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In the 1930s some radios were manufactured using Catalin, which is the phenolic resin component of bakelite, with no organic filler added, but nearly all historic bakelite radios are the standard black-brown bakelite color. Bakelite as used for radio cabinets was traditionally brown, and this color came from the ground walnut shell flour added ...
1910s • 1920s • 1930s • 1940s • 1950s • 1960s • 1970s • 1980s • 1990s • 2000s • 2010s • 2020s United States aircraft of the 1930s Military: Anti-submarine aircraft • Attack • Bomber • Electronic warfare • Experimental • Fighter • Patrol • Reconnaissance • Trainer • Transport • Utility
Majestic radios from the Grigsby-Grunow halcyon era of the late 1920s–early 1930s have become antique radio collectors' items, prized for their craftmanship and appearance. [ 49 ] [ 50 ] Some models, such as the Art Deco -styled model 161 produced in 1933, have been fully restored.
This is a list of airlines by foundation date, founded before December 31, 1930.. The date of the first airline service may differ from the foundation date. Bold names and a light-green background indicate that the airline is still in operation, while light-yellow indicates a disputed claim.
1910s • 1920s • 1930s • 1940s • 1950s • 1960s • 1970s • 1980s • 1990s • 2000s • 2010s • 2020s. Civil aircraft of the 1930s. Business ...
Braniff pilots outside a "B-Liner" Lockheed Model 10 Electra, Houston Hobby Airport, 1940.In the background is a Lockheed Model 12 Electra Junior.. Unable to remain out of the airline business for very long and with the new possibility of an air mail contract, the Braniff brothers started a new airline in November 1930 named Braniff Airways, Inc. Braniff Airways began service among Oklahoma ...
Collins Radio became a world leader in avionics during the 1950s and 1960s. The 618T HF transceiver was a mainstay for the airlines and the ARC-27, with automatic tuning and 1750 channels, was the first practical UHF military transceiver, in service for over two decades. [12] [13]
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