Browse Items (62 total)

Learadio aircraft radio equipment [pamphlet]
Pamphlet about Learadio aircraft radio equipment, circa 1930s. Contains technical specifications and images of various models of transmitters, receivers, power supplies, and accessories. 41 pages.

[Learmatic navigator]
Photograph of a Learmatic navigator, circa 1940s.Inscription: "Learmatic navigator combining directional gyro with adjustable [illegible] and automatic and/or manual loop [rotator?]."

[Learadio portable receiver]
Photograph of a Learadio portable receiver, circa 1930s-1940s.Inscription: "Portable 2-band battery-operated receiver used thru-out WW2 by many USAF [personnel?] here and all over world."

[Learadio Model RCB receiver tuning unit]
Photograph of a Learadio Model RCB receiver tuning unit, circa 1930s-1940s.

[Learadio radio compass tuning unit]
Photograph of a Learadio radio compass tuning unit, circa 1930s-1940s.

[William P. and Moya Olsen Lear Papers, Box 4, Folder 30 - "Descriptive specifications of Learadio Lear-O-Scope Model LC 100 Radio Compass Direction Finder," circa 1931-1939]
Items from Box 4, Folder 30 of the William P. and Moya Olsen Lear Papers, circa 1931-1939. Contains two reports related to the Learadio Lear-O-Scope Model LC 100 Radio Compass Direction Finder.

[Aircraft instrument panel outfitted with Learadio equipment]
Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939. Two arrows point to the direction indicator and the interphone and radio transmit control switch.Inscription: "NA-44 / Learadio equipment installation /…

[Aircraft cockpit outfitted with Learadio equipment]
Photograph of an aircraft cockpit outfitted with Learadio equipment, circa 1931-1939. Arrows point to the microphone and support and the interphone and radio transmit control and jack box.Inscription: "NA-44 / Learadio equipment installation / Rear…

[Aircraft instrument panel outfitted with Learadio equipment]
Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939.

[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."
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