Delay Equalization of Eight-Kilocycle Carrier Program Circuits

This paper describes the equalization of delay in 8-kc program systems transmitted over broad-band carrier telephone facilities. Use is made of a condenser-plate potential analog which provides a ready method for blocking out the basic design and arriving at the final equalizer constants. Most of the equalization is accomplished at audio frequencies, and the remainder at carrier frequencies with quartz-crystal equalizers.