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Optibeam Antenna
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Optibeam - OBLY14-4 - 14 Element Log Yagi 17-15-12-10m
OBLY14-4
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 / 15 / 12 / 10 | |
| Gain (dBd) * | 5,8 / 5,7 / 5,8 / 5,8 | |
| Gain (dBi) ** | 13,2 / 13,3 / 13,5 / 13,6 | |
| Practical performance (due to active radiation area) |
like 3el Monoband-Yagi |
|
| F/B (dB) | 35 / 40 / 42 / 32 | |
| SWR | all band ranges < 1.5 | |
| Elements (number) | 14 | |
| Active elements | between 70 and 100% of the entire antenna area operative | |
| Max. elementlength (m) | 8,84 | |
| Boomlength (m) | 7,50 | |
| Turning radius (m) | 5,90 | |
| Feed lines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 48 | |
| Windload at 130 km/h | 1.040 N / 1,30 m2 / 14,00 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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