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.
1.5 Watt FM Transmitter BH1417 Stereo PLL FM Transmitter 500mW PLL FM Transmitter 88-108MHz Solar Powered Long Range FM Transmitter PLL FM Exciter / Transmitter 6W FM Transmitter 88-108 MHz 0.1 - 3.5GHz Prescaler 1 Watt FM Amplifier Single Chip FM Transmitter BH1415F FM Stereo PLL Transmitter with LCDCircuit-Zone.com © 2007-2025. All Rights Reserved.
