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目前,民用双工无线电话机(简称双工机)在我国应用的相当普遍。能衡量一个双工机优劣的关键指标就是双工灵敏度。该指标不仅仅表达了双工机接收部分的性能,也反映了发射机杂波辐射对接收机干扰的大小。在生产和技术活动中,特别是技术引进以来,经常遇到双工灵敏度这一指标规定与实际要求相矛盾,以及对双工灵敏度的测量方面的不同意见。在此把意见概述如下:(一)在“80系列”技术条件中,对双工灵敏度的规定(可用灵敏度):
At present, the civilian duplex radiotelephone (referred to as duplex machine) is quite common in our country. A key metric that measures the pros and cons of a duplex machine is duplex sensitivity. This indicator not only expresses the performance of the duplexer receiving part, but also reflects the interference of the transmitter clutter radiation to the receiver. In production and technical activities, especially since the introduction of technology, the often conflicting duplex sensitivity specification contradicts the actual requirements and disagrees with the measurement of duplex sensitivity. Here is a summary of the comments as follows: (a) In the “80 series” technical conditions, the provisions of duplex sensitivity (available sensitivity):