National Geographic : 1979 Oct
NEW COMPUTER SPACE COMMAND. NOW THE BEST ZENITH EVER IS EVEN BETTER. The best Zenith ever-System 3. With a Tri-Focus picture tube for the sharpest picture in Zenith history. With a Triple-Plus chassis, designed to be our most reliable ever. With Color Sentry for rich, real color automatically. With Electronic Power Sentry to protect critical components and save energy. And now you can get System 3 with Computer Space Command. The most advanced remote control in Zenith history. Direct access to 105 channels, with the cable TV switch. Precise volume control. Even mute. Plus Zenith's exclusive Zoom for instant close-ups. Plus all Computer Space Command sets are cable-ready. No need for a converter. System 3. The best Zenith ever. Now even better.