Browse Items (14 total)

[Learadio T-30 and R-3 equipment]
Photograph of a Learadio T-30 R3 radio system and assorted components, circa 1935-1939. The inscription notes that this equipment was developed especially for pilots operating in Alaska.Inscription: "Learadio T-30 R3. Saved many lives and much money…

[Loop antenna in workshop]
Photograph of a shielded loop antenna in a workshop, circa 1931-1939.

[Men working with Lear devices and a loop antenna]
Photograph of three men working with Lear devices and a loop antenna, circa 1931-1939.

[Model L Lear-o-Scope and loop antenna]
Photograph of a Model L Lear-o-Scope and loop antenna, circa 1936-1939. The verso inscription, which was written by William P. Lear, describes the device and its development.Inscription on verso: "Note left crank changed bands and moved mash on dial…
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