MultiNEC 1.85 ft in SLT30 *** DO NOT MAKE MANUAL EDITS TO THIS FILE *** _ then select Meters / millimeters. _0.604 "_Broadside spacing, wavelengths" "_(wavelengths at design frequency ""T"")" "_For Info Only. Change ""B"" or ""T"" to see new results." _292.5 _Element 1 azimuth position "_=ROUND(2 * Wires!$B$14, 1)" "_=""Circle diameter, "" & LOWER(UnitsXYZLong)" _Use 292.5 (or -67.5) for main lobe on +X axis "_=ROUND(2 * Wires!$B$16 / U, 3)" "_=""Element-to-element spacing, wavelengths (at "" & T & "" MHz)""" _Use 22.5 for main lobe on +Y axis "_=ROUND(Wires!$B$14 / U, 3)" "_=""Circle radius, wavelengths (at "" & T & "" MHz)""" _74.21 "_Series resistance, ohms" "_With a single stand-alone element, the ""Resonate"" button was used" _106.2152 "_Series inductance, uH" "_to set variable ""L"". Then variable ""K"" was set to make the feedpoint" _impedance exactly 75+j0 ohms. _125 "_Phase delay, degrees" "_(degrees at design frequency ""T"")" _1.85 "_Design frequency, MHz" _=299.792458 / UnitsFact / T "_<<< Calculated, do not modify" "_=""(1 wavelength in "" & LOWER(UnitsXYZLong) & "" at design frequency """"T"""")""" _24 _Segments in each wire _To work in Meters rather than Feet: _FALSE "_Single element? (True = 1 element, False = 8 elements)" "_Click ""Change Units"", choose the first option," _W8JI 8 Circle with AL-24 elements "_Basic Al-24 element, centered at 0,0,0" _m _0 _0 _0 _0 _0 _23.25 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_Basic element moved out along the X axis to give ""B"" broadside spacing in wavelengths at ""T"" MHz" _rz _=$B$12 + B / 2 * U / COS(RADIANS(22.5)) _=$C$12 _=$D$12 _=$E$12 + B / 2 * U / COS(RADIANS(22.5)) _=$F$12 _=$G$12 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_Element 1, basic element rotated by ""G"" degrees about the Z axis to give desired array direction" "_=ROUND($B$14 * COS(RADIANS(G)) - $C$14 * SIN(RADIANS(G)), 9)" "_=ROUND($B$14 * SIN(RADIANS(G)) + $C$14 * COS(RADIANS(G)), 9)" _=$D$14 "_=ROUND($E$14 * COS(RADIANS(G)) - $F$14 * SIN(RADIANS(G)), 9)" "_=ROUND($E$14 * SIN(RADIANS(G)) + $F$14 * COS(RADIANS(G)), 9)" _=$G$14 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_Elements 2-8, copy of previous element rotated 45 deg CW" "_=IF(Z, ""X"", """")" "_=ROUND($B$16 * COS(RADIANS(-45)) - $C$16 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$16 * SIN(RADIANS(-45)) + $C$16 * COS(RADIANS(-45)), 9)" _=$D$16 "_=ROUND($E$16 * COS(RADIANS(-45)) - $F$16 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$16 * SIN(RADIANS(-45)) + $F$16 * COS(RADIANS(-45)), 9)" _=$G$16 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_=ROUND($B$18 * COS(RADIANS(-45)) - $C$18 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$18 * SIN(RADIANS(-45)) + $C$18 * COS(RADIANS(-45)), 9)" _=$D$18 "_=ROUND($E$18 * COS(RADIANS(-45)) - $F$18 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$18 * SIN(RADIANS(-45)) + $F$18 * COS(RADIANS(-45)), 9)" _=$G$18 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_=ROUND($B$19 * COS(RADIANS(-45)) - $C$19 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$19 * SIN(RADIANS(-45)) + $C$19 * COS(RADIANS(-45)), 9)" _=$D$19 "_=ROUND($E$19 * COS(RADIANS(-45)) - $F$19 