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)

4-El.-50-Ohm-Yagi (0,76m-Boom) 

 Gain 6,0dBd           F/B >20dB

Extreme broadband version

Elementlengths

Diameter Reflector  Radiator  Director 1  Director 2 
6mm 1040mm 1028mm 960mm 891mm
8mm 1034mm 1032mm 952mm 874mm
10mm 1030mm 1030mm 944mm 864mm

Elementpositions

Reflector Radiator Director 1 Director 2
0 250 345 755

The 50-Ohm choke for feeding:

34,5cm RG-174 for 100Watt

37,0cm RG-188-Teflon for 200Watt

on a PVC-tube

Grounded coax-socket!