Patent ID: 7587017

Claim:
An apparatus, comprising: a first multichannel receiver for detecting the phase of a reference signal; a first phase comparator coupled to the first multichannel reference signal receiver; a first voltage-controlled oscillator coupled to the first phase comparator; a first amplitude-modulated radio-frequency output coupled to the first voltage-controlled oscillator; a second multichannel receiver for detecting the phase of a reference signal; a second phase comparator coupled to the second multichannel reference signal receiver; a second voltage-controlled oscillator coupled to the second phase comparator; and a second amplitude-modulated radio-frequency output coupled to the second voltage-controlled oscillator, wherein the first amplitude-modulated radio-frequency output and the second amplitude-modulated radio-frequency output provide a group of co-channel signals whose carrier frequencies and phases thereof are synchronized to: (a) substantially eliminate audible and sub-audible beats between a local desired station's carrier signal and one or more interfering stations' carriers; and (b) substantially reduce distortion effects in the signals as received in the coverage area overlapped by the two or more signals.