***** YAGI ANTENNA DESIGN DETAILS *****

      DESIGN FREQUENCY                2441.75   Mhz

      LAMBDA (Wavelength)              122.78   mm      =   4.834ins

      GAIN (With -15 db side lobes)     11.77   DBD

      NUMBER OF ELEMENTS                10

      DIAMETER OF ELEMENTS               2.00   mm      =   0.079 ins

      DIAMETER OF BOOM  (O.D.)           5.00   mm      =   0.197 ins

      BOOM LENGTH                      263.11   mm      =  10.359 ins

      BOOM WAVELENGTHS                   2.14

      BOOM CORRECTION FACTOR             3.31   mm      =   0.131 ins

      TYPICAL BANDWIDTH                 34.18   Mhz

      HORIZONTAL BEAM WIDTH             33      degrees

      VERTICAL BEAM WIDTH               38      degrees

      HORIZONTAL STACKING DISTANCE     189.75   mm      =   7.470 ins

      VERTICAL STACKING DISTANCE       164.78   mm      =   6.487 ins

      DIMENSIONAL TOLERANCE (+/-)        0.37   mm      =   0.014 ins

                *** Elements are NOT INSULATED from the boom ***

                       ***** ELEMENT LENGTH *****

                                  mm                      ins

   REFLECTOR                    63.48                    2.499

   FOLDED DIPOLE                58.07                    2.286

   DIRECTOR #  1                54.77                    2.156

   DIRECTOR #  2                53.87                    2.121

   DIRECTOR #  3                52.75                    2.077

   DIRECTOR #  4                51.86                    2.042

   DIRECTOR #  5                51.42                    2.024

   DIRECTOR #  6                50.98                    2.007

   DIRECTOR #  7                50.54                    1.990

   DIRECTOR #  8                50.54                    1.990

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               ***** ELEMENT SPACING  (center to center) *****

                                              mm            ins

   REFLECTOR      to    FOLDED DIPOLE       22.71          0.894

   FOLDED DIPOLE  to    DIR 1                9.70          0.382

   DIR 1          to    DIR 2               22.10          0.870

   DIR 2          to    DIR 3               26.52          1.044

   DIR 3          to    DIR 4               30.94          1.218

   DIR 4          to    DIR 5               34.50          1.358

   DIR 5          to    DIR 6               37.08          1.460

   DIR 6          to    DIR 7               38.92          1.532

   DIR 7          to    DIR 8               40.64          1.600

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      ***** PROGRESSIVE SPACING (from reflector end of the boom)*****

                                             mm                ins

   BOOM TO REFLECTOR                       13.00               0.512

   TO FOLDED DIPOLE                        35.71               1.406

   TO ELEMENT 3    (director 1 )           45.41               1.788

   TO ELEMENT 4    (director 2 )           67.51               2.658

   TO ELEMENT 5    (director 3 )           94.03               3.702

   TO ELEMENT 6    (director 4 )          124.97               4.920

   TO ELEMENT 7    (director 5 )          159.47               6.278

   TO ELEMENT 8    (director 6 )          196.55               7.738

   TO ELEMENT 9    (director 7 )          235.47               9.271

   TO ELEMENT 10   (director 8 )          276.11              10.871

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              ***** BOOM LENGTH REQUIRED FOR FABRICATION *****

                        289.11 mm   =     11.382 ins