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• Subject > Aids to air navigation (remove)
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• Still Image (41)

• photographic prints (41)
• composite photographs (4)

• Copyright undetermined (41)

• Aids to air navigation (41)
• Radio in aeronautics (34)
• Learadio (27)
• Lear Developments (20)
• Radio--Transmitters and transmission (16)
• Antennas (Electronics) (5)
• Automatic pilot (Airplanes) (5)
• Lear, Inc. (5)
• Radio direction finders (4)
• Airplanes--Cockpits (3)
• Fisher, Herbert O. (3)
• Lear Avia Corporation (3)
• Lear, William P. (William Powell), 1902-1978 (3)
• Canada. Royal Canadian Air Force (1)
• Douglas DC-3 Family (1)
• MacRobertson International Air Race (1934) (1)
• Nichols, Nichols, Reeder Glen, 1904-1975 (1)
• Ontario. Department of Lands and Forests. Forestry Branch (1)
• Pangborn, Clyde Edward, approximately 1893-1958 (1)
• Turner, Roscoe, 1895-1970 (1)
• United States. Army. Signal Corps (1)

41 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."

[Learmatic navigator] (Item)

Photograph of a Learmatic navigator, circa 1940s.Inscription: "Learmatic navigator combining directional gyro with adjustable [illegible] and automatic and/or manual loop [rotator?]."

[Learadio automatic direction finder] (Item)

Photograph of a Learadio automatic direction finder, circa 1940.Inscription: "Manual loop antenna rotator and directional indicator. 1940."

[William P. Lear showing LIFE indicators to Herbert O. Fisher] (Item)

Photograph of William P. Lear showing LIFE (Lear Integrated Flight Equipment) indicators to Herbert O. Fisher, circa 1958. An unidentified Lear, Incorporated company aircraft is visible behind them. A copy of the image is attached to the verso, along with a typed caption explaining that the picture will appear in the June issue of "Skyways" magazine. Typed caption on verso: "Learcal's 'LIFE'…

[William P. Lear showing LIFE indicators to Herbert O. Fisher] (Item)

Photograph of William P. Lear showing LIFE (Lear Integrated Flight Equipment) indicators to Herbert O. Fisher, circa 1950s. An unidentified Lear, Incorporated company aircraft is visible behind them. Typed caption on verso: "Automatic flight ---- W. P. Lear, Chairman of the Board of Lear, Inc., chats with Herbert O. Fisher, Port of New York Airport, Chief of Aviation Development Division,…

[Learadio equipment installed in front and rear cockpits] (Item)

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…

[Display for Lear F-5 autopilot] (Item)

Photograph of a display for the Lear F-5 autopilot, showing various components, circa 1940s-1950s. Typed caption on verso: "The F-5 Autopilot was developed by Bill Lear in the 1940's for which he was awarded the Collier Trophy. Pictured clockwise are the follow-up, servo drive, control, and capstan. The F-5 Autopilot has enabled safely landing high performance jet aircraft regardless of weather…

[Learadio panel assembly] (Item)

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."

[Display for LIFE system] (Item)

Photograph of a display for the LIFE (Lear Integrated Flight Equipment) system, circa 1950s-1960s. The display board reads: "Fly LIFE here / Any pilot can make an accurate ILS approach on his check-out flight -- makes all IFR flight unbelievably easier!" Inscription on verso: "2495-4."

[Learadio equipment installed in front cockpit] (Item)

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."