Identifier2000-06-20_image_045SourceThe William P. and Moya Olsen Lear Papers (2000-06-20), Box 3, Folder 8DescriptionPhotograph 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).
[Learadio aircraft communications system], [2000-06-20_image_045]. Museum of Flight Digital Collections, accessed 14/02/2026, https://digitalcollections.museumofflight.org/nodes/view/4693