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Optibeam Antenna
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Optibeam - OB5-17 - 5 Element Monoband Yagi 17m - 17
OB5-17
New product
As you know the Yagi as a symmetrical structure must always be fed using a balun at the feed point, otherwise the performance will be significantly lost.
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| Bands | 17 | ||
| Gain (dBd) * | 8.6 | ||
| Gain (dBi) ** | 15.9 | ||
| F/B (dB) | 27 | ||
| VSWR | |||
| 18,069 - 18,130 - 18,169 | 1,1 - 1,05 - 1,1 | ||
| Elements (number) | 5 | ||
| Max. Elementlength (m) | 8.5 | ||
| Boomlength (m) | 12.08 | ||
| Turning Radius (m) | 6.35 | ||
| Feedlines (number) | 1 Coax 50 Ohm | ||
| Weight (kg) | 60 | ||
| Windload at 130 km/h | 958 N / 1,20 m² / 12,9 feet² | ||
| * = average gain over dipol in free-space / for comparison: 2 el monobander 4 dBd, 3 el 5-6 dBd |
| ** = average gain at 20m above ground (= dBd + 2.15 dBb isotropic + about 5 dB ground reflection) |
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