Design Synopsys
144 MHz, 12 Elements, 12.5 dBd Estimated Gain
34 Degrees Horizontal Beam Width
37 Degrees Vertical Beam Width
1.25" Diameter, Metalic Boom with Insulated Elements.
Electrical Boom Length of 5204.7 mm (204.9"). Allow for overhang when cutting boom to length.
6.35 mm (00.25") Driven Element Diameter.
6.35 mm (00.25") Parasitic Element Diameter.
Suggested Stacking Distance for 2 Yagis:
3352.8 mm (11' 0") Vertically
3048.0 mm (10' 0") Vertically
6.2 mm (1/4") Dimensional tolerance required for element lengths.
Antenna Dimensions
Cumulative
Spacing
| Element
| Element
Length
|
(mm)
| (in)
|
|
| (mm)
| (in)
|
0
| 0"
| REFL
| 
| 1044
| 41-1/8"
|
312
| 12-5/16"
| D.E.
| 
| 955
| 37-5/8"
|
447
| 17-5/8"
| D1
| 
| 962
| 37-7/8"
|
699
| 27-1/2"
| D2
|
| 938
| 36-15/16"
|
1050
| 41-5/16"
| D3
|
| 922
| 36-5/16"
|
1482
| 58-3/8"
| D4
|
| 912
| 35-7/8"
|
1986
| 78-3/16"
| D5
|
| 904
| 35-9/16"
|
2553
| 100-1/2"
| D6
|
| 898
| 35-3/8"
|
3168
| 124-3/4"
| D7
|
| 894
| 35-3/16"
|
3831
| 150-13/16"
| D8
|
| 889
| 35"
|
4527
| 178-1/4"
| D9
|
| 885
| 34-13/16"
|
5259
| 207-1/16"
| D10
|
| 882
| 34-3/4"
|
