![]() ![]() Here is a picture of the inside of the original CR-1.Īnother photo showing the inside of the original Heathkit CR-1. In my opinion, it would have been more logical to have made the center switch for varying the inductance and using a tapped primary coil. It was a double tuned crystal radio from the 1950's with a series tuned primary that had a 365 pf variable capacitor and selectable additional capacitance on the center selector switch. Links Heathkit CR-1 Crystal Radio and Miller 595 Tuner Information This page gives the circuit and pictoral description of the famous Heathkit CR-1 crystal radio. ![]()
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