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上组漂亮的车载HF天线 [复制链接]

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离线woto
 
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742
只看楼主 倒序阅读 0楼 发表于: 2009-08-14
先欣赏一下,,,还没有货的
离线woto
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742
只看该作者 1楼 发表于: 2009-08-14
效果比yaesu的atas-120强许多...usd$xxx
离线BA5AP
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910
只看该作者 2楼 发表于: 2009-08-14
梁老板提供一下数据吧。
离线bd2fw
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12914
只看该作者 3楼 发表于: 2009-08-14
打劫
离线bd7oi
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6130
只看该作者 4楼 发表于: 2009-08-15
hi-q 值得搞条玩玩
离线woto
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742
只看该作者 5楼 发表于: 2009-08-24
'
梁老板提供一下数据吧。
'
看看这个


providing a frequency coverage of 2 to 30mhz, the barrett 910 features rapid tuning (typically <1.5s) and low power consumption. high radiation efficiency and accurate tuning are assured by maximising antenna current (not minimising the vswr) on every tune. the barrett 910 antenna incorporates a wideband amplifier that is activated in receive mode to enable channel scanning. due to its rugged rf design the barrett 910 antenna can also be used with high duty cycle applications such as the barrett 923 or 2020 fax and data system.



the active tuning elements of the antenna are housed in a grey weatherproof, impact resistant reinforced poly-carbonate moulding that incorporates a heavy duty anti-vibration mount at its base, even with its rugged construction, the barrett 910 weighs only 2.8kg.



the barrett 910 is supplied with an integral 2 metre whip and spring. the main antenna body has a 1.5 metre stub control cable, with a 4.5 metre extension cable to connect it with the transceiver. this composite cable incorporates coaxial, power supply and control cables. additional 4.5 metre or 10 metre extension cables are available if required.




specifications


frequency range: 2 to 30mhz continuous



rapid tuning: 1.5s (typical)



power rating: 125 watt pep - voice and data



input impedance: 50 ohm



vswr: better than 2.1



current drain: 600ma (typically)



body length: 610mm



whip & coil length: 1740mm



integral whip and spring length: 2000mm



maximum diameter: 120mm



body weight: 2.6kg



integral whip and spring weight: 0.50kg



mounting: 0.5" bsw stud, length 45mm
离线BG7PHA
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586
只看该作者 6楼 发表于: 2010-05-19
这个是自动的么?
离线赵宇宁
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3553
只看该作者 7楼 发表于: 2010-05-19
肯定是自动的,里面有电机的
离线bg6art
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23433
只看该作者 8楼 发表于: 2010-05-20
高q的电动螺丝刀