Sonar Throwback: Reginald Fessenden and the Fathometer

1912: Sonar - The book of science

Men Who Made Radio: Reginald A. Fessenden, January 1930 Radio-Craft - RF Cafe

Global Leader of Innovative Marine Electronics Technology

Best Boating and Fishing Electronics for Visual Navigation

Best Boating and Fishing Electronics for Visual Navigation

World's first radio voice broadcast from Mass. coast in 1906

World's first radio voice broadcast from Mass. coast in 1906

Reginald Fessenden The Canadian Encyclopedia

Reginald Fessenden: The Father of Radiotelephony - Interesting Engineering