Radio Receiver with CI 741
This experimental radio work in AM Band . The headfhone(FONE) is magnetic and impedance more a less 1K -2K. L1 coil have a primary with 10 turns(VOLTAS) 28 wire, rolled on a secondary of 80 turns(Voltas) rolled in ferrite width 10cm x1cm. CV is a common capacitor in AM radios.