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Optibeam Antenna
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Optibeam - OB6-3M - 6 Element, 3 Band - 20 / 15 / 10
OB6-3M
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 / 15 / 10 | |
| Gain (dBd) * | 4,2 / 4,1 / 4,7 | |
| Gain (dBi) ** | 11,5 / 11,8 / 12,5 | |
| F/B (dB) | 25 / 15 / 25 | |
| VSWR | ||
| 14,00 - 14,19 - 14,35 | 1,3 - 1,0 - 1,3 | |
| 21,00 - 21,25 - 21,45 | 1,8 - 1,1 - 1,7 | |
| 28,00 - 28,50 - 29,00 | 1,2 - 1,1 - 1,3 | |
| Elements (number) | 6 | |
| Active Elements | 2 / 2 / 2 | |
| Max. Elementlength (m) | 8.08 | |
| Boomlength (m) | 3.1 | |
| Turning Radius (m) | 4.31 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 15 | |
| Windload at 130 km/h | 367 N / 0,46m² / 4,9 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 dB isotropic + about 5 dB ground reflection)
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