| 摘要 |
Device for receiving radio call messages, preferably on board ships, which device comprises a number of receivers (1) for different frequencies from various stations and/or transmitters and means for processing the messages. The output of each receiver is connected to the input of a shift register (4) of which the output signal is a binary signal having the value "1" or "0" and each output is fed to the input of an identifier (11) for determining the pertinence of the messages to the relevant ship. The outputs of the identifier or of the identifiers (11) are connected to a switching unit (14), which, in case the identifier means (11) has identified a message pertinent to the relevant ship, connects the appropriate shift register to a store (13) available at that moment. A cyclic scanner (18) then quickly and successively reads out the completed and stored messages and transfers them to a terminal station for further storing and processing. |
