2 Watts FM transmitter

  
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Inside Circuits
This is a nice 2 Watts FM transmitter. It has a Super-Sensitive pre-amplification with BC109 and BC177 with more than 100% signal modulation. The job finish the 2N2219 by Motorola. For the Coils you should use 1mm wire(enameled), L1= 3 turns - 10mm diameter, L2= 1 turn - 10mm diameter. R9 trimmer controls the modulation gain. The tunning is easy by controlling C9 trimmer (88-108 MHz). The RFC J should be the VK220J with ferrite (VK200 is not suitable).

2 Watts FM transmitter - img1

You will be amazed how well this little monster can transmit several kilometers excellent quality sound. Feed input from a simple cd player or PC (win amp) or just connect a microphone. Enjoy!




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nermin   May 17, 2008

Yes,another small transmitter.Nice but of course can not give 2W of output power.Anyone who have power meter can see that.According My previous works this thing could give some 100-300 mW,depending of many factors.But for beginners nice project for test.Good luck.

Manai   Apr 11, 2008

very very good FM transmitter,i will try to do it but i need the PCB circuit :)

Berek Jeams   Jan 9, 2008

remarkable!! Mine goes 3 km far! Just great

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