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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 |
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.
| Ref | Rad | D 1 | D 2 | D 3 | D 4 | D 5 | D 6 | D 7 | |
| 10mm | 1017 | 972(10mm) | 939 | 909 | 892 | 883 | 874 | 890 | 874 |
| 8mm | 1020 | 977(8mm) | 947 | 917 | 902 | 891 | 882 | 898 | 882 |
| 6mm | 1024 | 983(6mm) | 953 | 925 | 910 | 899 | 892 | 906 | 890 |
| 4mm | 1028 | 989(4mm) | 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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