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• Subject > Radio--Transmitters and transmission (remove)

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• Radio--Transmitters and transmission (8)
• Radio in aeronautics (6)
• Aids to air navigation (5)
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8 results

[Brochure for Learadio Model T30-R3AB aircraft transmitter-receiver] (Item)

Brochure for the Learadio Model T30-R3AB aircraft transmitter-receiver, circa 1939.

[Brochure for Learadio Model UT-6 radio transmitter] (Item)

Brochure for the Learadio Model UT-6 radio transmitter, circa 1939.

[Learadio aircraft communications system] (Item)

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."

Radio/Learadio, A-61291, Red Wooden Casing (Item)

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."

Receiver, Radio/Learavian P-10A, portable (Item)

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…

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 4, Folder 6 - "Learadio Airport Localizer (L-P-2)", 1939 September - October] (Item)

Items from Box 4, Folder 6 of the William P. and Moya Olsen Lear Papers, September to October 1939. Folder contains assorted items related to the Learadio Airport Localizer (L-P-2), including summaries, correspondence, diagrams, sketches, a clipping, and a Library of Congress certificate of copyright. 14 total documents and original folder labeled "L-p2 / 'Learadio Airport Localizer.'"

[William P. and Moya Olsen Lear Papers, Box 18, Folder 1 - "Radio automatic guidance system (Case 31-3) and loop antenna system (Can 8-1)," 1940-1943] (Item)

Items from Box 18, Folder 1 of the William P. and Moya Olsen Lear Papers, circa 1940-1943. Contains a patent application and other documents related to the Radio Automatic Guidance System (Case 31-3) and Loop Antenna System (Can. 8-1), as well as a manual titled "The Lear-Matic: The ultimate instrument for aircraft navigation." 15 total documents.