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5-Element-12,5-Ohm- Yagi with 6m-Boom Short data: Gain 9.6dBd, F/R >28dB, bandwidth 300KHz (50.0-50.3 MHz) at SWR < 1.5
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| 4-El-12,5-Ohm (2,90m) | ||
| 5-El-12,5-Ohm (6,00m) | ||
| 7-El.-28+50Ohm (9,20+7,75m) | 8-El.-28-Ohm (12,30m) | 9-El.-28-Ohm (14,00m) |
| 4-El-28-Ohm (2,20m) | 5-El-50-Ohm (4,30m) new | 6-El-50-Ohm (6m+7,20m) new |
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5-Element-12,5-Ohm- Yagi with 6m-Boom Short data: Gain 9.6dBd, F/R >28dB, bandwidth 300KHz (50.0-50.3 MHz) at SWR < 1.5
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2x5-Element-12,5Ohm stacked Gain 12,3 dBd left: built by Tom, DK3EE
right: MM0CPS/GM2T built by Colin, GM0RLZ |
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updated data 16-May-2008 for better matching, radiator-construction see here
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Element |
El.-position |
El.-length (12mm) |
El.-length (10mm) |
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Ref |
0mm |
2980mm |
2980mm |
|
Rad |
760mm |
2846mm |
2850mm |
|
D1 |
2140mm |
2712mm |
2718mm |
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D2 |
4275mm |
2680mm |
2700mm |
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D3 |
5970mm |
2610mm |
2630mm |
Match with 2xLambda/4 50-Ohm-coax in parallel to a grounded socket, feedpoint impedance 50Ohm.
An other construction for the radiator is a folded dipole with an impedance of 50Ohm (4x12.5Ohm). At the feedpoint use a toroid balun 1:1 (T 200-6) to match the symmetrical load to the coax-cable.
