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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 Foto: DJ4IC |
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| 4-El-12,5-Ohm (2,90m) | ||
| 5-El-12,5-Ohm (6,00m) | ||
| 7-El.-28-Ohm (9,20mm) | 8-El.-28-Ohm (12,30m) | 9-El.-28-Ohm (14,00m) |
| new 4-El-28-Ohm (2,20m) |
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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 Foto: DJ4IC |
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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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Element |
Element-position (mm) |
Element-length (mm) |
|
Ref |
0 |
2980 |
|
Rad |
760 |
2860 |
|
D1 |
2140 |
2720 |
|
D2 |
4275 |
2700 |
|
D3 |
5970 |
2630 |
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.
