【天线专题】XR3-NV | 高性能14 单元 20 / 15 / 10 米 多段MONO竞赛八木天线

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The Ultimate Contest Tribander: fourteen elements delivering superior performance on 20, 15 and 10 meters！通联竞赛终极利器：14单元八木在20米，15米和10米段提供卓越表现。The XR3-NV has fourteen elements spread across three bands: three elements on 20, five on 15 and six on 10. In essence, three high-performance monoband Yagis with a common feedline. Consistent, stable performance across all three bands makes for all-weather performance (VSWR doesn’t go crazy during precipitation like some other brands) and enhanced performance on all three bands when stacked. There are extensive azimuth plots here (see gallery to the left) showing consistent azimuth pattern across the entire 20 and 15 meter bands and 700 kHz of 10 meters. The VSWR is also consistent across all three bands (see plots).XR3-NV 有14个单元分布在三个波段：在20米段有3个单元，15米段有5个单元，在10米段有6个单元。从本质上讲，高性能的mono八木天线的三个波段都共用同一根馈线。该天线在所有三个波段都能保证持续、稳定的性能，这使得在全天候通联比赛时，性能表现良好(不像其他品牌的天线在长时间使用后电压驻波比变得无比疯狂)，天线增强的性能使得三个波段在通联信号堆叠时表现良好。Like all G0KSC designs, there are no performance-robbing matching devices or traps and the highest quality materials are used throughout from aerospace grade aluminum to genuine Stauff insulators to stainless steel hardware. Like all Force 12 antennas, XR3-NV uses our famous riveted construction with ultra-rugged element brackets factory installed on the boom before shipping.像所有G0KSC设计的产品一样，该天线不会在匹配设备或陷波器时出现性能丧失，天线采用最高质量航天级铝材制作绝缘体不锈钢主件。和所有Force 12 生产的天线一样，XR3-NV使用我们著名的铆接结构，并在运输前，吊杆上安装超坚固的单元支架的工作就在工厂里完成了。Designed with tower side or ring rotator mounting in mind with 43.75 inches of open space near the center of boom with weight balancing options for mast or rotating tower mounting to minimize rotator stress.该天线在设计时就考虑到铁塔及旋转马达的安装，在吊杆的中央附近有43.75英寸的开放空间，以及考虑桅杆或旋转铁塔安装时为降低旋转马达的负载压力而增加了重量平衡选项。性能数据20m gain, free space7.76 dBi @ 14.200 MHz15m gain, free space8.15 dBi @ 21.200 MHz10m gain, free space9.69 dBi @ 28.300 MHz20m gain, 70 feet above average level ground13.12 dBi @ 14.175 MHz15m gain, 70 feet above average level ground13.68 dBi @ 21.225 MHz10m gain, 70 feet above average level ground15.32 dBi @ 28.100 MHz20m gain, 2 Yagi stack 70 & 90 feet above average level ground14.94 dBi @ 14.175 MHz15m gain, 2 Yagi stack 70 & 90 feet above average level ground15.57 dBi @ 21.225 MHz10m gain, 2 Yagi stack 70 & 90 feet above average level ground17.40 dBi @ 28.100 MHz20m 3 dB azimuth beamwidth 66.6 degrees15m 3 dB azimuth beamwidth 60.6 degrees10m 3 dB azimuth beamwidth 58.8 degrees20m 3 dB elevation beamwidth, 2 Yagi stack @ 70 and 90 feet6.7 to 21.1 degrees15m 3 dB elevation beamwidth, 2 Yagi stack @ 70 and 90 feet4.6 to 14.1 degrees10m 3 dB elevation beamwidth, 2 Yagi stack @ 70 and 90 feet3.5 to 10.6 degrees20m free space F/B19.27 dB @ 14.200 MHz15m free space F/B16.83 dB @ 21.200 MHz10m free space F/B30.39 dB @ 28.300 MHz20m VSWR bandwidth < 1.3:1 whole band15m VSWR bandwidth < 1.5:1 whole band10m VSWR bandwidth < 1.5:1 700 kHzPerformance data generated by G0KSC using EZNEC Pro/4 and confirmed in field testing @ W0LFA, April 2015.Mechanical相关机械性能参数：Boom: 6063-T832 seamless drawn aluminum tubing（吊杆）Elements: 6063-T832 seamless drawn aluminum tubing（桅杆）Brackets: 5052-H32 aluminum plate, waterjet cut（支架）Insulators: Stauff polypropylene （绝缘：聚丙烯材料）Hardware: aluminum rivets, stainless steel bolts, stainless steel and/or galvanized U-bolts（硬件：铝铆钉、不锈钢螺栓、不锈钢或镀锌u型螺栓）Boom support: single overhead guy（吊杆支撑）Net weight: 91 lbs approx.（净重）Effective area: 12.6 ft^2 （有效面积）Wind survival, elements: 112 mph（桅杆风阻）Wind survival, boom: 138 mph（吊杆风阻)Boom length: 23.3 ft（吊杆长度）Turning radius: 27.5 ft（旋转半径）Rotating Torque: TBD in-lbs（旋转扭矩）Mechanical data calculated by Yagi Stress Professional v2.54 under TIA-222-CContact Force 12 for more detailed mechanical data if needed 如果需要更多的机械参数，可以和工厂联系We do custom work – if you need a super heavy duty or other custom version of this or any model, get in touch!可以按照客人要求定制天线，有需要可以联系。价格： 2999,99 美刀业余无线电微信号：ham_cn添加朋友——搜号码：ham_cn