Fuhjythy 1 Set 7 Tube AM Radio Electronic DIY Kit Electronic Learning Kit HX108-2 DIY Kit Without Battery Easy to Use

Circuit at all levels have Ic test port. Has been adjusted in the 465KHz. Secondary intermediate standard circuit. The whole machine contains 7 triodes, so it is called a 7-tube radio. Among them, the triode V1 is the frequency conversion tube, the V2 and V3 are the middle discharge tubes, the V4 is the detection tube, the V5 is the low frequency preamplifier tube, and the V6 and V7 are the low frequency power amplifier tubes.