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 |
12-Element-28Ohm- DK7ZB-Yagi for 432MHz
Data for a single Yagi: Gain 13,8dBd 3dB-angles: hor=28,8° ver=30,6° Best stacking distances: 1,35m vertical 1,45m horizontal -------------------------------- 8x12-El. stacked at Contest-Crew OK1KRQ Gain of the group >21dBd
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4x12-Element-Yagi-Group by Hans-Joachim, DF1JM
Link to details on his Homepage:
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Two stacked 12-Element-28Ohm-Yagis for 70cm, built by Wolf, DK1IP
Professionell measuring by Wolf, DK1IP (Spectrumanalyser with Trackinggenerator Advantest R3361C and R&S SWR-Bridge ZRB2) gives SWR <1,04 at 15m-Aircell-7 low-loss cable for a single Yagi.
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Element |
Element-Position |
Element-Length (10mm) |
Element-Length (8mm) |
Ref |
0mm |
332mm | 334mm |
Rad |
115mm |
325mm (12mm) | |
D1 |
175mm |
307mm | 310mm |
D2 |
345mm |
291mm | 294mm |
D3 |
570mm |
284mm | 287mm |
D4 |
845mm |
277mm | 280mm |
D5 |
1130mm |
275mm | 278mm |
D6 |
1415mm |
273mm | 276mm |
D7 |
1700mm |
273mm | 276mm |
D8 |
1985mm |
271mm | 274mm |
D9 |
2255mm |
277mm | 280mm |
D10 |
2480mm |
260mm | 263mm |