Junior 1 from Stampfl

17:32 Fernando Luiz de Souza 0 Comments





http://www.heinzstampfl.ch/en/


 http://www.heinzstampfl.ch/wp-content/uploads/2014/12/junior1_assemblyguide.pdf


Junior 1 is a quick and easy to assemble shortwave receivers in dual-conversion technology. 

Special measuring equipment or knowledge of the high-frequency are neither required. Junior 1 is intended as a small project for the young and young at heart who are interested in radio technique.

At the heart, an AM / FM IC used in former east Germany (A4100D) that was developed specifically for battery-powered devices. According to the data, the A4100D is characterized by a particularly favorable signal / noise ratio of AM and FM part and requires only a small external circuitry. As a front-end mixer and oscillator of the proven NE612 is used.

Click to enlarge





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