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.
SAA1057 PLL Synthesized FM Transmitter VHF FM Transmitter MAX2606 40 Watt FM Transmitter Amplifier Phone FM Transmitter Stereo FM Transmitter Using BA1404 1KM Power FM Transmitter BH1417 Stereo PLL FM Transmitter PLL FM Exciter / Transmitter 2W RF Amplifier For 24/23 CM Simple Stereo FM Transmitter Using An AVR MicrocontrollerCircuit-Zone.com © 2007-2026. All Rights Reserved.
