SCR 694 radio set components and operating accessories are shown. Four canvas bags containing components of SCR 694. A radio engineer opening every bag and showing components and operating accessories including insulator, power cable, generators and vibrator power supply.
Guards of transmitter and receiver units are removed by the radio engineer to show the internal construction and the panel guard of SCR 694 radio set. Transmitter unit is removed. Power cable and connectors are shown. Tube circuit and crystal compartment on transmitter is shown by radio engineer.
Operating receiver unit of SCR 694 radio set shown. Receiver unit is detached from case of SCR 694 radio set by radio engineer. Control system is shown. View of engineer working with hand generator and vibrator power supply unit. Insulator is attached to the case by engineer. View of vertical antenna of SCR 694 radio set in a moving vehicle and a horizontal antenna in fields.
Harry S. Truman sworn in as President of United States of America at White House after the sudden death of Franklin D. Roosevelt. Chief Justice, Harry S. Truman and other dignitaries at White House. United States flag flying at half-mast in honor of the death of Franklin D. Roosevelt. Also views of crowd gathered for the funeral of U.S. President Franklin Roosevelt. Funeral procession moves slowly through streets of Washington DC. Men and women weeping. Funeral parade reaches the final resting place at Hyde Park, New York.
Test flight of a Berliner helicopter by Henry Berliner. A hybrid airplane helicopter built by Emile Berliner and his son Henry Berliner is shown during a Washington DC test flight. It rises and move forward in short hops. The lighter weight design and high incidence large camber lower wing indicates it was likely built in 1924 or 1925 as one of the last Berliner models, following after a triplane version that was test flown in February 1924.
Test of an early helicopter ornithopter aircraft design in Chicago. A helicopter with five rotating blades that turn sideways in a fashion like a paddle boat. Engineer trying to fly a helicopter and is examining the controls from the tail of helicopter. It never leaves the ground.
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