5 Transistor Radio || using only BC547 and BC557

5 Transistor AM Radio Receiver — DIY Medium Wave Radio Build your own AM radio receiver with just 5 transistors! This classic circuit picks up medium wave (MW) radio stations and works on 3V to 4.2V battery. Full Blog Post & Circuit Diagram: https://smelectronics1.blogspot.com/2... Components List: BC547 (NPN) transistor — 3 pcs BC557 / BC557B (PNP) transistor — 2 pcs 1N4148 diode — 1 pc Resistors (5.1k, 330Ω, 1k, 100Ω, 1M, 1.5k, 10-33Ω) Capacitors (220pF variable, 33nF, 0.01µF, 0.1µF, 10µF) Ferrite rod antenna — 1 4 Ω speaker — 1 3V to 4.2V battery — 1