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 1,25m

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

Short data for a single Yagi and vertically stacked Yagis:

  Gain 3dB hor 3dB ver
1x4 El 8,2dBd 51,4 65,4
2x4 El 11,0dBd 51,6 25,0
4x4 El 14,0dBd 51,8 12,0

Element-Positions

Ref Rad D1 D2
0mm 260mm 720mm 1245mm

Element-Lengths

Diameter Ref Rad  D1 D2
4mm 1036mm 972mm (6mm) 955mm 934mm
6mm 1032mm 973mm (6mm) 945mm 924mm
8mm 1030mm 968mm (8mm) 937mm 916mm

Horizontal and vertical pattern for a single Yagi at 144,3MHz

Vertical patterns for stacked Yagis (4 over4 and 4 over 4 over 4 over 4) at 144,3MHz, gain without stacking losses for cables and connections