FM reciever with LM386


Posted on Nov 28, 2012

his coil is home-made. It is actually a single layer 'tapped' air core coil. Please refer to my special section on how to make the DRAIN Coil. Once it is made, the tapped leg goes into the middle hole (Refer to CHART I), but make sure you have the coil positioned so that the tapped leg is closest to the .001uF ceramic capacitor. You will have to bore-out the tapped hole on the PCB a little...in order for the tapped leg to fit. Then solder into place. Start with a two turn tap. If the unit responds well to this...you may want to increase the overall sensitivity of the unit by making a three turn tap. The tap is always closest to the .001uF ceramic disk capacitor.


FM reciever with LM386
Click here to download the full size of the above Circuit.

In this exciting project, not only will you have a very unique one transistor FM receiver, but also be in-store for making home-made air-core coils. And even more than that, when you finish 'your' project, your journey has just started. With your now-working FM receiver, you can start experimenting with many wonderful things that I had mentioned above. Once you have mastered all these things...you will surely have a better grasp on the whole concept of what 'hands on' experience truly is...not to mention you are doing all of this experimentation way up in the VHF (very high frequency) electro-magnetic spectrum. It is a very rewarding experience when you have gone into the unknown...taken roads that you have never taken before...roads that lead you to knowledge of things that you would have never thought possible...and all on your own!

Throughout this website, you will also find other nice projects. Some by me and some by my good friend...Pedro. We have put all these wonderful projects out to you in hopes that...just like fishing, if you have never experienced the joy of catching your first fish...you will never know what its' like. The same goes for these projects... we have all the 'bait' here for you to take...but it will be left up to you to grab it. Every so often I go and post my Radio Shack Special to as many radio/ham/electronic forums as I can..not to mention always...





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