Transistor Radios Around the World

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1957 Zenith Royal 500, second version — 7ZT40 chassis series

Coat pocket radio, nylon cabinet
5 3/4 x 3 1/2 x 1 1/2 inches / 146 x 89 x 38 mm
Seven transistors (Zenith ovals, 2N15, 3x 2N35, 2N93, 2N194, 2N216)
Superheterodyne circuit, vernier tuning
Four 1.5-volt AA cells
Manufactured by Zenith Radio Corp.; Chicago, Illinois

The second version of the Zenith Royal 500 — 7ZT40 chassis series: vernier tuning and a printed circuit board were the big changes here.

1957 Zenith Royal 500

1957 Zenith Royal 500, 7ZT40 chassis series


1957 Zenith Royal 500

1957 Zenith Royal 500, 7ZT40 chassis series


1957 Zenith Royal 500

chassis — click on the photo for a larger image

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