Construction Details

2-El.-10m-50Ohm

2-El.-12m-12Ohm

2-El-12m-28Ohm

Dualband 12/17m

2-El.-15m-28Ohm

2-El.-17m-28Ohm

2-El.-20m-28Ohm

2-El.-30m-28Ohm

Dualband 10/15m

2-Element-30-m-Yagi with 28 Ohm

MHz 10,100 10,125 10,150
Gain 4,28 dBd 4,36 dBd 4,48 dBd
F/B 16 dB

Dimensions of the 30-m-Yagi, 28 Ohm, Radiator-Reflector (Lengths for one element half)

If you must tune the antenna, correct both elements by the same amount

Elements Position 35x2 mm 30x2mm 25x2 mm 20x1,5 mm 16x1,5 mm 12x1 mm
Radiator 0 m 1,50 m 1,35 m 1,35 m 1,35 m 1,35 m 0,73 m
Director 2,80 m 1,50 m 1,35 m 1,35 m 1,35 m 1,35 m 0,22 m

Antenna patterns:

Azimuth plot free space

Elevation plot 12 m above ground