Construction details 9-Ele.-28-Ohm 10-Ele-28-Ohm 11-Ele-28-Ohm
12-Ele.-28-Ohm 14-Ele.-28-Ohm 17-Ele.-28-Ohm 19-Ele.-28-Ohm

12-Ele.-28-Ohm-DK7ZB-Yagi (8,00m Boom)

one of the most built Yagis in DK7ZB-design, very good data (see VE7BQH-List)

4x12-Ele-EME-

Yagi-Group

built by Frank, DH7FB

Each Yagi with a gain of 14,2dBd, Gain of the group 20dBd, G/T -1,60

Details by DH7FB with remote control by Internet

Link

 

4x12-Ele.-28Ohm-Yagi at DK0TU

(Technical University of Berlin)

Tnx photo to Arno, DL7WC

The 12-El.-Yagi built by Adam, 9A4QV

Antenna by Graeme, VK3GOM

Yagi built by 

Robert, SP8RHP (KO10FF)

He reports SWR 1.1 from 144,0-144,8MHz

 

Element-lengths ( Rad 12mm) in mm

  Ref Rad D 1 D 2 D 3 D 4  D 5 D 6 D 7 D 8 D 9 D 10
10mm 1010 972 942 915 897 882 872 866 860 860 871 865
8mm 1013 972 948 922 904 890 880 874 868 868 879 873
6mm 1016 972 954 929 912 898 889 884 878 878 888 882
4mm 1019 972 962 938 922 909 900 895 889 889 899 894

Element-positions in mm

Ref Rad D 1 D 2 D 3 D 4 D 5 D 6 D 7 D 8 D 9 D 10
0mm 405 680 1275 1970 2800 3685 4570 5485 6385 7275 7980

Element-current-profile

4 Yagis stacked in H-configuration, Gain 20dBd, G/T=-1,6

vertical stacking 4,34m, horizontal stacking 4,12m

3dB hor = 13°, 3dB ver = 12,6°