中欧体育自主研发生产的多腔体反向分路器采用模块化设计、互换性强、操作维护简单，可方便的安装在 19寸标准机柜上。并且为了保证质量，本产品模块均采用国内外上市企业和专业器件。本分路器采用不同模块组件，能更好的抑制无线对讲系统内外出现的各类干扰，用来提高接收信号质量，从根本上改善了多天线架设中难以解决的互调干扰问题。
The multi-cavity reverse splitter independently developed and produced by Lielong adopts modular design, strong interchangeability, simple operation and maintenance, and can be easily installed on a 19-inch standard cabinet. And in order to ensure the quality, the modules of this product are all listed companies and professional devices at home and abroad. This splitter adopts different module components, which can better suppress all kinds of interference inside and outside the wireless intercom system, improve the quality of the received signal, and fundamentally improve the intermodulation interference problem that is difficult to solve in the erection of multiple antennas.
分路器的工作原理是将一个信号分成若干路，每一路都是独立的，可以在每一路上进行独立的处理。分路器还可以用于增益平衡，例如在多路信号传输系统中，将多路信号的输入信号幅度进行调整，使输出信号的幅度相等。
Splitters work by dividing a signal into several paths, each of which is independent and can be processed independently on each path. Splitters can also be used for gain balancing, e.g. in multiplexing systems, where the amplitude of the input signal of the multiplex signal is adjusted so that the amplitude of the output signal is equal.
不受邻道频率干扰，外观紧凑，易于运输安装，可对上行弱信号进行增益补偿，避免电磁信号对弱信号的干扰。
It is not interfered by adjacent channel frequency, has a compact appearance, is easy to transport and install, and can compensate for the gain of the uplink weak signal to avoid the interference of electromagnetic signals on weak signals.
上行信号更干净，避免回波信号产生互调共振，防止浪涌信号冲击，提前统调，用户只需简易连线安装即可使用。
The uplink signal is cleaner, avoids the intermodulation resonance of the echo signal, prevents the impact of the surge signal, and coordinates the adjustment in advance, and the user only needs to easily connect and install it to use.
既减少信号的损失又可确保设备安全稳定地运转采用方腔结构，腔体之间不用软电缆连接，采用点频式腔体，通过调节腔体大小来改变频率，使频率匹配更加精确，信号衰减更小。
It not only reduces the loss of signal but also ensures the safe and stable operation of the equipment, adopts a square cavity structure, does not use soft cable connection between the cavities, adopts a point-frequency cavity, and changes the frequency by adjusting the size of the cavity, so that the frequency matching is more accurate and the signal attenuation is smaller.
可以承载150W以上功率，对比传统产品.超20W都会击穿功分器的隔离电阻，稳定隔离度>43d避免出现串频现象。
It can carry more than 150W of power, compared with traditional products. More than 20W will break down the isolation resistance of the power divider, and the stable isolation degree > 43d to avoid the phenomenon of series frequency.
| 型号/Model | DPTH-550F |
|---|---|
| 系统适应/System adaptation | DPMR,DMR,PDT,NXDN，TETRA |
| 频率范围(MHz)/Frequency Range (MHz) | 400-440MHz，450-490MHZ |
| 工作带宽/Working bandwidth | 4MHZ |
| 波段増益/Swing gains | 标准-26~+5dB可调/Standard -26~+5dB adjustable |
| 噪声系数/Noise figure | ≤1.5dB |
| 带内波动/In-band fluctuations | ≤0.5dB |
| 端口带内波动/Port in-band fluctuations | ≤1.0dB |
| 交叉调制/Cross-modulation | >60dBc@-20dBm |
| 工作电压/Operating voltage | 5V |
| 工作电流/Operating current | ≤300mA |
| 信号隔离/Signal isolation | >23dB |
| 输入端口电压驻波比/VSWR of the input port voltage | 1.4:1 |
| 输出端口电压驻波比/VSWR at the output port | 1.3:1 |
| 允许输入功率/Allowed input power | ≤10dBm |
| 阻抗/impedance | 50Ω |
| 接口类型/Interface type | N型/Type N |
| 温度范围/Temperature range. | -25℃+55℃ |
| 增益方式/Gain method | 反向增益/Reverse gain |
