If you were a British motorist and radio enthusiast 75 years ago, putting a radio in your car was a do-it-yourself project, thanks to this five-tube superheterodyne medium-wave receiver shown in the January 1951 issue of Practical Wireless. There was nothing novel about the circuit, and it probably wouldn’t pull in a lot of foreign stations. But for entertainment and information from local stations, it would serve well. A vibrator power supply was on a separate chassis, which employed a sixth tube, the rectifier.