Construction Details

2-El.-12,5-Ohm (0,35m)   

2-El.-28-Ohm (0,60m)

3-El.-12,5-Ohm (1,90m)

3-El.-28-Ohm (1,90m)

3-El.-28-Ohm (2,50m)

4-El-12,5-Ohm (2,90m)

4-El-12,5-Ohm (3,60m)

5-El.-28-Ohm (4,50m)

5-El-12,5-Ohm (6,00m)

5-El-18-Ohm (6,00m)

6-El.-28-Ohm (7,20m)

7-El.-28-Ohm (9,20mm) 8-El.-28-Ohm (12,30m) 9-El.-28-Ohm (14,00m)
  new 4-El-28-Ohm (2,20m)  

3-Element-28-Ohm- Yagi with 1,90m-Boom

Broadband version

Short data: Gain 5,7dBd, F/B >20dBdB, bandwidth 1MHz at SWR < 1.5

Elements 12mm

Element

Element-position (mm)

Element-length (mm)

Ref

0

3020

Rad

920

2845

Dir 1

1850

2660

Match with 2xLambda/4 75-Ohm-coax in parallel to a grounded socket, feedpoint impedance 50Ohm.