Frequency stabilized frequency converting radio repeater with local frequency modulation

Claim 1

A RADIO LINK FOR A PLURALITY OF RADIO FREQUENCY CHANNELS IN WHICH THE RESPECTIVE CHANNEL FREQUENCIES ARE INTEGRAL MULTIPLES OF A SUBSTANTIALLY LOWER FUNDAMENTAL FREQUENCY, COMPRISING A RECEIVER AND A TRANSMITTER EACH INCLUDING A FREQUENCY CONVERTER FOR EFFECTING A FREQUENCY CONVERSION TO AND FROM AN INTERMEDIATE FREQUENCY RESPECTIVELY, MEANS CONNECTING AN OUTPUT OF SAID CONVERTER OF SAID RECEIVER TO AN INPUT OF SAID CONVERTER OF SAID TRANSMITTER, A CONTROLLABLE OSCILLATOR CONNECTED TO SAID CONVERTER OF SAID TRANSMITTER WHICH OSCILLATES FREELY AT A CONVERSION FREQUENCY NECESSARY FOR DERIVATION OF THE TRANSMITTING FREQUENCY FROM THE INTERMEDIATE FREQUENCY, A STABILIZED OSCILLATOR GENERATING SAID FUNDAMENTAL FREQUENCY, MEANS CONNECTED TO RECEIVE AN OUTPUT FROM THE FREQUENCY-STABILIZED OSCILLATOR FOR MULTIPLYING THE SAME IN FREQUENCY AND HAVING A PAIR OF SEPARATE OUTPUTS, A MIXING STAGE CONNECTED TO AN OUTPUT OF SAID CONTROLLABLE OSCILLATOR AND ONE OUTPUT OF SAID MULTIPLYING MEANS, WITH SAID MULTIPLIED FREQUENCY OF SAID ONE OUTPUT SIFFERING FROM THAT OF THE CONTROLLABLE OSCILLATOR BY THE INTERMEDIATE FREQUENCY, AN INTERMEDIATE FREQUENCY AMPLIFIER CONNECTED TO AN OUTPUT OF SAID MIXING STAGE AND TUNED TO THE INTERMEDIATE FREQUENCY, A FREQUENCY DISCRIMINATOR CONNECTED TO SAID INTERMEDIATE FREQUENCY AMPLIFIER, MEANS FOR ADJUSTING THE FREQUENCY OF SAID CONTROLLABLE OSCILLATOR TO ITS PROPER FREQUENCY VALUE, MEANS CONNECTING THE OUTPUT OF SAID DISCRIMINATOR TO SAID ADJUSTING MEANS, A SECOND MIXER HAVING ONE INP/UT CONNECTED TO THE OTHER OUTPUT OF SAID MULTIPLYING MEANS AND ANOTHER INPUT CONNECTED TO AN OUTPUT OF SAID CONTROLLABLE OSCILLATOR, AN OUTPUT OF SAID SECOND MIXER CONNECTED TO SAID CONVERTER OF SAID RECEIVER.