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-12,5-Ohm- 11-El.-EME-Yagi

 

Boomlength 2,9 lambda = 6,10 m

Gain 13,08 dBd    F/R = 24 dB

G/T for a 4x11-El.-EME-Group -2,48 dB at 144,1 MHz

Bandwidth  SWR<= 1,1 from 144,0-145,1 MHz

For stacking distances see the extract of the VE7BQH-list down. There you can make a comparison with other Yagis, too.

 

The Yagis left built by 

Javier, EA2TO

for Clubstation  EA2RCA

 

The 11-El.-OWL-Yagi as 4x22-El.-X-pol Group

Built by Wojtek,

SP2FOW

His comments:

"I have to say that the antenna exercise is great. On the moon I hear stations with reports similar, and sometimes better than working stations with longer antennas different design"

Compare the data in the VE7BQH-list with other antennas. Look for SWR, sidelobes, F/B and gain!

Element-positions

Ref Rad D 1 D 2 D 3 D 4 D 5 D 6 D 7 D 8 D 9
0 mm 170 mm 457 mm 935 mm 1485 mm 2075 mm 2780 mm 3565 mm 4395 mm 5265 mm 6085 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
10 mm 1016 mm 976 mm 951 mm 914 mm 895 mm 886 mm 884 mm 877 mm 862 mm 846 mm 841 mm
8 mm 1018 mm 976 mm 956 mm 921 mm 902 mm 894 mm 892 mm 885 mm 870 mm 855 mm 850 mm