Frequency, phase and modulation control system which is especially useful in simulcast transmission systems

摘要: A system enabling the frequency, and if desired, phase control of an oscillator which generates a standard signal useful as carrier is modulated by modulation signals. multiplicity such oscillators associated transmitters may be used in simulcast transmission system. The transmissions originate from station remote transmitters. has controller have transmitter controllers. For frequency reference generated transmitted over same link band width (e.g. voice width) with modulating signals to controllers all At controllers, multiplicities measurements are made statistical values phase, deviations times occurrence collected provide error terms ratio difference time, notwithstanding that jitter amplitude due noise other errors also measured at various include wraps (the being greater than one cycle or 360°.) applied lock thereof predetermined relationship reference. codes representing matched correlation characteristics (delay, gain spectrum) each where correction circuits conditioned process so will characteristics.