FM Transmitter


Posted on Sep 30, 2012

Here is the schematic, PC board pattern, and parts placement for a low powered FM transmitter. The range of the transmitter when running at 9V is about 300 feet. Running it from 12V increases the range to about 400 feet. This transmitter should not be used as a room or telephone bug.


FM Transmitter
Click here to download the full size of the above Circuit.

# L1 and L2 are 5 turns of 28 AWG enamel coated magnet wire wound with a inside diameter of about 4mm. The inside of a ballpoint pen works well (the plastic tube that holds the ink). Remove the form after winding then install the coil on the circuit board




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

555 Low power Consumption Timer Circuit
make usb password generator for
A transformerless Tesla coil
Cosine wave Oscillator
Ohms Law
555 constitute an ultrasonic transmitter circuit diagram



Top