This two transistor AM radio circuit is also called "mini-radio". It uses only 2 transistors and few passive components which makes is very easy to be
AM radio receiver a Schematic circuit diagram of AM radio receiver
Create radio receiver circuits with the LM386 audio amplifier - EDN Asia
Two transistor AM radio receiver circuit
Two-Transistor AM Radio (MIN068E)
Yet Another Simple MW Receiver, Details
Vol. III - Semiconductors - Practical Analog Semiconductor Circuits - Radio Circuits
Low cost simple AM receiver circuit designed based on IC MK484 .
How to Create a Simple AM Radio (with Pictures) - wikiHow
AM Receiver Circuit
AM Radio Receiver with Three BC548 Transistors