Frank Massa’s early acoustical work with RCA and his role as the head of their Government Sound Division.

Frank Massa’s work on loudspeakers using rochelle salts distinguishes him and his unique expertise, and results in a call from an old friend who needs help designing the first hydrophone.

Frank Massa’s practical production experience allows him to make an important observation that nobody else saw, earning the trust of Admiral Furer.

A design draftsman with unique experience gives Frank Massa an idea that results in the most successful hydrophone design yet.

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