Construction   2-Element (0,15m)    3-Element (0,80m 4-Element (1,00m)
4-Element (1,25m) 4-Element (1,50m)   5-Element (2,00m) 6-Element (2,60m)

4-Element-12.5-Ohm-2m-Yagi for SSB/CW 

Boom 1,50m

F/B > 20dB, stacking distance 2,10m

  Gain 3dB hor 3dB ver
1x4 El 8,8dBd 50,0 62,2
2x4 El 11,7dBd 50,6 26,4
4x4 El 14,8dBd 51,2 12,8

4x4-El.-Yagi

at  DK4K

4x4-El.-12,5-Ohm-Yagis

for portable use

by Luca,  IW3FQT

Element-Positions

Ref Rad D1 D2
0mm 320mm 860mm 1480mm

Element-Lengths

Diameter Ref Rad (10mm) D1 D2
4mm 1020mm 949mm  942mm 922mm
6mm 1016mm 950mm  931mm 912mm
8mm 1014mm 950mm  923mm 904mm

Plots at 144,3MHz, gain without stacking losses

Single Yagi, hor. pattern, 0dB = 8,81dBd

Single Yagi, vertical pattern, 0dB = 8,81dBd

2xYagi, vertical pattern, 0dB = 11,77dBd

4xYagi, vertical pattern, 0dB = 14,81dBd