论文部分内容阅读
为满足不同用途需要,基地台是按系列化设计的。在频段方面,有VHF频段(30~50MHz、138~174MHz),UHF频段(406~512MHz)供选用。因技术规范不同,接收机和发射机有90系列、93系列、99系列供选择。在发射机输出功率方面,可提供5~50W、15~125W、25~250W各种系列射频功率放大器。以及根据不同系统,电台组网总体设计的配置,提供各种控制单元和专用部件。上述各单元做成插拨式模件,装入积木式机箱或者机柜中,从而保证模件的通用性、互换性。并且维修、检测也极为方便。
To meet the needs of different uses, base station is designed by series. In the band, there are VHF band (30 ~ 50MHz, 138 ~ 174MHz), UHF band (406 ~ 512MHz) for selection. Due to different technical specifications, the receiver and transmitter have 90 series, 93 series, 99 series for selection. In the transmitter output power, can provide 5 ~ 50W, 15 ~ 125W, 25 ~ 250W various series of RF power amplifiers. As well as various control units and special components according to the overall design configuration of different systems and radio networks. The above-mentioned units are made into plug-in modules, into the building blocks or cabinets, in order to ensure the versatility of the module, interchangeability. And maintenance, testing is also very convenient.