Francis M. Ryan, 87, a retired official of the American Telephone & Telegraph Co. who was a vice president and director of engineering at the Page Communications company from 1960 to 1962, died of arteriosclerosis June 24 at Northern Virginia Doctors Hospital.

Mr. Ryan, who lived in McLean, was born in Seattle. He graduated from the University of Washington and joined the Western Electric Co., a division of AT&T, in New Jersey in 1920. He later worked for the Bell Telephone Laboratories, where he specialized in radio telephone links. He represented AT&T at many international radio conferences.

During World War II, he worked on the development of sonar, a system used in anti-submarine warfare. After the war, he supervised construction of AT&T's first transcontinental microwave radio relay system for television broadcasts. He retired in 1960 and moved to McLean when he joined Page Communications.

Mr. Ryan was a member of the Veteran Wireless Operators Association and received its Marconi Medal of Achievement. He was a fellow of the Institute of Radio Engineers and the Institute of Electrical and Electronics Engineers.

Survivors include his wife, the former Irene B. Lambert of McLean; two children, Della R. Walsh of Makaha, Hawaii, and James F. of Flemington, N.J.; three grandchildren, and one great-grandchild.