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Optibeam Antenna
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OPTIBEAM - OB5-20R - 5el 20m reflector-driven monoband Yagi
OB5-20R
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| OB5-20R | 5 Element Monoband Yagi 20m | |
| Bands | 20 | |
| Gain (dBd) * | 7,70 | |
| Gain (dBi) ** | 14,90 | |
| F/B (dB) | 36,00 | |
| VSWR | ||
| 14,000 - 14,220 - 14,350 | 1,17 - 1,13 - 1,08 | |
| Elements (number) | 5 | |
| Max. Elementlength (m) | 11,16 | |
| Boomlength (m) | 12,00 | |
| Turning Radius (m) | 7,00 | |
| Feedlines (number) | 1 Coax 50 Ohm | |
| Weight (kg) | 65 | |
| Windload at 130 km/h | 920 N /1,15 m² / 12,36 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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