High-Gain, Robust, Lightweight Antenna
概览
25316 Yagi天线用于TX320、TX312和OMNISAT-M卫星发射器。这种右旋圆极化（RHCP）天线的增益为11.0 dBi。25316必须朝向合适的方位和倾角，以指向卫星。含有可调倾角的固定硬件。要求使用COAXNTN-L线缆来连接天线与卫星发射器。
图像
技术说明
Campbell Scientific生产的25316 交叉Yagi天线用于TX320、TX312和SAT HDR GOES卫星发射器，也可能可以用于其它厂家生产的一些GOES卫星发射器。这种高增益的耐用的重量轻的天线为所有的卫星数据收集平台（DCP）提供了最佳性能。它包含两份正交位移的5单元Yagi天线单元，固定在普通的铝棍上。天线的旋进式单元便于运输、储存和野外安装。
Yagi天线
Yagi天线是一类有方向性的天线，含有一根主杆指向发射/接收的方向，主杆上以90°角垂向安装有几根短棒；短棒的长度和间距尽可能的设置到发射和接收的期望频率波段。
| 注意：在2009年3月10日，25316 11-dBi Yagi天线替代了17751 11-dBi Yagi天线；在2004年8月20日，#17751天线替代了#12261 9-dBi Yagi天线。 |
产品规格
| Dimensions | 99.06 x 15.88 x 15.88 cm (39.0 x 6.25 x 6.25 in.) |
| Weight | 2.06 kg (4.55 lb) |
Electrical |
|
| Frequency | 401.8 MHz (nominal) |
| Bandwidth | 2 MHz (minimum) |
| Input Power | 15 W (maximum) |
| Input Impedance | 50 Ω (nominal) |
| SWR | 1.50 (maximum) |
| Directivity | +14.0 dBic (nominal) |
| Gain | 11.0 dBi |
| Polarization | Right-hand circular |
| Half Power Beam Width | 47° (nominal) |
| Connector | Type N female |
Environmental |
|
| Wind | 100 knots |
| Ice & Snow | 100 lb/ft2 |
| Rain | 5 in./hr |
| Temperature | -65° to +65°C |
| Relative Humidity | 0 to 100% |
| Altitude | -1000 to +15,000 ft MSL |
| Lightning | Antenna and elements at DC ground |
Mechanical |
|
| Pipe Mounting | 3.8 to 6.0 cm (1.5 to 2.375 in.) diameter |
| Azimuth Adjustment | 360° |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
通讯设备
| Product | Compatible | Note |
|---|---|---|
| OMNISAT-M (retired) | ||
| SAT HDR GOES (retired) | ||
| TX312 (retired) | ||
| TX320 (retired) | ||
| TX321 (retired) | ||
| TX325 | ||
| TX326 |
Additional Compatibility Information
Transmitters
The 25316 Yagi antenna may also be used with EUMETSAT satellite transmitters and some GOES transmitters manufactured by other companies.
Antenna Cable
The COAXNTN cable is used to attach the antenna to the transmitter.
相关技术文档
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Common Accessory for the following products:
Replacement Part for the following products: