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Optibeam Antenna
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Optibeam - OB10-3W - 10 Element, 3 Band - 20 / 17 / 15
OB10-3W
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 | 20 / 17 / 15 | |
| Gain (dBd) * | 5,3 / 5,3 / 6,5 | |
| Gain (dBi) ** | 12,7 / 12,7 / 14,2 | |
| F/B (dB) | 25 / 26 / 24 | |
| VSWR | ||
| 14,00 - 14,21 - 14,35 | 1,4 - 1,0 - 1,4 | |
| 18,07 - 18,14 - 18,17 | 1,3 - 1,1 - 1,3 | |
| 21,00 - 21,28 - 21,45 | 1,4 - 1,0 - 1,5 | |
| Elements (number) | 10 | |
| Active Elements 20 / 17 / 15 | 3 / 3 / 4 | |
| Max. Elementlength (m) | 11.1 | |
| Boomlength (m) | 5.86 | |
| Turning Radius (m) | 6.22 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 33 | |
| Windload at 130 km/h | 700 N / 0,88 m² / 9,4 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 dB isotropic + about 5 dB ground reflection) |
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