Low Q Yagis - G4CQM - 2017

WS734115 432MHz (70cm) 34 Element Yagi Advanced OWA...

WS734115 4nec2 3D

WS734115 34 element yagi is a unique design, a true Advanced OWA, and will stand up to examination in any software package... Seen here in 4nec2 by Arie Voors, YAGIMAX 3.51 by the late Lew Gordon K4VX, and K6STI's AOP (AO Professional)!

Because of the large diameter driven element segmentation cannot exceed 22 segments per λ/2 and has been set at 20 (Auto segmentation) for tuning purposes!

Reactance has been contained within very tight limits (+j7.0Ω to -j3.0Ω) so enabling a high degree of stability along with maximum performance. This has been achieved by the use of a two-tier tightly coupled director cell (D2/3 and D4/5). The result, average Q-factor shows a shallow gradient like that seen in a highly stable DL6WU long yagi antenna...

WS734115 in 4nec2 using 18 segments per half λ

WS734115 displayed in YAGIMAX 3.51 by the late Lew Gordon K4VX!
WS734115 displayed in YAGIMAX 3.51Dimensions

 

Impedance Vs Reactance seen in 4nec2 and also SWR plot in YAGIMAX 3.51
Impedance Vs Reactance seen in 4nec2SWR plot in YAGIMAX 3.51

WS734115 Average Q-factor

Segmentation animation demo - 5/10/15/18/20/22 segments per 1/2λ
Segmentation animation demo - 5/10/15/18/20/22 segments per 1/2λ

 

WS734115 Horizontal and Vertical planes seen in 4nec2 by Arie Voors!
Horizontal PlaneVertical Plane
WS734115 Azimuth and Elevation linear plots seen in K6STI's AOP
Azimuth PlotElevation Plot

 

Single WS734115 seen in TANT!
Single WS734115 seen in TANT!

Files...

WS734115.ANT

WS734115.nec


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