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Long range fm transmitter circuit electronic project

This long range fm transmitter circuit electronic project is designed using common electronic parts and is capable to transmit signal up to 400 meters .
This long range fm transmitter circuit can be used to supervise a room or to design a wireless microphone . To listen the signal it can be used any Fm radio receiver.
Construction of this long range fm transmitter circuit is very simple requiring few components and is very easy to build.
L1 is 0.1uH, 6 to 8 turns of 22-gauge hookup wire close wound around a 1/4-inch diameter non-conductive core . C4 is an trimmer with 4-40pF.
To calibrate this fm transmitter circuit device we must set the radio receiver in the down side of FM scale and rotate C4 until we hear the signal from transmitter device.
The capacitors that are used in this fm transmitter circuit are ceramic type capacitors .
This transmitter circuit can be powered from a 9 volt battery or a simple 9 volt DC power supply .

Electronic Circuits: 
Circuit Diagram: 
Long range fm transmitter circuit diagram

Comments

Sir, I'm zahangir. And I'm a new electronic hobbyes. There is no detail about L1 in your circuit diagram. And what you mean my non- conductive core? Please tell me detail about non- conductive core. A lot of thanks for you.

L1 is 0.1uH, 6 to 8 turns of 22-gauge hookup wire close wound around a 1/4-inch diameter non-conductive core (plastic, cardboard, air)

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