Design principles 5-El.-2-m-OWM-Yagi 8-El.-2-m-OWM-Yagi 8-El.-2-m-OWL-Yagi 11-El.-2-m-OWL-Yagi 14-El.-2-m-OWL-Yagi

11-El.-2-m-50-Ohm-V-Yagi

 Design study V-Yagis

Low Noise Optimized Wideband-14-El.-12,5-Ohm-EME-Yagi

You can also use the Yagi for terrestrial DX work with good success! Excellent gain, 

 G/T and bandwidth. Ultra low noise temperature, very good performance for that boomlength!

The 14-El.-OWL built by 

Krzysztof,

SQ9PUT

 

 

Krzysztof,

SQ9PUT

has now stacked 2x14-El

 

Boomlength 4,17 lambda = 8,65 m

Gain 14,26 dBd       F/B > 30 dB

Bandwidth SWR <= 1,1 from 144-145 MHz

Element-positions

Ref Rad D 1 D 2 D 3 D 4 D 5 D 6 D 7 D 8 D 9 D 10 D 11 D 12
0 mm 155 mm 398 mm 840 mm 1405 mm 2010 mm 2710 mm 3485 mm 4325 mm 5180 mm 6075 mm 6985 mm 7845 mm 8675 mm

Element-lengths ( Rad 12mm) in mm

The given length of the radiator element is from tip to tip, including 10mm spacing for the insulated part. It is highly recommended to use 8- or 10-mm-elements for low losses and greater bandwidth. 
  Ref Rad D 1 D 2 D 3 D 4  D 5 D 6 D 7 D 8 D 9 D 10 D 11 D 12
10 mm 1026 mm 982 mm 958 mm 924 mm 912 mm 900 mm 889 mm 879 mm 871 mm 859 mm 850 mm 840 mm 836 mm 804 mm
8 mm 1028 mm 982 mm 963 mm 930 mm 919 mm 907 mm 896 mm 887 mm 879 mm 867 mm 858 mm 849 mm 845 mm 813 mm