| Details | 2-El.-4m-Yagi | 3-El.-4m-Yagi | 4-El.-4m-Yagi (12.5+50 Ohm) |
| 5-El.-4m-Yagi (28+50 Ohm) | 6-El.-4m-Yagi | 7-El.-4m-Yagi (28+50 Ohm) | 9-El.-4m-Yagi |
Version 1: 4-El.-12,5-Ohm-Yagi, Boom 2,57 m, Gain 8.3 dBd, F/B >25 dB
Version 2: 4-El.-50-Ohm-Yagi, Boom 2,00 m, Gain 6.4 dBd, F/B 18 dB (see below)
New by KONNI Version 3: 4-El.-50-Ohm-Yagi, Boom 1,60 m, Gain 6.1 dBd, F/B 24 dB (see below)
The Yagi Version 1 is a narrow-band, high-gain design, do not use this antenna if others are nearby!
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John, M0UKD built this Yagi for the cumulative 70-MHz-Contest on 09-Aug-2015 more informations here: |
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Activation 3A 70-MHz- meteorscatter by Jean-Jacques, ON7EQ and Hans, ON5AEN |
The 12,5-Ohm-Yagi, built by Peter, OE5MPL
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The 4-El.-Yagi by Michal, OK1VM |
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The Yagi built by Tomas, OK1DXD |
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Azimuth |
Elevation |
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Element-position |
Element-length (10 mm) | Element-length (12 mm) |
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Reflector |
0 mm |
2122 mm | 2120 mm |
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Radiator |
535 mm |
2006 mm |
2000 mm |
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Director 1 |
1485 mm |
1956 mm |
1950 mm |
| Director 2 | 2555 mm | 1908 mm | 1898 mm |
Version 2: 4-El.-50-Ohm-Yagi, Boom 2,00 m, Gain 6.4 dBd, F/B 18 dB
| Uncritical
broadband design, great bandwidth
This Yagi is a scaled version of the well proved Lightweight-2-m-Yagi |
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Element-position |
Element-length (8 mm) | Element-length (10 mm) |
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Reflector |
0 mm |
2140 mm | 2134 mm |
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Radiator |
785 mm |
2114 mm |
2110 mm |
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Director 1 |
1065 mm |
1970 mm |
1960 mm |
| Director 2 | 1970 mm | 1830 mm | 1820 mm |
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Version 3: 4-El.-50-Ohm-Yagi, Boom 1,60 m, Gain 6.1 dBd, F/B 24 dB
New DK7ZB-Yagi available by KONNI for 70 MHz!
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Gain 6,1 dBd F/B 24 dB Great Bandwidth For 1 MHz SWR <= 1,1! |
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Element-position |
Element-length (10 mm) |
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Reflector |
0 mm |
2148 mm |
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Radiator |
515 mm |
2118 mm |
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Director 1 |
715 mm |
1974 mm |
| Director 2 | 1560 mm | 1832 mm |
