Simple AM Radio Transmitter & Receiver

In this project we will keep it simple when it comes to wireless audio communication. Instead of trying to use an nRF24 or RF modules, we will go back to the old days in which they used AM radios. I will show you how such amplitude modulation works and along the way show you how to build a super simple AM transmitter and receiver. Let's get started!

WARNING: Always check your local law if you want to transmit something with AM! Sending on certain frequencies and thus blocking other licensed transmitters can be illegal. So if you want to try it then make sure that the transmission power is super low. In my example the transmitter was only capable of sending over a distance of around 2-3m.

The video will give you all the information you need to create your own AM radio transmitter & receiver. During the next steps though I will present you some additional information.

Here you can find a parts list with example seller (affiliate links):

555 Timer: https://s.click.aliexpress.com/e/_dTrUY9D

Resistors: https://s.click.aliexpress.com/e/_dTPpXjt

Capacitors: https://s.click.aliexpress.com/e/_dU4FEsB

NE5532 OpAmp: https://s.click.aliexpress.com/e/_9JNpe3

Electret Mic: https://s.click.aliexpress.com/e/_AAJ0er

Perfboard: https://s.click.aliexpress.com/e/_AZXOgT

PCB Terminal: https://s.click.aliexpress.com/e/_dYbstfZ

XR2206 Function Generator: https://s.click.aliexpress.com/e/_Abhz51

TA7642 IC: https://s.click.aliexpress.com/e/_Adpjwb

100pF variable capacitor: https://s.click.aliexpress.com/e/_An8vVt

Enamelled copper wire: https://s.click.aliexpress.com/e/_9i1Heb

Here you can find the schematics for the circuits. Use them as a reference.

You did it! You just created your own AM radio transmitter and receiver!

Feel free to check out my YouTube channel for more awesome projects: http://www.youtube.com/user/greatscottlab

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