Introduction: Build Your Own Crude FM Radio
In this project I will demonstrate how a RF FM transmitter works and how this principle compares to the older AM. I will also show you how to build a simple and crude FM receiver which can even sometimes let you listen to your favorite radio stations. Let's get started!
Step 1: Watch the Video!
The video gives you plenty of information about how FM and AM radio signal communication works and how the receiver circuit performs. I will present some additional information for the receiver in the following steps.
Step 2: Order Your Parts!
Here you can find a parts list with example sellers for your convenience (affiliate links).
Amazon.de:
1x LM386: http://amzn.to/1PkTgbX
1x 10kΩ, 1x 4.7kΩ Resistor: http://amzn.to/1A2KZzi
1x Variable Capacitor (1-30pF): http://amzn.to/1PkTwYi
2x BF199 Transistor: -
1x 25kΩ Potentiometer: http://amzn.to/1IrYFpR
2x 100nF Capacitor: http://amzn.to/1IrYXgf
1x 10µF, 1x 470µF Capacitor: http://amzn.to/1IrZ4Ze
Aliexpress:
1x LM386: https://s.click.aliexpress.com/e/_d7zbzub
1x 10kΩ, 1x 4.7kΩ Resistor: https://s.click.aliexpress.com/e/_dTPpXjt
1x Variable Capacitor (1-30pF): https://s.click.aliexpress.com/e/_dWVcswb
2x BF199 Transistor: https://s.click.aliexpress.com/e/_dYRkUBl
1x 25kΩ Potentiometer: https://s.click.aliexpress.com/e/_dTFyPv5
2x 100nF Capacitor: https://s.click.aliexpress.com/e/_dU4FEsB
1x 10µF, 1x 470µF Capacitor: https://s.click.aliexpress.com/e/_d7dOwRz
Ebay:
1x LM386: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x 10kΩ, 1x 4.7kΩ Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x Variable Capacitor (1-30pF): http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
2x BF199 Transistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x 25kΩ Potentiometer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
2x 100nF Capacitor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
1x 10µF, 1x 470µF Capacitor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...
Step 3: Build the Circuit!
Here you can find the schematic and two pictures of my finished FM Receiver. Use them as a reference to build your own.
Step 4: Success!
You did it. You just built your own crude FM Receiver and learned something about RF communication.
Feel free to check out my YouTube channel for more awesome projects:
http://www.youtube.com/user/greatscottlab
You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information: