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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."
Learadio in rectangular brown wood case. Display at top with frequency range 55 - 160 in beige and green, with "Learadio." 2 brown plastic knobs at bottom. At center is a mesh brown fabric with gold thread accents covered speaker.Marks: "Learadio."Part/Serial number: "Model 561."
Portable radio has mahogany wood case with olive green metal along top. Has face and dials along top. Frequency range has broadcast band, marine band and beacon. Tuning area has broken plastic cover. Top has two knobs and two selectors. Two plugs and leather strap at top. Front has olive green metal mesh-covered speaker. Back lifts open with labels inside.
Marks: "Model P-10A, Serial No. 00829 115…