| Construction | 12-Ele.-28-Ohm | 13-Ele.-28-Ohm | 14-Ele-28-Ohm | 16-Ele.-28-Ohm |
| 17-Ele.-28-Ohm | 19-Ele.-28-Ohm | 21-Ele.-28-Ohm | 23-Ele.-28-Ohm | 27-Ele.-28-Ohm |
27-Element-28Ohm- DK7ZB-Yagi for 432MHz
|
Short data for 432MHz: Gain 17,7dBd, F/B 43,5dB 3dB hor 17,8° 3dB ver 18,2°
The Yagi has a boom-length of 7,05m and was designed for an extrem good pattern. Fine-tuning with the length of the radiator, may be you must correct D1, too. |
 |
|
Horizontal pattern, 0dB=17,72dBd |
Vertical pattern, 0dB=17,72dBd |
Lengths and positions of the Elements:
|
Element |
Element-Position |
Element-Length (6mm) |
|
Ref |
0mm |
337mm |
|
Rad |
115mm |
327mm (12mm) |
|
D1 |
175mm |
314mm |
|
D2 |
345mm |
300mm |
|
D3 |
575mm |
292mm |
|
D4 |
845mm |
287mm |
|
D5 |
1125mm |
284mm |
|
D6 |
1420mm |
281mm |
|
D7 |
1715mm |
279mm |
|
D8 |
2015mm |
278mm |
|
D9 |
2315mm |
276mm |
|
D10 |
2615mm |
274mm |
|
D11 |
2920mm |
272mm |
|
D12 |
3225mm |
271mm |
|
D13 |
3530mm |
270mm |
|
D14 |
3835mm |
270mm |
|
D15 |
4140mm |
270mm |
|
D16 |
4435mm |
270mm |
|
D17 |
4740mm |
269mm |
|
D18 |
5045mm |
268mm |
|
D19 |
5350mm |
268mm |
| D20 | 5655mm | 267mm |
| D21 | 5960mm | 268mm |
| D22 | 6265mm | 271mm |
| D23 | 6545mm | 278mm |
| D24 | 6805mm | 280mm |
| D25 | 7025mm | 260mm |
4x27-Element stacked in H-configuration, stacking distances E and H are 2,20m
Gain 23,74dBd (without losses for the stacking harness), 3dB-angles 8.2°ver, 8.2°hor
|
4x27-Element, horizontal pattern |
4x27-Element, vertical pattern |
