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| Construction | 2-Element (0,15m) | 3-Element (0,80m | 4-Element (1,00m) |
| 4-Element (1,25m) | 4-Element (1,50m) | 5-Element (2,00m) | 6-Element (2,60m) |
3-Element-12.5-Ohm-2m-Yagis for SSB/CW
Boom 0,80 m an 0,50 m (short version see down)
Gain 7,2 dBd, F/B > 10 dB, stacking distance 1,70 m
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Here the 4x3-Element group by Theo, PA1KT On his QRZ.COM-Page he has a comparison between the 4x3-El. and a 11-El-LFA-Yagi in an interesting video:
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Left: The 8x3-El.-Contest-Group of 5P5T
Data for single Yagi and vertical stacking
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Element-Positions
| Ref | Rad | Dir |
| 0 mm | 310 mm | 800 mm |
Element-Lengths
| Diameter | Ref | Rad (10 mm) | Dir |
| 4 mm | 1018 mm | 945 mm | 937 mm |
| 6 mm | 1016 mm | 945 mm | 927 mm |
| 8 mm | 1014 mm | 944 mm | 920 mm |
Plots at 144,3MHz, gain without stacking losses
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Single Yagi, hor. pattern, 0 dB = 7,26 dBd |
Single Yagi, vert. pattern, 0 dB = 7,26 dBd |
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2 x 3-El.-Yagi, ver pattern, 0 dB =10,44 dBd, |
4 x 3 El.-Yagi, vertical pattern, 0 dB = 13,4 dBd |
3-Element-12.5-Ohm-2m-Yagi for SSB/CW (short)
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Extreme high F/B and good pattern Gain 5,4 dBd F/B > 35 dB
Feeding with a coax impedance choke
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Feeding with an impedance choke, made of 2x42 cm Aircell-5. The max. power is 750 Watts SSB/CW |
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Element-Positions and Element Lengths
The SSB-Version is for 144-145 MHz, the FM-Version for 145-146 MHz
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Reflector |
Radiator |
Director |
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Position |
0
mm |
125
mm |
480
mm |
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SSB |
Length
4 mm |
1044
mm |
994
mm |
919
mm |
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Length
6 mm |
1042
mm |
987
mm |
906
mm |
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Length
8 mm |
1040
mm |
982
mm |
894
mm |
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FM |
Length
4 mm |
1036
mm |
985
mm |
912
mm |
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Length
6 mm |
1035
mm |
988
mm |
898
mm |
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Length
8 mm |
1032
mm |
973
mm |
882
mm |
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Yagi in portable use, built by Victor,EA1GAR
