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Optibeam Antenna
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Optibeam - OB11-3 - 11 Element, 3 Band - 20 / 15 / 10
OB11-3
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| Bands | 20 / 15 / 10 | |
| Gain (dBd) * | 5,1 / 5,6 / 6,7 | |
| Gain (dBi) ** | 12,5 / 13,2 / 14,5 | |
| F/B (dB) | 22 / 22 / 25 | |
| VSWR | ||
| 14,00 - 14,19 - 14,35 | 1,2 - 1,0 - 1,3 | |
| 21,00 - 21,25 - 21,45 | 1,4 - 1,0 - 1,5 | |
| 28,00 - 28,50 - 29,00 | 1,4 - 1,0 - 1,5 | |
| Elements (number) | 11 | |
| Active Elements | 3 / 3 / 5 | |
| Max. Elementlength (m) | 10.96 | |
| Boomlength (m) | 6.1 | |
| Turning Radius (m) | 6.25 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 32 | |
| Windload at 130 km/h | 669 N / 0,84 m² / 9,0 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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