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

 

horizontal rule

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

horizontal rule

3-Element-50Ohm-Yagi

for 144-146 MHz

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

Boom length is 60 cm

 

Element-Distances

Ref-Rad Rad-Dir
350 mm 250mm

Element-Lengths  mounted with Polyamid-clamps above the boom

Element diameter    Reflector     Radiator (10mm)     Director   
10 mm 1030 mm 984 mm 864 mm
8 mm 1032 mm 984 mm 874 mm
6 mm 1034 mm 988 mm 884 mm
4 mm 1036 mm 993 mm 897 mm
3,2 mm 1037 mm 993 mm (4 mm) 903 mm

 

For feeding make 4-5 turns of the coax-cable

Here it is low-loss cable Aircell-5




The Yagi built by

Reiner, DL2AAZ