PROCESS, SENDER AND RECEIVER FOR TRANSMITTING AND SELECTING LOCAL RADIO PROGRAMS IN A COMMON-WAVE BROADCASTING NETWORK

摘要

Common-wave broadcasting of radio programs is known. Common-wave operation of radio senders allows the available transmission band width to be particularly well utilised, for example for national scale common-wave broadcasts. A new process now allows a stereo transmission channel to be divided into two mono transmission channels during radio broadcasts and to broadcast certain programs only through determined senders. Information on the division of the used stereo transmission channel into two mono transmission channels is further broadcast over the whole common-wave transmission network. This information causes receivers tuned into said transmission channel to switch automatically to mono evaluation of the reception signal. On a regional level, information may also be broadcast on which of both mono transmission channels may be received. Alternatively, the receiver or user himself may select the mono transmission channel he wishes to receive. This process may be implemented with all common-wave broadcasting modes.