE 0
LD 5 0 0 0 24900000
GN -1
EK
EX 0 1 2 0 1 0
FR 0 0 0 0 585 0
EN
 

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I am currently trying to cover both the FM Radio and VUHF-LO bands (54 Mhz to 108Mhz) with a single reflectorless hentenna based design, not having much success - VUHF LO alone or FM Radio alone appears to be more possible with a few added ons
A huge bowtie, ie 3 to 4 foot legs, that used to be very common when I was a kid should do you nicely if you dont want anything too fancy. Bowties have very wide bandwidths.
 
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