Five silicon point contact diodes
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Five silicon point contact diodes: Marconi crystal detector used in 352A marine receiver ( 1930's); BTH CS2-A used in radar receivers (c.1940); Kemtron 1N21B used in radar receivers (c.1940); BTH CV1844 used in radar receivers (c.1940); Microwave MA462 used in radar receivers (c.1944);
