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[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 automatic direction finder]
Photograph of a Learadio automatic direction finder, circa 1940.Inscription: "Manual loop antenna rotator and directional indicator. 1940."
[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 installation / Front and rear cockpit -- Right side. 20-1171-27." Labeled components: "Direction indicator panel -- Rear cockpit. Automatic compass and…
[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 panel assembly. 201171/25."
[Learadio equipment installed in front cockpit]
Photograph of Learadio equipment installed in the front cockpit of an unidentified aircraft, circa 1940s-1950s. Several of the components are labeled.Caption: "NA-44 / Learadio equipment / Front cockpit -- Right side. 20-1171-28."Labeled components: "Shock-mounted radio equipment support panel. Excess cable. Primary filter."
[Lear C-2A autopilot]
Photograph of a Lear C-2A autopilot, circa 1940s-1950s. Typed caption: "The C-2A - greatly improved original autopilot."
[Instrument panel in aircraft cockpit]
Photograph of the instrument panel in an unidentified aircraft cockpit, circa 1920s-1940s. A Lear Radio-Aire is installed.
The most famous airport in the world -- Historic Roosevelt Field [map]
Lithographic map of Roosevelt Field, Long Island, New York, circa 1931-1939. Several locations are noted on the map, including Learadio Laboratories (location "J").