Method and device for building up a connection in shortwave...

Details Method and device for building up a connection in shortwave... Method and device for building up a connection in shortwave...

H - Electricity

04

B

325/31

H04B 7/005 (2006.01) H04B 7/24 (2006.01)

Patent

CA 1269715

ABSTRACT The construction of a connection between the individual stations is achieved by means of a Call-Signal consisting of a synchronization and an Address-Signal. A prominent synchronization signal adapted to the transmission channel is used, which consists of narrow band mark and space - signals, which form the part - signal of a diversity pair. The device contains a synchronization signal receiver with means for the independent detection and evaluation (18-22) of both of the part - signals of the diversity pair as well as means for comparing the results thereby gained. By this means the construction of a connection between the stations of the radio network may be carried out fully automatically and even with poor transmission quality only the wanted stations are ever activated.

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