概述近年来,随着数字技术、微电子器件的迅速发展。无线电通信技术正朝着数字化方向发展。移动式电台如何从体制上实现数字化?这是最近若干年来大家关心的问题,选址通信便成为引人注目的一个课题。选址通信以离散的脉冲信号代替连续信号的传输,需对信号进行一次调制和二次调制。我们所研制的选址通信机(实验性)的方案特点和主要性能指标是: Overview In recent years, with the rapid development of digital technology, microelectronic devices. Radiocommunication technology is moving in the direction of digitization. How mobile stations are digitally institutionalized? This is a problem that everyone has been concerned with in recent years. Site-based communication has become an attractive topic. Site communication to discrete pulse signal instead of continuous signal transmission, the need for a signal modulation and secondary modulation. We have developed a site communication device (experimental) program features and main performance indicators are: