New York City's Postal Radio manufactured communication receivers and accessories such as pre-selectors in the mid-1 930s. The 10-tube Model 35 covered 0.55-23 MHz using three-gang plug-in coils. The coils could be switched to provide either band spread or general coverage.
References
Brief description. Radio News, Nov 1934, p. 312.
Technical description. Radio Craft, Dec 1934. p. 349.
