miniature fm transmitter


Posted on Feb 9, 2013

This miniature transmitter is easy to construct and it`s transmissions can be picked up on any standard FM receiver. It has a range of up to 1/4 of a mile or more. It is great for room monitoring, baby listening, nature research, etc. L1 is 8 to 10 turns of 22 gauge hookup wire close wound around a non-conductive 1/4 inch diameter form, such as a pencil. C4 is a small, screw-adjustable, trimmer capacitor. Set your FM receiver for a clear, blank space in the lower end of the band. Then, with a non-conductive tool, adjust this capacitor for the clearest reception. A little experimenting and patience may be in order. Most of the parts` values are not critical, so you can try adjusting them to see what happens.


miniature fm transmitter
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

catalinbread super charged overdrive
roboat
simple 4 channel video amplifier
fire stick schematic diagram
Audio Distortion Meter Circuit with Diagram
PIR Motion Sensor
LED lights inside the refrigerator circuit diagram
And broadening the delay circuit



Top