Doing so was the equivalent of putting 5 lbs. of groceries in a 3 lb. bag. Zenith delayed the release of the H500, and was prepared to ship the radios with 1LA6 tubes if need be.

In 1938 Zenith released several models of 12-tube table radios with what Zenith referred to as their “Robot Dial.” The Zenith robot dial was equipped with a tuning eye tube that indicated signal ...

The tonal quality is superb, with various buttons for voice, music, etc. The result is an audio clarity rare in an AM radio, even today. Although the Trans-Oceanic name lived on for several years in ...