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| 無線電設備 > 天線系列 > Butternut 系列天線 > 270-30 > |
270-30 Model
10/11 Butterfly Beam Antenna |
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| Interested in a small lightweight beam for the 10 or 11 meter band? Butternut's Model 10/11 mono-band was derived from the HF5B. The antenna can be tuned for either band. A TV antenna rotator and mast are all you need for this fine performer. |
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Wing Span:
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10 ft. 6 in. (3.2 m) |
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Boom Length:
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4 ft. (1.2 m) |
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Turning Radius:
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6 ft. 6 in. (2 m) |
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Vertical Spreaders:
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5 ft. (1.5 m) |
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Shipping Weight:
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14 lbs (6.3 kg)
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Feed Point Impedance:
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Nominal 50 ohms. Includes RF connector for direct connection to any length feed line terminated in PL-259 |
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VSWR at Resonance:
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1.5:1 or less |
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Power Rating:
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Legal limit |
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Wind Loading:
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3 ft2 (.3 m2)
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Unguyed Wind Survival:
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80 mph (129 kph)
Bandwidth for VSWR 2:1 or Less: 10 m - entire band
11 m - entire band |
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Gain:
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5 dBd
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Front-to-back:
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15 dB+
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Front-to-side:
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20 dB
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Accepts up to a 1-1/2 in (38.1 mm) mast. Light enough to be turned with a TV rotator. |
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