Multiple-Channel Telephony on VHF Radio Links

This paper describes a single-sideband multiplexing system which has brought multiple-channel radio telephony into a new economic range for toll-circuit use. Problems of interchannel modulation and noise have been solved with simple, economical carrier and radio equipment. While this paper is concerned primarily with the multiplexing method, sufficient specifications on the radio transmitter and receiver are included to permit comprehension of the system as an integrated whole.