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4-Element-12.5-Ohm-Yagi with 2,90-m-Boom Short data: Gain 7,5 dBd, F/B >20 dBd, High Gain, good pattern Bandwidth 300 KHz (50.0-50.3 MHz) at SWR < 1.5 Elements 12, 10 or 8 mm 8mm-Elements for leightweight portable construction |
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| 4-El-12,5-Ohm (2,90 m) | ||
| 5-El-12,5-Ohm (6,00 m) | ||
| 7-El.-28+50Ohm (9,20+7,75 m) | 8-El.-28-Ohm (12,30 m) | 9-El.-28-Ohm (14,00 m) |
| 4-El-28/50-Ohm (2,20 m) | 5-El-50-Ohm (4,30 m) new | 6-El-50-Ohm (6m+7,20 m) new |
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4-Element-12.5-Ohm-Yagi with 2,90-m-Boom Short data: Gain 7,5 dBd, F/B >20 dBd, High Gain, good pattern Bandwidth 300 KHz (50.0-50.3 MHz) at SWR < 1.5 Elements 12, 10 or 8 mm 8mm-Elements for leightweight portable construction |
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The 4-Element-Yagi, built by Chris, DJ4WT |
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The antenna built by Kostas, SV1GSU
during the Aegean VHF-Contest 2014 |
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Element |
Position |
D=12mm |
D=10mm | D=8mm |
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R |
0 mm |
3080 mm |
3090 mm | 3100 mm |
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DE |
575 mm |
2870 mm |
2876 mm | 2880 mm |
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D1 |
1455 mm |
2790 mm |
2796 mm | 2808 mm |
| D2 | 2850 mm | 2700 mm | 2710 mm | 2720 mm |
Match with 2xLambda/4 50-Ohm-coax in parallel to a grounded socket, feedpoint impedance 50Ohm.
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