Browse Items (13 total)
- Subject is exactly "Radio direction finders"
[Audio recording of William P. Lear discussing his life story (Part 3 of 3)]
![[Audio recording of William P. Lear discussing his life story (Part 3 of 3)]](/application/views/scripts/images/fallback-audio.png "[Audio recording of William P. Lear discussing his life story (Part 3 of 3)]")
Audio recording of William P. Lear discussing his life story, Geneva, Switzerland, circa 1960s. Part 3 of 3.
Handwritten label on reel: "Tape 3 and 4 - 7-62. Digital preservation 7-27-99. Bio 30-40s. AIFF-Format. WPL audio."
Inscription on back of…
Learadio notes on direction finding!
Notes written by William P. Lear about the utility of automatic direction finders, circa 1940. Describes a flight from New York to Dayon, Ohio in Lear's Waco aircraft and how a Lear ADF-8 helped him navigate despite static from a thunderstorm.…
[Learadio equipment installed in front and rear cockpits]
![[Learadio equipment installed in front and rear cockpits]](https://digitalcollections.museumofflight.org/files/square_thumbnails/cbb928862de98d900b289c5e71599253.jpg "[Learadio equipment installed in front and rear cockpits]")
Photograph of an unidentified aircraft fuselage with its side panel removed, showing the Learadio equipment installed in the front and rear cockpits, circa 1940s-1950s. Several of the components are labeled.
Caption: "NA-44 / Learadio equipment…
[Learadio panel assembly]
![[Learadio panel assembly]](https://digitalcollections.museumofflight.org/files/square_thumbnails/df55d769581ac296db7e9d032579890d.jpg "[Learadio panel assembly]")
Composite photograph of Learadio panel assembly, showing side and front views, circa 1940s-1950s. Individual components include a fixed antenna tuning unit, trasmitter, automatic direction finder, and control unit.Caption: "Front view / NA-44 /…
[Learadio automatic direction finder]
![[Learadio automatic direction finder]](https://digitalcollections.museumofflight.org/files/square_thumbnails/40a780ec228b1e42ce8797d78a891fc5.jpg "[Learadio automatic direction finder]")
Photograph of a Learadio automatic direction finder, circa 1940.Inscription: "Manual loop antenna rotator and directional indicator. 1940."
[Douglas DC-3 instrument panel with Learadio ADF 8]
![[Douglas DC-3 instrument panel with Learadio ADF 8]](https://digitalcollections.museumofflight.org/files/square_thumbnails/179aae73a33928572632ca59dcf7f3ff.jpg "[Douglas DC-3 instrument panel with Learadio ADF 8]")
Photograph of a Douglas DC-3 instrument panel with a Learadio ADF 8 automatic direction finder, circa 1940s. The direction finder and two gauges are circled and numbered. Inscription on verso: "Copy of instrument panel (Chicago and [illegible]…
[William P. and Moya Olsen Lear Papers, Box 17, Folder 1; Box 209, Folder 2 - "Directional radio system (Case 17-2)" -- patent application [RM files], 1940]
![[William P. and Moya Olsen Lear Papers, Box 17, Folder 1; Box 209, Folder 2 - "Directional radio system (Case 17-2)" -- patent application [RM files], 1940]](https://digitalcollections.museumofflight.org/files/square_thumbnails/330994a0de73cd39fd3d8f009d197f98.jpg "[William P. and Moya Olsen Lear Papers, Box 17, Folder 1; Box 209, Folder 2 - "Directional radio system (Case 17-2)" -- patent application [RM files], 1940]")
Items from Box 17, Folder 1 and Box 209, Folder 2 of the William P. and Moya Olsen Lear Papers, circa 1940. Contains patent applications, technical drawings, notes, and photographs related to the directional radio system. Many of the documents were…
[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]
![[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]](https://digitalcollections.museumofflight.org/files/square_thumbnails/391d457919bc96611826fb4a8a7cea67.jpg "[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]")
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.
[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]
![[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]](https://digitalcollections.museumofflight.org/files/square_thumbnails/2e98a4fb365ad043b561f20cea7fc419.jpg "[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]")
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…
[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.