AM Radio Receiver

This is the circuit diagram of mini AM Radio receiver.

AM Radio Receiver

All general purpose transistors should work in this circuit, you can use BC549 transistors for this circuit.

The circuit use a compact three transistor, regenerative receiver with fixed feedback. It is similar in principle to the ZN414 radio IC which is now replaced by the MK484. The design is simple and sensitivity and selectivity of the receiver are good.

All connections should be short, a veroboard or tagstrip layout are suitable. The tuning capacitor has fixed and moving plates. The moving plates should be connected to the “cold” end of the tank circuit, this is the base of Q1, and the fixed plates to the “hot end” of the coil, the junction of R1 and C1. If connections on the capacitor are reversed, then moving your hand near the capacitor will cause unwanted stability and oscillation.

AM Radio Receiver PCB Design:

The image below is an actual size (scale= 1:1) copy of the copper layer. Note that this is reverse so the veropins appear now on the left hand side at the top. Remember that this is the lower (solder) side, by viewing the top image you should be able to match up the positions of all components.

AM Radio Receiver PCB

Please visit this page for detail explanation from author, schematic diagram and PCB layout of mini AM Rradio receiver circuit.

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8 thoughts on “AM Radio Receiver

  1. debabrata

    Where I can get the circuit diagram of amplifier UBA800

  2. Michael

    My knowledge of the scheme is from communication with Toneloc on my cell phone in DC.

  3. Piyush

    Here is am transmeter.How to optimize anteena and coil.Radio sound is very weak. How to improve sound level which can listen clearly.Please reply

  4. circuit diagram Post author

    AM transmitter is very rare now. Is there any AM transmitter in your location..?. Or you need to optimize your antenna and the inductors.

  5. Piyush

    Hi i make this circuit but its not working. It is not catch any channel. Please tell what is problem

  6. dibeesh

    am circuit diagram and software for stimulation of radio frequencies will more familiar to beginers of the field different frequencies and its applications too

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