Posted on Thursday, August 25, 2011 • Category: FM Transmitters
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. 1KM Power FM Transmitter USB FM Transmitter MAX2606 Telephone FM Transmitter 150W FM Transmitter Amplifier BH1415F FM Stereo PLL Transmitter Veronica 1W FM Transmitter 5 Watt Transmitter Simple FM Radio Bug 2-5 Km Long Range FM Transmitter DIY Walkie Talkie
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