WCAU-AM/WPHT-AM transmitter site in Moorestown, New Jersey.

This station had been sending CBS Radio programming ever since CBS’s founding in 1927, the shortwave sibling of WCAU-AM W3XAU (later given the commercial call letters WCAI, and even later-WCAB) was located at this site until it to Camp X in the province of Ontario in Canada to become a part of the Hydra signals intelligence and communications program.

CBS had purchased WCAU-AM-FM-TV outright in 1957.