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Optibeam Antenna
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Optibeam - OBLY20-5 - 20 Element Log Yagi 20-17-15-12-10m
OBLY20-5
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| Bands | 20 / 17 / 15 / 12 / 10 | |
| Gain (dBd) * | 6,4 / 6,4 / 6,4 / 6,4 / 6,4 | |
| Gain (dBi) ** | 13,5 / 13,9 / 14,0 / 14,1 / 14,2 | |
| Practical performance (due to active radiation area) |
like 4el monoband Yagi | |
| F/B (dB) | 40 / 45 / 45 / 33 / 30 | |
| SWR | all band ranges < 1.5 | |
| Elements (number) | 20 | |
| Active elements |
between 70 and 100% of the entire |
|
| Max. element length (m) | 11,36 | |
| Boom length (m) | 15,00 | |
| Turning radius (m) | 8,95 | |
| Feed lines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 120 | |
| Windload at 130 km/h | 1.988 N / 2,50 m2 / 26,81 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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