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9-Ele.-28-Ohm-DK7ZB-Yagi 5,00m Boom, Gain 12.5dBd The picture shows the antenna at PD0B, for more construction details see: |
| 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 |
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9-Ele.-28-Ohm-DK7ZB-Yagi 5,00m Boom, Gain 12.5dBd The picture shows the antenna at PD0B, for more construction details see: |
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4x9-Element stacked by Oene, PA3CWN
He is working EME with the group in H-configuration. |
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2x9-Element stacked by Peter, PA4PS
Stacking distance 3,50m
More information about the construction at his website:
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From 8-25 June-2007 Peter, PA3CNX and Rene, PE1L had an EME-activity from Bonaire (PJ4)
Result: 273 EME-QSOs and 51 DXCC Link to PJ4EME
The antennas are 50/200-Ohm modified Yagis with folded dipoles for WIMO Link to WIMO
(The 28-Ohm-Yagi has a slightly better performance!)
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2x9-El.-Yagi by Mark, CT1JFC
EME with 90Wtts into 35m coax and 2 Yagis |
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Anatoly, UN7BBJ with his 9-El.-Yagis |
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Element-lengths in mm for the 28-Ohm-Yagi. It is recommended to use the 10mm, 8mm or 6mm elements for best results. 4mm-elements have more losses, lower gain and the bandwidth is smaller.
The given length of the radiator element is from tip to tip, including 10mm spacing for the insulated part.
Updated with 12.7 mm (1/2 inch) elements 08-Sept-2009
| Ref | Rad | D 1 | D 2 | D 3 | D 4 | D 5 | D 6 | D 7 | |
| 12.7 mm | 1017 | 965 (12.7 mm) | 930 | 900 | 882 | 873 | 864 | 880 | 864 |
| 10 mm | 1017 | 972(10 mm) | 939 | 909 | 892 | 883 | 874 | 890 | 874 |
| 8 mm | 1020 | 977(8 mm) | 947 | 917 | 902 | 891 | 882 | 898 | 882 |
| 6 mm | 1024 | 983(6 mm) | 953 | 925 | 910 | 899 | 892 | 906 | 890 |
| 4 mm | 1028 | 989(4 mm) | 963 | 936 | 922 | 912 | 906 | 918 | 905 |
Element-positions
| Ref | Rad | D 1 | D 2 | D 3 | D 4 | D 5 | D 6 | D 7 |
| 0mm | 345mm | 615mm | 1175mm | 1870mm | 2675mm | 3505mm | 4345mm | 4980mm |
Current-profile
Plots for 144,3MHz with EZNEC +5
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