Radio a transistor ZENITH ROYAL 500 D E

Brand	Zenith Radio Corp. Chicago, Illinois
Model	Royal 500 - D version / chassis 8AT40Z2
Country	U.S.A.
Year	1958/59
Frequency range	Medium Waves
Transistors	8 (germanium)
Power supply	6V with four batteries 1,5 V - AA type
Measure of the case	9 cm wide; 14 cm tall; 3,7 cm deep.
Overall dimensions	9,5 cm wide; 15,3 cm tall; 3,9 cm deep.
Weight (w/out batt.)	0,460 Kg

Zenith Royal 500, called "owl eyes", was manufactured in many versions which differs in the chassis model and in the case shape.

The first version “A” (chassis 7XT40) has 7 transistor, doesn’t have the printed circuit board and it’s hand-wired; It differs from the other versions by the bars that extend across the volume and tuning knobs and the tuning control is direct made, the knob operates in the variable capacitor shaft.

The B version (chassis 7ZT40), made in 1957, has the printed circuit board and a vernier tuning capacitor.

In 1958/59 was manufactured the D version (chassis 8AT40) which has an extra transistor added to improve reception.

In 1972 Royal 500 was entirely restyled (H version) later manufactured an L version.