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.
PLL FM Transmitter using LMX1601, ATtiny2313 AT90S2313 1 Watt FM Amplifier The Simplest FM Transmitter Ever Made VHF/UHF TV Modulator BH1417 PLL Stereo FM Transmitter Module 500mW FM / VHF Transmitter Amplifier / Booster 1.5V Battery Operated Rebroadcast FM Transmitter 400mW VCO FM Transmitter 3V One Transistor FM Transmitter PLL FM TransmitterCircuit-Zone.com © 2007-2025. All Rights Reserved.
