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 |
17-Ele.-28-Ohm-DK7ZB-Yagi (12,15m Boom)
The 17-Ele-28-Yagi ready for EME-use at the station of DL1DWI (Gerhard) |
Lengths and positions of the Elements
The given length of the radiator element is from
tip to tip, including 10mm spacing for the insulated part.
Updated data 09-Sept-2009 with 12,7mm (1/2 inch) elements and 6mm-elements. The Yagi in the VE7BQH-list has 6mm elements, with 8mm or 10mm the bandwidth is greater and the antenna has slightly more gain, butmore windload.
Element | Position | Length (12,7mm) | Length (10mm) | Length (8mm) | Length (6mm) |
Ref | 0mm | 1020mm | 1024mm | 1025mm | 1030mm |
Rad | 345mm | 980mm (12,7mm) | 985mm (12mm) | 989mm (12mm) | 995mm (12mm) |
D 1 | 520mm | 945mm | 956mm | 964mm | 972mm |
D 2 | 1015mm | 908mm | 918mm | 926mm | 936mm |
D 3 | 1690mm | 891mm | 901mm | 909mm | 919mm |
D 4 | 2505mm | 873mm | 883mm | 891mm | 899mm |
D 5 | 3365mm | 863mm | 873mm | 881mm | 891mm |
D 6 | 4260mm | 855mm | 865mm | 873mm | 883mm |
D 7 | 5165mm | 851mm | 861mm | 869mm | 879mm |
D 8 | 6070mm | 849mm | 859mm | 867mm | 877mm |
D 9 | 6975mm | 846mm | 856mm | 864mm | 874mm |
D 10 | 7880mm | 844mm | 854mm | 862mm | 872mm |
D11 | 8785mm | 839mm | 849mm | 857mm | 867mm |
D 12 | 9690mm | 838mm | 848mm | 856mm | 866mm |
D 13 | 10595mm | 838mm | 848mm | 856mm | 866mm |
D 14 | 11410mm | 854mm | 864mm | 872mm | 882mm |
D 15 | 12110mm | 807mm | 817mm | 825mm | 835mm |
Element-current-profile
4x17-Ele.-H-configuration, Gain 21,72dBd (without stacking losses), G/T=+0,12
Vertical 5,19m, horizontal 5,01m