MW Frequency Synchronizing System to Reduce Co-channel Interference : Following Foreign Station's Frequency

Abstract

We have developed and introduced "Frequency Synchronizing System" for our Am broadcasting to reduce Co-channel interference. The carrier beating and the platform-motion are the two embarrassing aspects in listening to an Am broadcasting in existence of the co-channel interference. We have thought up this device with and intention to reduce such harmful phenomena. The frequency difference between the transmitting and the interfering signal is measured at a remote place. The frequency synthesizer at the transmitting station is adjusted according to the measured data so that the transmitting frequency is synchronized to the interfering signal.