Arrangement for receiving stereophonic transmissions

Claim 1

ARRANGEMENT FOR RECEIVING MONAURAL AND STEREOPHONIC TRANSMISSIONS IN WHICH AN AUXILIARY CARRIER IS USED FOR STEREO TRANSMISSION PURPOSES COMPRISING A RECEIVER INPUT STAGE, INCLUDING THE INTERMEDIATE FREQUENCY AMPLIFIER, A DEMODULATOR STAGE, A STEREO-DECODER, TWO LOW-FREQUENCY AMPLIFIER CHANNELS AFTERCONNECTED TO SAID STEREODECODER, TWO LOUDSPEAKERS FOR BOTH SAID CHANNELS RESPECTIVELY, A FILTER UNIT ARRANGED BEHIND SAID DEMODULATOR STAGE FOR FILTERING OUT SAID AUXILIARY CARRIER, A RECTIFIER FOR SAID AUXILIARY CARRIER AFTERCONNECTED TO SAID FILTER UNIT, AN AMPLIFIER AND A RELAY, BOTH AFTERCONNECTED IN SERIES TO SAID FILTER AND SAID RECTIFIER, SAID RELAY BEING EXCITED BY SAID AUXILIARY CARRIER FILTERED OUT BY SAID FILTER UNIT ON TUNING SAID INPUT STAGE TO A STEREOPHONIC TRANSMITTING STATION AND BEING ADAPTED BY MEANS OF ITS CONTACTS TO SWITCHOVER SAID TWO LOW-FREQUENCY CHANNELS FROM PARALLEL CONNECTION AFTERCONNECTED TO SAID DEMODULATOR TO TWO SEPARATED STEREOPHONIC SOUND CHANNELS SEPARATELY CONNECTED TO THE OUTPUT OF SAID STEREO-DECODER WHICH IS SIMULTANEOUSLY CONNECTED IN SERIES TO SAID DEMODULATOR.