论文部分内容阅读
引言松鸡系统需要用特高频(SHF)中继设备在其内外结点电路进行群传输。本文描述这种设备的工作参数和某些设计问题。内结点传输包括干线结点到入网结点和干线结点到单信道无线电入网中心(SCRA)的传输。在这些传输中,SHF 电台作为甚高频一超高频段的一种传输方式为通讯网频率分配提供了灵活性。
Introduction Grouse systems require a high-frequency (SHF) repeater device to perform group transmission on its internal and external node circuits. This article describes the operating parameters of this device and some design issues. Intra-node transmissions include the transmission of trunk nodes to the ingress and trunk nodes to the single channel radio access network (SCRA). In these transmissions, SHF stations provide the flexibility of frequency allocation for the communications network as a means of transmission in the VHF-UHF bands.