Motorola Corporation

Andrew F Peterson

Ronald H Chapman

An improved phase locked loop receiver for use in a simulcast transmission system is disclosed whereby the phase locked loop receiver is used as a means to distribute a common reference frequency to all of the transmitters in a simulcast system. By phase locking the link receivers at each of the simulcast transmitters to the carrier of the link transmitter, a common reference is obtained. This allows each of the synthesized simulcast transmitters to be phase locked to a common reference. The Phase Locked Receiver (PLR) uses a reference frequency derived from the receiver IF frequency. The injection oscillator of the receiver is phase locked to this reference.

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Schaumburg, IL, United States of America

Andrew F Peterson