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-Ohm (1,50m)  5-Ele.-28-Ohm (1,80m) 5-Ele.-28-Ohm (2,00m) 6-El.-28-Ohm (2,40m)
6-El.-28-Ohm (2,60m) 7-Ele.-28-Ohm (3,00m) 7-Ele.-28-Ohm (3,30m) 8-Ele.-28-Ohm (4,35m)

7-Element-Yagi 28Ohm, 3.00m-Boom

7-Element-Yagi 28Ohm, 3.00m-Boom

 

The picture left shows the 2x7-El.-group of

 Patrick, TK5EP

 

Link to the page of TK5EP

On his page (in english language a lot of informations and pictures)

This Yagi has slightly different dimensions with a gain of 10,6dBd, but greater bandwith. All details on the page of TK5EP.

 

      10,7dBd  Gain     

  F/B >30dB at 144,3MHz

3,00m-Boom 

For SSB/CW-part of the 2m-Band

Stacking distance 2,85m

Elementlengths and -positions, Radiator always 10mm diameter! 

Diameter Ref Rad (10mm) D 1 D 2 D 3 D 4 D 5
8mm 1022mm 972mm 949mm 922mm 906mm 909mm 881mm
6mm 1024mm 974mm 956mm 930mm 914mm 917mm 889mm
Position 0mm 275mm 465mm 920mm 1605mm 2360mm 2980mm

Patterns for 144,3MHz, above 145MHz increase the back lobes and the antenna has 0,1dB more gain