Anritsu

In Japan, Anritsu's first predecessor, Sekisan-sha, was founded in 1895. Annaka Electric Company followed, producing wireless transmitters and the world's first wireless telephone service and Japan's first automatic public telephone.

Anritsu Corporation was formed with the merger of two companies, the Annaka Corporation and Kyoritsu Electric in Japan in 1931. In 1990, Anritsu acquired Wiltron Company in the United States for $180 million.

Currently, the Anritsu Group is composed of Anritsu Corporation, Anritsu Engineering, Anritsu Infivis, Anritsu Devices, and Anritsu Networks. Anritsu Corporation's American subsidiary, Anritsu Company, is a supplier of the United States Department of Defense.

Products include network call trace, service assurance, customer experience management, microwave, radio frequency (RF), and optical signal generators, spectrum analyzers, and network analyzers.