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1. 发明授权

US4555806A System for the automatic establishment of a shortwave telegraphy signal connection 失效
标题翻译：用于自动建立短波电报信号连接的系统
公开(公告)号：US4555806A
公开(公告)日：1985-11-26
申请号：US479771
申请日：1983-03-28
申请人： Wolf-Ruediger Lange , Anton Wessel , Udo Bohler , Klaus Volkheimer , Gunter Greiner , Peter Islet
发明人： Wolf-Ruediger Lange , Anton Wessel , Udo Bohler , Klaus Volkheimer , Gunter Greiner , Peter Islet
IPC分类号： H04B7/22 , H04L1/20 , H04B17/00
CPC分类号： H04L1/20 , H04B7/22
摘要： A system for the automatic establishment of a shortwave telegraphy signal connection between two transmitter-receiver stations within a frequency range subdivided into several channels. Both stations use their receiver to determine objective measurement values reflecting the transmission conditions over the individual channels. Active and passive channel analysis of the actual quality of the signal transmission is determined at each channel. The transmitter of the calling station is automatically tuned to the channel which corresponds to the best channel quality stored in its memory. A predetermined time after transmitting the call signal, the calling station switches to reception and upon reception of an acknowledgment signal from the counter station automatically begins the message transmitting-and-receiving operation. If after a predetermined time no acknowledgment signal is received, the transmitter automatically switches to the channel stored in its memory with the next best channel quality value.
摘要翻译：一种用于在频率范围内的两个发射机 - 接收机站之间自动建立短波电报信号连接的系统，其被细分成几个信道。两个站都使用其接收机来确定反映各个信道上的传输条件的客观测量值。在每个通道确定信号传输的实际质量的主动和被动信道分析。主叫台的发射机被自动调谐到对应于存储在其存储器中的最佳信道质量的信道。在发送呼叫信号之后的预定时间，呼叫站切换到接收，并且在从对方站接收到确认信号时，自动开始消息发送和接收操作。如果在预定时间之后没有接收到确认信号，则发射机以下一最佳信道质量值自动切换到存储在其存储器中的信道。

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