|
|
Gain 7dBd, F/B 12dB Weight only 240g with 3,2mm-elements! You can use the Yagi on 432MHz with gain > 4dBd ! Plot see down
3dB-angles: 58,0° hor, 81,6° ver Vertical stacking distance 2,00m |
| Details | 2-El.-2m | 3-El.-2m | 4-El.-2m | 5-El.-2m | 6-El.-2m |
| 7-El.-2m | 7-El.-70cm | 9-El.-70cm | 10-El.-70cm | 12-El.-70cm | 14-El.-70cm |
| Stacked 5-El-2m 25-Ohm new | 7-El.-2m 25+28-Ohm new | 8-El.-2m 28-Ohm new | 10-El.-70cm 28-Ohm new |
With the boomlength of 1m two different Yagis were realized: A 50-Ohm-Yagi with a PVC-Boom and a 28-Ohm-Yagi with a 16x1mm aluminium-boom and the DK7ZB-Match. Both Yagis have high gain and not a good F/B, but for most portable purposes it should be no disadvantage.The 28-Ohm-Yagi see down!
The 4-Element-2m-50Ohm-Yagi, Boom 100cm
|
|
Gain 7dBd, F/B 12dB Weight only 240g with 3,2mm-elements! You can use the Yagi on 432MHz with gain > 4dBd ! Plot see down
3dB-angles: 58,0° hor, 81,6° ver Vertical stacking distance 2,00m |
| The 4-Element-Yagi built by
Ondra, OK1CDJ |
 |
|
Positions |
Lengths (2,4mm) | Lengths (3,2mm) | Lengths (4mm) | Lengths (6mm) | |
| Reflector | 0mm | 1022mm | 1022mm | 1020mm | 1016mm |
| Radiator | 260mm | 977mm (4mm) | 977mm (4mm) | 977mm (4mm) | 980mm (6mm) |
| Director 1 | 470mm | 941mm | 935mm | 930mm | 924mm |
| Director 2 | 985mm | 921mm | 915mm | 910mm | 890mm |
For stacking use a distance of 2m, below the plots for 4 over 4
The plot for 432MHz, in practise SWR <1,5 on 430-440 MHz!
The 4-Element-2m-28Ohm-Yagi, Boom 100cm
|
|
Gain 7,5dBd, F/B 10dB 3dB-angles: 53,8° hor, 71,0° ver Vertical stacking distance 2,1m Boom 16x1mm-aluminium
|
| Position | Lengths (4mm) | Lengths (3,2mm) | |
| Reflector | 0mm | 1019mm | 1020mm |
| Radiator (4mm) | 190mm | 988mm | 989mm |
| Director 1 | 545mm | 949mm | 954mm |
| Director 2 | 980mm | 944mm | 949mm |
