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Report of Test of Model LD-4 Frequency Measuring Equipment (Redesigned Preliminary Model) Submitted by Bendix Radio Corporation
The equipment was received 21 March and tests were begun 23 March. It was inspected for mechanical construction, wiring, accessibility of parts, types of material employed and general workmanship. The operation of the crystal controlled oscillator and of the heterodyne oscillator were studies with respect to frequency stability with tilting of the equipment, time of operation, change of tubes and variation of line voltage.
Approved For Public Release