Multiplex Radio Devices (2GHz/FM) (1957)

These devices used the method of FM (frequency modulation), and were the first multiplex radio devices delivered by Fujitsu to the Nippon Telegraph and Telephone Public Corporation.
In 1957, a set of equipment was delivered for the 2-GHz short-range line between Nagoya and Takayama.

PPM Radio Devices(1956)

10-Series Multiplex Radio Equipment(1976)