Abstract: A system for using phase modulated information carried by a pilot tone generated in the transmitter of a frequency hopping communications system to synchronize the receivers dehop schedule generator with the transmitter's hop schedule generator.

Abstract: A search and confirm frequency synthesizer for generating an output frequency which is a multiple of a predetermined reference frequency is disclosed. A first means is provided for generating a reference frequency signal. A second means is provided for generating a comparison frequency signal. A first spectrum generator means is coupled to the first means and produces a plurality of harmonics of the reference frequency signal. A second spectrum generator means is coupled to the second means and produces a plurality of harmonics of the comparison frequency signal. Means including a phase-locked loop and feedback and control circuitry is operatively coupled to the first and second spectrum generator means for controlling the operation of the phase-locked loop to produce an output signal having a frequency equal to a selected harmonic of the reference frequency signal.