Pull down the File menu and print
Specifications and FAQ's
Lengths of wire elements and spacing
Note that driven element consists of two 1/2 sections and
reflector consists of one section

Units are Inches, wire is 16 Ga (0.051 in. dia.)
Conversion Table for Different
Wire Thickness
These factors can be used to calculate new
wire lengths if wire that is not 16 gauge is
used
Conversion table for driver wires only; use 16 ga.    
              table for reflector wires.

Wire Dia. (In.)   Wire Gauge    Multiply lengths by

dddd0.032                20                        0.996

dddd0.040                18                        0.998

dddd0.051                16                        1.000

dddd0.064                14                        1.002

ddd  0.081                12                        1.004

dddd0.102                10                        1.006
ddddd G3TXQ Broad Band Hex Beam Spec.
                                                                         
  Ht. of wires
dddddddDesignd1/2 Driver   Full Reflector   Tip     above the
ddBand   Freq.   wire length    wire length  Space   Base plate
ddd20    14.150     218.0            412.0          24.0        42
ddd17    18.100     169.5            321.0          18.5        20
ddd15    21.250     144.5            274.4          16.0        14
ddd12    24.950     121.7            232.0          13.5        10
ddd10    28.400     106.8            204.4          12.0          6