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The Yagi built by Pavel, OK1DX |
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| 4-El-10m | |||
| 4-El.-15m | |||
| 4-El.-20m |
4-Element-15-m-Yagi with 28 Ohm
Boom 5,00 m
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The Yagi built by Pavel, OK1DX |
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Antenna built by Attila, DL1NUX
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Modified version with a folded dipole, built by François, HB9BLF Link to the page of HB9WW with an interesting description by HB9BLF (PDF-File with pictures in French language) |
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Yagi built by Andy, M0CTR
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The 4-El.-Yagi built by Tony, M0TAZ Link to the page of Tony here |
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Short data for the Yagi at the begin, in the middle part and at the end of the band
Plot with the NEC-II-reference of YO7.2 by K6STI
The meaning of the data :
Frequency, gain, F/R, radiation resistance (impedance), SWR and loss against a theoretical defined maximum- gain-Yagi with the given boomlength. Remember that this gain is only available with very low impedance and extrem low bandwidth!
Elements of the 4-El.-15m-28Ohm-Yagi, lengths for one
element-half:
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25x2mm |
20x1,5mm |
16x1mm |
Position |
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Ref |
1,00m |
1,00m |
1,625m |
0m |
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Rad |
1,00m |
1,00m |
1,515m |
1,18m |
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Dir |
1,00m |
1,00m |
1,39m |
2,23m |
Dir |
1,00m |
1,00m |
1,19m |
4,98m |
Elevation-diagram (vertical pattern):
Gain, SWR, F/R and Z versus frequency:
