Details for all Yagis 1-El.-50Ohm 2-El.-28Ohm 3-El.-28+50Ohm
4-El.-50Ohm (0,76m) 4-El.-28Ohm (0,76m) 4-El.-28Ohm (0,82m) 4-Ele.-28-Ohm (1,00m)
5-Ele.-28+50Ohm (1,50m)  5-Ele.-28-Ohm (1,80m) 5-(6)-Ele.-28-(50)-Ohm (2,00m) 6-El.-28-Ohm (2,40m)
6-El.-28-Ohm (2,60m) 7-Ele.-28+50Ohm (3,00m) 7-Ele.-28-Ohm (3,30m) 8-Ele.-28-Ohm (4,35m)

3-Element-28Ohm-Yagi  

(50-Ohm-Yagi below, pse scroll)

Boom 85 cm

3-dB-hor = 61,4°, 3dB ver = 93,2°

6,4 dBd at 144,3 MHz, 16 dB F/B

6x3-El.-Group, built by 

Johannes, DJ5DM

 

Dimensions for 144,3 MHz, for 145 MHz all elements 5 mm shorter

Element-Distances

Ref-Rad Rad-Dir
480 mm 380 mm

Element-Lengths, mounted with Polyamid-clamps above the boom

Element diameter Reflector Radiator  Director
 10 mm 1016 mm 957 mm 899 mm
8 mm 1020 mm 962 mm 908 mm
6 mm 1024 mm 968 mm 916 mm

3-Element-50Ohm-Yagi

This Yagi is very uncritical and has a great bandwidth, but less gain

Element-Distances

Ref-Rad Rad-Dir
470mm 280mm

Element-Lengths, Radiator always 10mm, mounted with Polyamid-clamps above the boom

Element diameter Reflector Radiator (10mm) Director
10mm 1040mm 980mm 860mm
8mm 1041mm 980mm 868mm
6mm 1041mm 980mm 877mm