Rare, Navy J. F. Arnold Loose Coupler Radio from the early 1900’s. Circa WWI
This item is a vintage early 20th-century wireless radio loose coupler tuner, sometimes known as a receiving transformer. ¿. This specific model appears to be a “Navy” type, frequently manufactured by companies like J. Arnold in the early 1900s. ®. It features a wooden base and ends with a metal dial, knobs, and sliding mechanism. ®. They were commonly used in conjunction with a crystal detector to form a complete radio receiver.