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• Subject > Aids to air navigation (remove)
• Subject > Radio in aeronautics (remove)

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• Mixed Materials (2)
• Still Image (2)
• Text (1)

• photographic prints (2)
• booklets (1)
• pamphlets (1)
• patents (1)
• speeches (documents) (1)
• technical drawings (1)

• In copyright (3)
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• Aids to air navigation (5)
• Radio in aeronautics (5)
• Learadio (3)
• Radio--Transmitters and transmission (2)
• Aviation Writers Association (1)
• Inventions (1)
• Lear Avia, Inc. (1)
• Lear Developments (1)
• Lear, Inc. (1)
• Lear, William P. (William Powell), 1902-1978 (1)
• MacRobertson International Air Race (1934) (1)
• Nichols, Nichols, Reeder Glen, 1904-1975 (1)
• Pangborn, Clyde Edward, approximately 1893-1958 (1)
• Radio direction finders (1)
• Turner, Roscoe, 1895-1970 (1)

5 results

[Learadio portable receiver] (Item)

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 radio and navigation equipment] (Item)

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 London to Melbourne Air Race.Caption on verso: "S. This is the equipment that was built up in the 60 days in our organization at 123 W. 17th St. NYC, by…

Learadio aircraft radio equipment [pamphlet] (Item)

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.

[William P. and Moya Olsen Lear Papers, Box 50, Folder 11 - "Aviation radio before, during, and after the war" -- WPL speech, 1945 March 7] (Item)

Items from Box 50, Folder 11 of the William P. and Moya Olsen Lear Papers, March 7, 1945. Contains a typed copy of speech delivered by William P. Lear to the Aviation Writers Association and booklet with a slightly edited version of the speech. The speech focuses on Lear's ongoing development of aviation radio devices. Two total documents.

[William P. and Moya Olsen Lear Papers, Box 18, Folder 2; Box 200, Folder 2 - "Radio direction finding system (Case 20-1)" -- patent application [RM files], 1940-1943] (Item)

Items from Box 18, Folder 2 and Box 200, Folder 2 of the William P. and Moya Olsen Lear Papers, circa 1940-1943. Contains documents and drawings related to the patent application of the radio direction finding system (Case 20-1). 24 total items.