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$19 * SIN(RADIANS(-45)) + $F$19 * COS(RADIANS(-45)), 9)" _=$G$19 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_=ROUND($B$20 * COS(RADIANS(-45)) - $C$20 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$20 * SIN(RADIANS(-45)) + $C$20 * COS(RADIANS(-45)), 9)" _=$D$20 "_=ROUND($E$20 * COS(RADIANS(-45)) - $F$20 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$20 * SIN(RADIANS(-45)) + $F$20 * COS(RADIANS(-45)), 9)" _=$G$20 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_=ROUND($B$21 * COS(RADIANS(-45)) - $C$21 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$21 * SIN(RADIANS(-45)) + $C$21 * COS(RADIANS(-45)), 9)" _=$D$21 "_=ROUND($E$21 * COS(RADIANS(-45)) - $F$21 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$21 * SIN(RADIANS(-45)) + $F$21 * COS(RADIANS(-45)), 9)" _=$G$21 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_=ROUND($B$22 * COS(RADIANS(-45)) - $C$22 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$22 * SIN(RADIANS(-45)) + $C$22 * COS(RADIANS(-45)), 9)" _=$D$22 "_=ROUND($E$22 * COS(RADIANS(-45)) - $F$22 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$22 * SIN(RADIANS(-45)) + $F$22 * COS(RADIANS(-45)), 9)" _=$G$22 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_=IF(Z, ""X"", """")" "_=ROUND($B$23 * COS(RADIANS(-45)) - $C$23 * SIN(RADIANS(-45)), 9)" "_=ROUND($B$23 * SIN(RADIANS(-45)) + $C$23 * COS(RADIANS(-45)), 9)" _=$D$23 "_=ROUND($E$23 * COS(RADIANS(-45)) - $F$23 * SIN(RADIANS(-45)), 9)" "_=ROUND($E$23 * SIN(RADIANS(-45)) + $F$23 * COS(RADIANS(-45)), 9)" _=$G$23 "_=IF(UnitsDia=""in"", 0.71, 18)" _=X "_The Hi-Z AL-24 element has 4 sections with diameters of 0.875, 0.750, 0.625, and 0.500 inches." _Using an equivalent diameter of 0.710 inches (18 millimeters) gives the best correlation between _NEC-2 with constant diameter and NEC-4 with stepped diameters. _1 _0 _1 _=-P * Freq / T _I _2 _0 _1 _0 _I "_=IF(Z, ""X"", """")" _3 _0 _0 _0 _I "_=IF(Z, ""X"", """")" _4 _0 _0 _0 _I "_=IF(Z, ""X"", """")" _5 _0 _1 _0 _I "_=IF(Z, ""X"", """")" _6 _0 _1 _=-P * Freq / T _I "_=IF(Z, ""X"", """")" _7 _0 _0 _0 _I "_=IF(Z, ""X"", """")" _8 _0 _0 _0 _I "_=IF(Z, ""X"", """")" "_Phase is set via variable ""P"". Changes with test case frequency." _Note that a 0 amplitude current source is equivalent to putting "_a small gap at the feedpoint. See ""Using The Sources Window""" _in the EZNEC Help. _1 _0 _=K _=L _Ser _Ser _2 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" _3 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" _4 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" _5 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" _6 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" _7 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" _8 _0 _=K _=L _Ser _Ser "_=IF(Z, ""X"", """")" "_Resistance and inductance values are set via variables ""K"" and ""L""." Controls FALSE TRUE 4 4 2 1 0 1 75 0 20 FALSE TRUE _1 _0 _Freq (MHz) _B _P _1.85 _0.604 _80 _1.85 _0.604 _85 _1.85 _0.604 _90 _1.85 _0.604 _95 _1.85 _0.604 _100 _1.85 _0.604 _105 _1.85 _0.604 _110 _1.85 _0.604 _115 _1.85 _0.604 _120 _1.85 _0.604 _125 _1.85 _0.604 _130 _1.85 _0.604 _135 _1.85 _0.604 _140 14