| Size Type/Largest Dimension | Medium (Up to 30in.) |
|---|---|
| Signed | Unsigned |
| Color | Brown, Black |
| Style | Primitive |
| Original/Reproduction | Original |
| Theme | Militaria |
| Material | Wood, Metal |
| Country of Origin | United States |
Check the listing for details. Rare , Navy J.F. Arnold Loose Coupler Radio from the early 1900’s. Circa WWI. Color: Brown, Black, Condition: Used, Made in United States. Listed at 380.00 USD. This item is a vintage early 20th-century wireless radio loose coupler tuner, sometimes known as a receiving transformer. © • It functioned as an RF tuner to crudely select radio signals. ¿ • This specific model appears to be a "Navy" type, frequently manufactured by companies like J.F. 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