Browse Items (63 total)

[Learadio Type TR-50 transmitter]
Photograph of a Learadio Type TR-50 transmitter, showing views of the internal components and the external case, circa 1931-1939.Typed caption on verso: "T. Shows the original effort to make a more powerful transmitter by using tubed in parallel.…

[Learadio combination motor generator and transmitter]
Composite photograph of a Learadio combination motor generator and transmitter, showing views of the internal components and the external case, circa 1935-1937. The verso caption states that this was one of the first transmitting devices for private…

[Learadio radio and navigation equipment]
Photograph of Learadio radio and navigation equipment, consisting of a transmitter, receiver, and direction finder, circa 1936-1939. The verso caption notes that this equipment was developed by "myself" (William P. Lear) and Reeder Nichols for the…

[Lear Developments aircraft transmitter]
Photograph of a Lear Developments aircraft transmitter, circa 1931-1939. The verso caption notes that this transmitter was developed for the Flight International Corporation and describes the device's components and specifications.Typed caption on…

[Learadio T-40 transmitter]
Photograph of a Learadio T-40 transmitter, circa 1935-1939. Inscription: "T40 6 freq. transmitter designed for D.O.C. (FAA). 1935."

[Learadio R3AB receiver]
Photograph of a Learadio R3AB receiver, circa 1937-1939. Inscription: "Ground station designed for foreign use 1937-193[cut off]."

[Learadio airport telephone transmitter]
Photograph of a Learadio airport telephone transmitter, circa 1931-1939. Inscription: "This 15-watt power transmitter was habitually able to work aircraft 250 miles away. Freq. 278 kc."

[William P. Lear holding Lear Radio-Aire]
Photograph of William P. Lear holding the Lear Radio-Aire, Chicago, Illinois, circa 1932. Inscription: "The first Radio Aire / Bill / 1932."Inscription on verso: "Bill Lear + his first airplane radio, the Lear Radio-Aire. Chicago, 1932. Photo…

Radio/Learadio, 7-13-010, Model 561, 1946
Learadio in rectangular brown wood case. Display at top with frequency range 55 - 160 in red, yellow and green, with "Learadio." 3 white plastic knobs at bottom. At center is a mesh golden brown fabric-covered speaker.

[Advertisement poster for Learadio aircraft equipment]
Advertisement poster for Learadio aircraft equipment, circa 1931-1939.
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