塔放是一个经济实惠的信号覆盖方案，能让运营商通过只增强上行信号敏感度来改善基站的整个网络覆盖效果。一般会将其安装在塔顶，尽可能地靠近接收天线，来尽力减少噪音和信号弱区。
特点:
示意图:
| Items | Uplink | Downlink | |
|---|---|---|---|
| Working Frequency (customize) | Band1 | 824~849 MHz | 869~894 MHz |
| Band2 | 890~915 MHz | 935~960 MHz | |
| Band3 | 1710~1785 MHz | 1805~1880 MHz | |
| Band4 | 1850~1910 MHz | 1930~1990 MHz | |
| Gain | 12±1dB | -- | |
| Flatness | ≤ ±0.5dB | -- | |
| Noise Figure | ≤ 1.8dB | -- | |
| Group Delay | 45 ns max over and 5MHz in Rx Band | ||
| Return Loss in by pass Mode | > 15dB | > 18dB< | |
| Return Loss in Normal Mode | > 17dB | > 18dB< | |
| Max Input Power | < 12dB | -- | |
| Insert Loss in by-pass Mode | < 2.8dB Max | 0.50dB typ., 0.70dB max | |
| Inter-modulation Products in Rx Band | < 112dBm (2 Tx carriers at + 43dBm) (power up) | ||
| Output 1 dB Compression | > 20dBm | -- | |
| I/O Impedance | 50Ω | ||
| Power Supply | DC 10-30V | ||
| Operating Current per TMA(Without RET) | Nom. 280mA at 10V / Nom. 110mA at 30V | ||
| Power Handing | 2.5KWPEAK; 200W AVG | ||
| Alarm Management(Optional) | AISG | ||
| Material | Aluminum Housing | ||
| RF Connector | 7/16 DIN female | ||
| AISG Connector(Optional) | 8-pin female, IEC 60130-9(Pin 3:RS485B, Pin 5:RS485A, Pin1 & Pin6: 9-30V DC, Pin7: DC return, other pins: not connected) | ||
| Working Temperature Range | -40 ~ +65℃ | ||
| EMC | According to ETS 300 342-3 | ||
| MTBF | > 1000000 hours(per TMA) | ||
安信通讯是无线通讯领域专业的制造商和方案供应商，产品包括多系统分布式天线系统、移动通信直放站、集群通信直放站、室分无源器件以及网管软件系统等，销往全球100多个城市和30多个国家。我们致力于为电信运营商和企业提供最优质的移动通信和集群通信信号优化基础设施和整体解决方案。
联系我们:
电话: +86-755-86238970
传真: +86-755-26495994
Skype: action.technologies
版权 © 2014 ~ 2020 深圳市安信通讯技术有限公司版权所有