Browse Items (1093 total)
- Collection: William P. and Moya Olsen Lear Papers
[William P. and Moya Olsen Lear Papers, Box 4, Folder 3 - Learadio AMRL-1 marine radio direction finder, Learadio compass, Learadio T30 aircraft transmitter, Learadio R3 aircraft receiver, 1937-1938]
![[William P. and Moya Olsen Lear Papers, Box 4, Folder 3 - Learadio AMRL-1 marine radio direction finder, Learadio compass, Learadio T30 aircraft transmitter, Learadio R3 aircraft receiver, 1937-1938]](https://digitalcollections.museumofflight.org/files/square_thumbnails/0eab719e9aeaed91352f1e7ab8415b79.jpg "[William P. and Moya Olsen Lear Papers, Box 4, Folder 3 - Learadio AMRL-1 marine radio direction finder, Learadio compass, Learadio T30 aircraft transmitter, Learadio R3 aircraft receiver, 1937-1938]")
Items from Box 4, Folder 3 of the William P. and Moya Olsen Lear Papers, circa 1937-1938. Contains an advertisement for the Learadio Compass, an advertisement for the Learadio AMRL-1 Marine Radio Direction Finder, and a brochure for Learadio…
[William P. and Moya Olsen Lear Papers, Box 4, Folder 6 - "Learadio Airport Localizer (L-P-2)", 1939 September - October]
![[William P. and Moya Olsen Lear Papers, Box 4, Folder 6 - "Learadio Airport Localizer (L-P-2)", 1939 September - October]](https://digitalcollections.museumofflight.org/files/square_thumbnails/e81ccbee196527f90446f9af824e8076.jpg "[William P. and Moya Olsen Lear Papers, Box 4, Folder 6 - "Learadio Airport Localizer (L-P-2)", 1939 September - October]")
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,…
[William P. and Moya Olsen Lear Papers, Box 4, Folder 22; Box 205, Folder 1; Box 209, Folder 1 - Unihand reel and ARL-48 motor reel -- diagrams [RM files], 1938-1939]
![[William P. and Moya Olsen Lear Papers, Box 4, Folder 22; Box 205, Folder 1; Box 209, Folder 1 - Unihand reel and ARL-48 motor reel -- diagrams [RM files], 1938-1939]](https://digitalcollections.museumofflight.org/files/square_thumbnails/88e1aa0325dd03cf597f9a2aad7a6a36.jpg "[William P. and Moya Olsen Lear Papers, Box 4, Folder 22; Box 205, Folder 1; Box 209, Folder 1 - Unihand reel and ARL-48 motor reel -- diagrams [RM files], 1938-1939]")
Items from Box 4, Folder 22; Box 205, Folder 1; and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, circa 1938-1939. Contains diagrams related to Unihand reel and ARL-48 motor reel. Seven total items.
[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August]
![[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August]](https://digitalcollections.museumofflight.org/files/square_thumbnails/524a75873758bf9b9cdf4e4101a5c6ee.jpg "[William P. and Moya Olsen Lear Papers, Box 4, Folder 27 - "Blind approach by voice," 1939 August]")
Items from Box 4, Folder 27 of the William P. and Moya Olsen Lear Papers, August 1939. Includes eight pages of handwritten notes and sketches related to "Blind approach by voice," an airplane landing system.
[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]
![[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]](https://digitalcollections.museumofflight.org/files/square_thumbnails/521aabda6caa23da8c6eaab326b1db9c.jpg "[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.
[William P. and Moya Olsen Lear Papers, Box 4, Folder 23; Box 200, Folder 1; Box 209, Folder 1 - ADF-6 and ADF-7 -- notes and diagrams [RM files], 1939 February - 1940 March]
![[William P. and Moya Olsen Lear Papers, Box 4, Folder 23; Box 200, Folder 1; Box 209, Folder 1 - ADF-6 and ADF-7 -- notes and diagrams [RM files], 1939 February - 1940 March]](https://digitalcollections.museumofflight.org/files/square_thumbnails/bd966303e3515535eafe85244e06f44c.jpg "[William P. and Moya Olsen Lear Papers, Box 4, Folder 23; Box 200, Folder 1; Box 209, Folder 1 - ADF-6 and ADF-7 -- notes and diagrams [RM files], 1939 February - 1940 March]")
Items from Box 4, Folder 23; Box 200, Folder 1; and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, February 1939 to March 1940. Contains notes and diagrams related to ADF-6 and ADF-7 automatic direction finders. 11 total items.
[Aircraft instrument panel outfitted with Learadio equipment]
![[Aircraft instrument panel outfitted with Learadio equipment]](https://digitalcollections.museumofflight.org/files/square_thumbnails/aac61df7a945933fc7f70761523c6a21.jpg "[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]
![[Aircraft cockpit outfitted with Learadio equipment]](https://digitalcollections.museumofflight.org/files/square_thumbnails/7dbca97facd009a513160ca3b24c2ab3.jpg "[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]
![[Aircraft instrument panel outfitted with Learadio equipment]](https://digitalcollections.museumofflight.org/files/square_thumbnails/0958e47eab53eb1ab74f420e6c530b57.jpg "[Aircraft instrument panel outfitted with Learadio equipment]")
Photograph of an aircraft instrument panel outfitted with Learadio equipment, circa 1931-1939.
[Man using Learadio portable marker transmitter]
![[Man using Learadio portable marker transmitter]](https://digitalcollections.museumofflight.org/files/square_thumbnails/1747a022b1220bdb5ce60a84918e2cd6.jpg "[Man using Learadio portable marker transmitter]")
Photograph of a man using a Learadio portable marker transmitter in an open field, circa 1931-1939.Inscription: "First completely portable outer or inner marker transmitter for radio compass [illegible]."