Search Digital Records

• Subject > Radio--Transmitters and transmission (remove)
• Subject > Learadio (remove)
• Rights > Copyright undetermined (remove)

Limit your search

• Still Image (1)

• photographic prints (1)

• Copyright undetermined (1)

• Aids to air navigation (1)
• Lear Developments (1)
• Learadio (1)
• Radio in aeronautics (1)
• Radio--Transmitters and transmission (1)

1 results

[Learadio aircraft communications system] (Item)

Photograph of a Learadio aircraft communications system, circa 1931-1939. Specific devices pictured include the Model MOPA transmitter (emitator acord unit) and Model R2BB receiver (receptive accord unit).Caption: "Typical aircraft communication system."